การชดเชยแสง

ด้วยเทคโนโลยีของการถ่ายภาพที่ทันสมัยขึ้น
การถ่ายภาพในสภาวะแสงปกติ แสงไม่แรงมาก
ถ่ายตามแสง มีพระอาทิตย์ส่องมาจากทางด้านหลัง

ก็สามารถปล่อยให้กล้องวัดแสง และทำการถ่ายภาพได้โดยปกติ

แต่เมื่อใดก็ตาม
ที่ถ่ายภาพในสภาพแสงสว่าง หรือ ถ่ายภาพมีสีขาวมาก
หรือ ถ่ายภาพในสภาพแสงที่มีเงามาก หรือถ่ายย้อนแสง
ระบบ การวัดแสงของกล้องจะทำให้ภาพที่ถ่ายได้.... มืดไป หรือ สว่างไป

ดังนั้นเราจะต้องทำการชดเชยแสง
โดยพิจารณา ว่า.....
"จะชดเชยแสง ให้มืดลง หรือ ชดเชยแสงให้สว่างขึ้น"
ตามลักษณะของภาพที่เราต้องการ







การวัดแสง เฉลี่ยทั้งภาพ กับ มาตรวัดแสง
เหมาะกับการถ่ายภาพโดยทั่วๆไป เช่นภาพวิวมุมกว้าง
และ โดยเฉพาะอย่างยิ่งการถ่ายภาพที่ มีแสงเงา ซับซ้อน
จนต้องมีการ ชดเชยแสง เพื่อปรับแต่งระบบถ่ายภาพของกล้อง





เมื่อถ่ายภาพโดยใช้มาตรฐานที่กล้องได้ถูกโปรแกรมเอาไว้ (วัดแสงเฉลี่ย)
แล้วภาพดูสว่างไป เราก็จำเป็นต้องถ่ายใหม่
และ ถ้าต้องการ บังคับให้กล้องถ่ายภาพให้ "มืดลง"กว่าเดิม
ในโหมด Manual เราจะต้อง ปรับแต่ง ชัดเตอร์สปีด และ รูรับแสง
จนมาตรวัดแสง แสดงค่าติดลบ
และถ้าเป็นการถ่ายด้วยโปรแกรม ถ่ายภาพในโหมดต่างๆ
ก็จะต้อง กดปุ่ม EV หรือ ปุ่ม +/- ให้เข็มมาตรวัดแสง
เลื่อน ลงไปทางด้านลบ ดังภาพ




มื่อถ่ายภาพโดยใช้มาตรฐานที่กล้องได้ถูกโปรแกรมเอาไว้ (วัดแสงเฉลี่ย)
แล้วภาพดู มืดไป เราก็จำเป็นต้องถ่ายใหม่
และ ถ้าต้องการ บังคับให้กล้องถ่ายภาพให้ "สว่างขึ้น"กว่าเดิม
ในโหมด Manual เราจะต้อง ปรับแต่ง ชัดเตอร์สปีด และ รูรับแสง
จนมาตรวัดแสง แสดงค่า เป็น "บวก"
และถ้าเป็นการถ่ายด้วยโปรแกรม ถ่ายภาพในโหมดต่างๆ
ก็จะต้อง กดปุ่ม EV หรือ ปุ่ม +/- ให้เข็มมาตรวัดแสง
เลื่อน ขึ้นไปทางด้าน บวก ดังภาพ





เมื่อไรจะชดเชยแสง.
(วัดแสงเฉลี่ยทั้งภาพ)
เมื่อเวลาที่ภาพ ที่เรามองเห็นด้วยตา "มีสีดำ" หรือ ค่อนข้างมี "เงาดำมืด"
(ปริมาณสีดำ หรือ เงาดำมีมากกว่าสีขาว 70/30%)
ถ้าคุณต้องการให้ภาพ ออกมา มีสีดำ
และ สามารถถ่ายทอดความมืดได้อย่างสมจริง
เราจำเป็นที่จะต้อง ชดเชยแสง ให้เป็น .ลบ .



เมื่อเวลาที่ภาพ ที่เรามองเห็นด้วยตา "มีสีขาว หรือ ค่อนข้างมี "แสงสว่างค่อนข้างมาก"
(ปริมาณสีขาว หรือ แสงสว่างมากกว่าเงาดำ 70/30%)
ถ้าคุณต้องการให้ภาพ ออกมา มีสีขาว หรือ สว่าง
และ สามารถ มองเห็นรายละเอียดภายในภาพได้ เหมือนกับที่ตาเห็น
เราจำเป็นที่จะต้อง ชดเชยแสง ให้เป็น .บวก .



*(แต่จะชดเชยแสงมากน้อยเท่าไร คุณจะต้องลอง
คำนวนด้วยสายตา หมั่นตรวจสอบ เสมอๆด้วยการดูภาพจากจอ) LCD
ถ้าการชดเชยแสงให้เป็นบวก แล้ว
ภาพยังดูไม่สว่าง หรือ สว่างจนซีด
ก็ควรที่จะพิจารณาใช้ แฟลช หรือ แผ่นสะท้อนแสง
มา ประกอบ กับการถ่ายภาพไปด้วย



ย้อน แสง ไฟ
หรือ แสงฟุ้ง เพราะหมอกแดด
ด้วยตาเปล่า เราอาจจะคิดว่า ภาพน่าจะ สว่างพอดี
ไม่จำเป็นที่จะต้องชดเชยแสง
แต่ที่จริงแล้ว แสงไฟ จากดวงไฟ หรือ ป้ายโฆษณา
ถึงแม้ว่าจะเป็นแสงอ่อนๆ มีบริเวณ ไม่มากนักภายในภาพ
บางครั้ง จะมีผล ต่อความสว่างของภาพ



โดยเฉพาะ แสงฟุ้งเพราะหมอกแดด
ถึงแม้ว่าจะถ่ายภาพตามแสง มีดวงอาทิตย์อยู่ทางด้านหลัง
แต่ก็ยังต้องทำให้ถ่ายภาพ
ด้วยการ ปรับชดเชยแสง ให้เป็นบวก
คือ จะต้องปรับกล้อง ให้ถ่ายภาพให้สว่างกว่าเดิม



การถ่ายภาพ ใบไม้สีเขียว วัตถุสีเขียว หรือ สีน้ำเงิน
ก็จะมีผล คล้ายๆ กับการถ่ายภาพสีดำ หรือ ภาพเงามืด
การที่จะทำให้ภาพ ใบไม้สีเขียว มีความสว่างภาพดี
จะต้องปรับมาตรวัด หรือ ปรับปุ่มชดเชยแสงให้เป็น ลบ

การถ่ายภาพในแสงในธรรมชาติ
อาจจะมีความต่างของแสง ไม่เท่ากัน
ถ้าถ่ายภาพที่ มีความต่างแสงน้อย (Low Contrast)
หรือถ่ายภาพที่มีแสงเงาไม่รุนแรงมาก
การชดเชยแสง คุณก็ไม่จำเป็นต้องไปซีเรียสกับมันให้มากนัก

ภาพที่มีแสงเงามาก (High contrast)
ภาพจะมีความน่าสนใจมาก แต่ การวัดแสง เพื่อการชดเชยแสง
ก็จะมีความยุ่งยากมากขึ้น

บทสรุปของการชดเชยแสง ก็คือ

การให้ความสำคัญระหว่าง
อัตราส่วน ของสีขาว และ สีดำ(แสงสว่าง และ เงาดำ)ภายในภาพ
การถ่ายภาพ ภายใต้สภาพแสงอ่อนและมีแสง เงา ที่ซับซ้อน
สิ่งที่จะต้องทำการพิจารณา เป็นอันดับแรกก็คือ …
ภายในภาพ มีสัดส่วนของเงาดำ และ แสงสว่าง ต่างกัน หรือ เท่ากัน อย่างไร

ทั้งนี้ ภาพที่สวยงาม
จะต้องอยู่ภายใต้เงื่อนไข ที่ว่า...
ปริมาณ แสง ต้องไม่แรงจัดจนเกินไป




อ้างอิง. http://www.rpst-digital.org/forum/showthread.php?t=16250&page=9&pp=15

Canon EOS 450D Detail

Canon EOS 450D

Infinite Possibilities.
For stunning photography with point-and-shoot ease, look no further than Canon's EOS Rebel XSi. The EOS Rebel XSi brings staggering technological innovation to the masses. It features Canon's EOS Integrated Cleaning System, Live View Function, a powerful DIGIC III Image Processor, plus a new 12.2-megapixel CMOS Sensor and is available in a kit with the new EF-S 18-55mm f/3.5-5.6 IS lens with Optical Image Stabilizer. The EOS Rebel XSi's refined, ergonomic design includes a new 3.0-inch LCD monitor, compatibility with SD and SDHC Memory cards and new accessories that enhance every aspect of the photographic experience.

.

Features

	Outstanding Image Quality: New Canon 12.2-megapixel CMOS sensor, DIGIC III Image Processor, 14-bit conversion for smooth tone, gradations, extensive noise reduction technology, and new Auto Optimization for superior highlight-shadow control.
	Excellent performance with 3.5 fps continuous shooting, up to 53 full-resolution JPEGs or 6 RAW images in a burst, and reduced shutter lag time.
	Large 3.0-inch LCD monitor, with 170° wide viewing angle, superior viewing in daylight, and Live View Function.
	Fast 9-point AF system, and two types of AF during Live View Function.
	Compatible with compact SD and SDHC memory cards.
	New advanced features include spot metering, external flash settings on the camera’s menu, and a new higher-magnification viewfinder.
	Fully compatible with over 60 EF/EF-S Lenses and a wide range of EOS System accessories.

New Technology for Outstanding Images. Outstanding Image Quality: New Canon 12.2-megapixel CMOS sensor, DIGIC III Image Processor, 14-bit conversion for smooth tone, gradations, extensive noise reduction technology, and new Auto Optimization for superior highlight-shadow control.

Canon’s CMOS (complementary metal oxide semiconductor) sensor captures images with exceptional clarity and tonal range, and offers the most pixels in its class. It offers many of the same new technologies to maximize each pixel’s light gathering efficiency that were first seen with the professional EOS-1D Mark III model. It’s an APS-C size sensor (22.2 x 14.8mm), and there’s an effective 1.6x increase in the lens’s marked focal length when attached. Canon’s DIGIC III Image Processor dramatically enhances image quality and speeds up all camera operations for intuitive operation. It works in concert with the EOS Rebel XSi’s sensor to achieve unprecedented levels of performance in all lighting situations. 12.2 Megapixel APS-C Size CMOS Sensor 14-bit A/D Converter With the EOS Rebel XSi, analog to digital signal conversion is executed by a 14-bit processor, which generates digital data with incredibly smooth tones. Formerly a feature only present in top-of-the-line pro digital SLR cameras, the 14-bit conversion gives incredibly smooth transitions from light to dark colors, with far less risk of "banding." A sky at sunset is a perfect example. With this rich 14-bit gradation the EOS Rebel XSi offers RAW images of the highest quality that can be processed with Canon’s Digital Photo Professional software. Even JPEG files, which are always finished at 8-bits per channel, use the full 14-bit conversion initially to generate the best possible color and tonal detail. Another huge benefit of the 14-bit conversion is the Highlight Tone Priority option, which allows critical shooters to increase the level of detail in bright areas of a scene up to one stop, without affecting overall exposure. Auto Optimization The EOS Rebel XSi’s Auto Optimization is yet another image-quality tool that comes to the rescue in tricky lighting conditions. It can actually lighten dark areas of a scene while ensuring that bright areas maintain tonal detail. It’s now available in all shooting modes, including P, Tv, Av, and Manual. DIGIC III Image Processor Developed to maximize performance between the capture and recording stages of digital photography, the EOS Rebel XSi’s latest-generation DIGIC III Image Processor works in concert with Canon’s CMOS sensor to achieve even higher levels of performance. The entire electronic system is totally redesigned, giving the camera its incredible combination of speed and image quality. Digital noise is significantly reduced in shadow areas, and color reproduction is superior. DIGIC III Image Processor

	Outstanding Image Quality: New Canon 12.2-megapixel CMOS sensor, DIGIC III Image Processor, 14-bit conversion for smooth tone, gradations, extensive noise reduction technology, and new Auto Optimization for superior highlight-shadow control.
	Excellent performance with 3.5 fps continuous shooting, up to 53 full-resolution JPEGs or 6 RAW images in a burst, and reduced shutter lag time.
	Large 3.0-inch LCD monitor, with 170° wide viewing angle, superior viewing in daylight, and Live View Function.
	Fast 9-point AF system, and two types of AF during Live View Function.
	Compatible with compact SD and SDHC memory cards.
	New advanced features include spot metering, external flash settings on the camera’s menu, and a new higher-magnification viewfinder.
	Fully compatible with over 60 EF/EF-S Lenses and a wide range of EOS System accessories.

Speedy, Precise Operation. Excellent performance with 3.5 fps continuous shooting, up to 53 full-resolution JPEGs or 6 RAW images in a burst, and reduced shutter lag time.

The EOS Rebel XSi operates with such effortless speed that operation is nothing short of intuitive. With instant startup times, speedy autofocus and minimal shutter lag, the EOS Rebel XSi is one of the fastest cameras available today. It can shoot up to 3.5 frames per second, in bursts of 53 JPEGs or 6 RAW files, so you’ll never, ever miss a shot.

	Outstanding Image Quality: New Canon 12.2-megapixel CMOS sensor, DIGIC III Image Processor, 14-bit conversion for smooth tone, gradations, extensive noise reduction technology, and new Auto Optimization for superior highlight-shadow control.
	Excellent performance with 3.5 fps continuous shooting, up to 53 full-resolution JPEGs or 6 RAW images in a burst, and reduced shutter lag time.
	Large 3.0-inch LCD monitor, with 170° wide viewing angle, superior viewing in daylight, and Live View Function.
	Fast 9-point AF system, and two types of AF during Live View Function.
	Compatible with compact SD and SDHC memory cards.
	New advanced features include spot metering, external flash settings on the camera’s menu, and a new higher-magnification viewfinder.
	Fully compatible with over 60 EF/EF-S Lenses and a wide range of EOS System accessories.

See the Image in Large LCD with Live View Function. Large 3.0-inch LCD monitor, with 170° wide viewing angle, superior viewing in daylight, and Live View Function.

The EOS Rebel XSi has a huge, bright 3.0-inch TFT LCD monitor with 230,000 pixels and a viewing angle of 170°. It’s perfect for Live View composition or viewing camera settings like AF, ISO, Metering, AF Point selection and flash options. And the maximum brightness of the EOS Rebel XSi LCD monitor is about 30% greater than its predecessor, which is a big benefit when you’re using the camera in bright sunlight. 3.0" LCD Monitor Live View Function Live View Function enables you to view your subjects directly on the huge 3.0-inch LCD monitor. It’s easy to magnify any part of the scene 5x or 10x for precise manual focus. And now, there are two ways to use Autofocus along with Live View Function in the EOS Rebel XSi. You can even choose a grid overlay, perfect for keeping straight lines in your subject straight in your pictures. In the studio, Live View Function can be used remotely via a computer through the EOS Rebel XSi’s USB connection.

Features

	Outstanding Image Quality: New Canon 12.2-megapixel CMOS sensor, DIGIC III Image Processor, 14-bit conversion for smooth tone, gradations, extensive noise reduction technology, and new Auto Optimization for superior highlight-shadow control.
	Excellent performance with 3.5 fps continuous shooting, up to 53 full-resolution JPEGs or 6 RAW images in a burst, and reduced shutter lag time.
	Large 3.0-inch LCD monitor, with 170° wide viewing angle, superior viewing in daylight, and Live View Function.
	Fast 9-point AF system, and two types of AF during Live View Function.
	Compatible with compact SD and SDHC memory cards.
	New advanced features include spot metering, external flash settings on the camera’s menu, and a new higher-magnification viewfinder.
	Fully compatible with over 60 EF/EF-S Lenses and a wide range of EOS System accessories.

Advanced, Adaptable AF. Fast 9-point AF system, and two types of AF during Live View Function.

The EOS Rebel XSi has a high-precision 9-point wide area AF sensor for fast, accurate focus even in dim lighting. It has a number of focus modes, including One-Shot AF, AI Focus AF, AI Servo AF and Manual. In Live View Function, the EOS Rebel XSi has two AF modes: Quick mode, which uses the camera’s standard 9-point AF system, and Live mode, which is a contrast-based AF system that reads the sharpness of subjects right from the imaging sensor, and can be overridden by pressing the AF mode selection button. A familiar feature in PowerShot cameras, Live mode AF uses similar technologies to achieve focus, while Quick mode is more appropriate for capturing action or for shooting in low light.

Features

	Outstanding Image Quality: New Canon 12.2-megapixel CMOS sensor, DIGIC III Image Processor, 14-bit conversion for smooth tone, gradations, extensive noise reduction technology, and new Auto Optimization for superior highlight-shadow control.
	Excellent performance with 3.5 fps continuous shooting, up to 53 full-resolution JPEGs or 6 RAW images in a burst, and reduced shutter lag time.
	Large 3.0-inch LCD monitor, with 170° wide viewing angle, superior viewing in daylight, and Live View Function.
	Fast 9-point AF system, and two types of AF during Live View Function.
	Compatible with compact SD and SDHC memory cards.
	New advanced features include spot metering, external flash settings on the camera’s menu, and a new higher-magnification viewfinder.
	Fully compatible with over 60 EF/EF-S Lenses and a wide range of EOS System accessories.

Flexible Storage with Memory Cards. Compatible with compact SD and SDHC memory cards.

The EOS Rebel XSi is the first EOS Digital SLR camera to use popular SD and SDHC memory cards only. Compact, inexpensive and available in increasingly large capacities, SD and SDHC memory cards are a perfect complement to the EOS Rebel XSi’s compact and lightweight body design.

	Outstanding Image Quality: New Canon 12.2-megapixel CMOS sensor, DIGIC III Image Processor, 14-bit conversion for smooth tone, gradations, extensive noise reduction technology, and new Auto Optimization for superior highlight-shadow control.
	Excellent performance with 3.5 fps continuous shooting, up to 53 full-resolution JPEGs or 6 RAW images in a burst, and reduced shutter lag time.
	Large 3.0-inch LCD monitor, with 170° wide viewing angle, superior viewing in daylight, and Live View Function.
	Fast 9-point AF system, and two types of AF during Live View Function.
	Compatible with compact SD and SDHC memory cards.
	New advanced features include spot metering, external flash settings on the camera’s menu, and a new higher-magnification viewfinder.
	Fully compatible with over 60 EF/EF-S Lenses and a wide range of EOS System accessories.

Advanced Features for Advanced Photography. New advanced features include spot metering, external flash settings on the camera’s menu, and a new higher-magnification viewfinder.

The EOS Rebel XSi’s 35-zone evaluative metering system with improved white balance analyzes light based on each zone in the viewing area, enabling the camera to choose the overall best exposure for the entire scene. It now features a spot meter, which reads a tiny area (about 4%) of the picture for extremely precise metering. It also provides Center-weighted average metering and partial metering for accurate exposure no matter the situation. The EOS Rebel XSi also has an improved, high magnification viewfinder that provides a larger overall view, and increased brightness and clarity. And the EOS Rebel XSi has a Display-Off sensor that automatically turns the LCD monitor off whenever the camera is at the photographer’s eye. All relevant shooting information, including ISO, is displayed right in the viewfinder so it’s easy to change settings without moving the camera away from the eye. EOS Integrated Cleaning System Photographers who must change lenses in dusty environments will find the advanced Canon EOS Integrated Cleaning System a tremendous time saver. Dust that settles on the sensor surface is removed using ultrasonic vibration. This Self Cleaning Sensor Unit routine is automatically activated whenever the camera is powered on or off. (It can also be manually activated.) A special collar positioned around the sensor collects the loosened dust. Dust particles can also be automatically removed via software. By shooting a plain white subject, the photographer can acquire dust position data that is transmitted along with the image (whether JPEG or RAW). Canon Digital Photo Professional (DPP) version 3.3 or later software can be used to manually or automatically erase the dust spots. It’s not one feature, it’s a built-in system to minimize the effect of dust in high-resolution digital images. Self Cleaning Sensor Unit Self Cleaning Sensor Unit A key element of minimizing dust is preventing it from clinging to the front surface of the imaging sensor. To combat against this, the EOS Rebel XSi features a Canon-designed Self Cleaning Sensor Unit. The low-pass filter at the front of the sensor shakes off dust automatically with ultrasonic vibrations, removing dust from the sensor assembly. The EOS Rebel XSi has a new coating on the front surface of the low-pass filter, to increase its resistance to dust sticking to the sensor. Self Cleaning Sensor Unit Construction Diagram Dust Delete Data Detection Dust that may still remain on the front of the sensor can also be erased with software included in Digital Photo Professional (DPP) Version 3.3 or later software. A simple test shot of a plain, white object can be taken, using a menu setting. This Dust Delete Data image is analyzed in-camera, and the location and size of any remaining dust is added to any subsequent pictures taken. This data is transmitted along with the image, whether JPEG or RAW, and can be either manually or automatically erased in Canon’s DPP version 3.3 and later software. This added software option ensures the cleanest possible image, perfect for printing or archiving. Picture Style settings With the EOS Rebel XSi’s Picture Style technology, photographers can change the look of their digital photographs. Color, saturation, sharpness and contrast settings create noticeable variation in the saved image. Changing a Picture Style setting is almost like a 35mm film user switching from one type of color film to another. In addition to six preset Picture Style settings, Canon offers additional downloadable "Picture Style Files", that can be installed into your camera for even more imaging options at your fingertips. Setting Description Saturation Sharpness Standard (default setting) Vivid, sharp images; usable in a wide variety of conditions; optimal for direct printing without post-processing high slightly high Portrait Warmer skin tones, with slight increases in contrast and sharpening. slightly high slightly low Landscape Extremely bright, saturated and sharpened images, with emphasis on blue and green color saturation. high green-blue high Neutral Low sharpening, contrast and saturation: the ideal starting point for image-editing in the computer. low none Faithful Accurate reproduction of the subject’s colors based on colorimetric data; assumes 5500K light source low none Monochrome Black & White images; adjustable contrast, sharpening, as well as color toning and effects of traditional color filters. none (monochrome) slightly high Highlight Tone Priority This vital Custom Function lets photographers get even better detail in bright highlights, even in contrasty lighting conditions. It’s beneficial for nearly any type of picture, from mid-day shots on a safari to portraits in sunlight, where a user may encounter bright highlight areas where he or she wants to preserve details. Finally, there’s no impact on the camera’s shooting speed or burst rate when Highlight Tone Priority is engaged. It takes full advantage of the EOS Rebel XSi’s new 14-bit per channel conversion, meaning there are 16,384 distinct colors from darkest to lightest in each color channel.

	Outstanding Image Quality: New Canon 12.2-megapixel CMOS sensor, DIGIC III Image Processor, 14-bit conversion for smooth tone, gradations, extensive noise reduction technology, and new Auto Optimization for superior highlight-shadow control.
	Excellent performance with 3.5 fps continuous shooting, up to 53 full-resolution JPEGs or 6 RAW images in a burst, and reduced shutter lag time.
	Large 3.0-inch LCD monitor, with 170° wide viewing angle, superior viewing in daylight, and Live View Function.
	Fast 9-point AF system, and two types of AF during Live View Function.
	Compatible with compact SD and SDHC memory cards.
	New advanced features include spot metering, external flash settings on the camera’s menu, and a new higher-magnification viewfinder.
	Fully compatible with over 60 EF/EF-S Lenses and a wide range of EOS System accessories.

Shooting and Sharing Made Easy. Fully compatible with over 60 EF/EF-S Lenses and a wide range of EOS System accessories.

EF & EF-S Lenses EOS Rebel XSi is compatible with all Canon lenses in the EF and EF-S lineup, ranging from ultra-wide angle to super telephoto lenses. Canon lenses employ advanced optical expertise and micron-precision engineering to deliver unprecedented performance in all facets of the photographic process. Special optical technologies, such as Aspherical, ultra-low dispersion, or fluorite elements are featured in the universally acclaimed L Series lenses, and Canon’s Optical Image Stabilizer technology are featured in select lenses to minimize the effect of camera shake. Through Canon lenses, photographers can truly maximize the quality and liberating performance of the EOS Rebel XSi. Flash Photography The EOS Rebel XSi features the acclaimed E-TTL II flash metering system. With any of the flashes in the EX Speedlite line, E-TTL II provides reliable flash output whether shooting fill-in flash pictures in sunlight, or using flash in total darkness. With E-TTL II, the exact same 35-zone metering sensor used for measuring ambient light is also used for flash metering – giving even finer metering command of the image area. If you prefer a broader area for flash metering, there’s a menu setting to change to "Average" flash metering—where the entire 35-zone area is measured evenly for flash exposure. The Canon Speedlite 430EX is the ideal step-up accessory for powerful flash shooting with the EOS Rebel XSi. It has excellent flash power (maximum guide number of 141 ft./43m at ISO 100), and is the perfect way to get great flash pictures when you can’t get right up to the subject. The 430EX is also great for bounce flash, with its tilting and swiveling flash head. It automatically zooms the flash head to cover lenses ranging from 16mm up to 105mm or longer with the EOS Rebel XSi. Of course, it works with the camera to provide full E-TTL II automatic flash exposure. And the 430EX has a powerful AF-assist beam, which allows the camera to autofocus even in total darkness on subjects as far as 32 ft. from the camera. Speedlite 430EX Software Canon EOS Digital Solution Disk (Version 17.0) The EOS Rebel XSi comes bundled with an updated Canon EOS Digital Solution Disk, which features powerful software programs designed to extend the EOS experience to the computer. These include Canon’s ZoomBrowser EX for Windows® (Version 6.1), ImageBrowser for Macintosh® OS X (Version 6.1), Digital Photo Professional (Version 3.3), the totally new Picture Style Editor (Version 1.0), Canon’s EOS Utility (Version 2.2), RAW Image Task (Version 2.8), PhotoStitch, and PTP TWAIN Driver. Each application is designed to perfect the captured images and streamline the digital workflow. ZoomBrowser EX v.6.1 and Digital Photo Professional v.3.3 for Windows are compatible with the new Windows Vista operating system. Digital Photo Professional (Version 3.3) is an image processing program that enables high-speed RAW image processing, high-speed previewing for real-time image adjustment and support for sRGB, Adobe RGB and Wide Gamut RGB color spaces. Because it’s CMS (Color Management System) compatible, Digital Photo Professional allows for easy image layout and printing in Adobe RGB in conjunction with Easy-PhotoPrint and PictBridge printers. It also features the Dust Delete Data Detection tool for cleaner images. EOS Utility (Version 2.3) for Macintosh or Windows handles the connection between the camera and computer, whenever they’re connected via USB. It allows remote controlled shooting from the computer, handles downloading of images from the camera to the computer, and allows seamless linking to either Canon’s ZoomBrowser/ImageBrowser or Digital Photo Professional software once images have been copied to the hard drive. Furthermore, it’s used to upload settings back into a USB-connected camera. ZoomBrowser EX (Version 6.1) for Windows and ImageBrowser (Version 6.1) for Mac OS X are the easy, user-friendly options for viewing and editing of JPEG and even RAW image files. Both allow viewing of numerous types of images including finished TIFF and BMP files. Both also have a variety of search options for finding images, allow re-naming of single images or batches of files, and offer a variety of options for printing without using a separate image-editing program. RAW Image Task (Version 2.8) for Windows/Macintosh This software is an integrated component of ZoomBrowser EX (Windows) or ImageBrowser (Mac). It allows processing of RAW images from EOS cameras, including the new EOS Rebel XSi, with a variety of adjustment possibilities. These options, as well as the overall color, contrast and "look" of RAW Image Task, closely mimic the characteristics of Canon’s in-camera JPEG processing.

Specifications

Type
Type	Digital, single-lens reflex, AF/AE camera with built-in flash
Recording Medium	SD memory card, SDHC memory card
Image Format	22.2mm x 14.8mm
Compatible Lenses	Canon EF lenses (including EF-S lenses) (35mm-equivalent focal length is approx.1.6x the lens focal length)
Lens Mount	Canon EF mount

Image Sensor
Type	High-sensitivity, high-resolution, large single-plate CMOS sensor
Pixels	Effective pixels: Approx. 12.20 megapixels
Total Pixels	Total pixels: Approx. 12.40 megapixels
Aspect Ratio	3:2 (Horizontal : Vertical)
Color Filter System	RGB primary color filter
Low-pass Filter	Located in front of the image sensor, non-removable

Recording System
Recording Format	Design rule for Camera File System 2.0
Image Format	JPEG, RAW (14-bit Canon original) RAW+JPEG
File Size	(1) Large/Fine : Approx. 4.3MB (4272 x 2848 pixels) (2) Large/Normal : Approx. 2.2MB (4272 x 2848 pixels) (3) Medium/Fine : Approx. 2.5MB (3088 x 2056 pixels) (4) Medium/Normal: Approx. 1.3MB (3088 x 2056 pixels) (5) Small/Fine : Approx. 1.6MB (2256 x 1504 pixels) (6) Small/Normal : Approx. 0.8MB (2256 x 1504 pixels) (7) RAW : Approx. 15.3 MB (4272 x 2848 pixels) Exact file sizes depend on the subject, ISO speed, Picture Style, etc.

White Balance
Settings	Auto, Daylight, Shade, Cloudy, Tungsten, White Fluorescent Light, Flash, Custom
Color Temperature Compensation	White balance correction: ±9 stops in full-stop increments White balance bracketing: ±3 stops in full-stop increments Blue/amber direction or magenta/green direction possible

Viewfinder
Type	Eye-level pentamirror
Coverage	Vertical/Horizontal approx. 95%
Magnification	Approx. 0.87x (-1m with 50mm lens at infinity)
Eyepoint	Approx. 19mm (from eyepiece lens center)
Dioptric Adjustment Correction	-3.0 to +1.0 diopter
Mirror	Quick-return half mirror (Transmission: reflection ratio of 40:60, no mirror cut-off with EF600mm f/4L IS USM or shorter lenses)
Viewfinder Information	AF information (AF points, focus confirmation light), exposure information (shutter speed, aperture, AE lock, exposure level, ISO speed, exposure warning), flash information (flash ready, high-speed sync, FE lock, flash exposure compensation), monochrome shooting, white balance correction, maximum burst, SD memory card information
Depth-of-Field Preview	Enabled with depth-of-field preview button

Autofocus
Type	TTL secondary image-registration, phase detection
AF Points	9 AF points
AF Working Range	EV -0.5-18 (at 73°F/23°C, ISO 100)
Focusing Modes	One-Shot AF, AI Servo AF, AI Focus AF, Manual focusing (MF)
AF Point Selection	Automatic selection, manual selection
Selected AF Point Display	Superimposed in viewfinder and indicated on LCD monitor
AF-assist Beam	Small series of flashes fired by built-in flash Effective range: Approx. 4.0m/13.1 ft. at center, approx. 3.5m/11.5 ft. at periphery

Exposure Control
Metering Modes	35-zone TTL full-aperture metering Evaluative metering (linkable to any AF point) Partial metering (approx. 9% of viewfinder at center) Spot metering (approx. 4% of viewfinder at center) Center-weighted average metering
Metering Range	EV 1-20 (at 73°F/23°C with EF50mm f/1.4 USM lens, ISO 100)
Exposure Control Systems	Program AE (Full Auto, Portrait, Landscape, Close-up, Sports, Night Portrait, Flash Off, Program), shutter-priority AE, aperture-priority AE, depth-of-field AE, manual exposure, E-TTL II autoflash
ISO Speed Range	Basic Zone modes: ISO 100-800 set automatically Creative Zone modes: ISO 100-1600 (in 1-stop increments), Auto
Exposure Compensation	Manual: ±2 stops in 1/3- or 1/2-stop increments (can be combined with AEB) AEB: ±2 stops in 1/3- or 1/2-stop increments
AE Lock	Automatic: When focus achieved with evaluative metering and One-Shot AF Manual: By AE lock button

Shutter
Type	Electronically-controlled, focal-plane shutter
Shutter Speeds	1/4000 sec. to 1/60 sec., X-sync at 1/200 sec. 1/4000 sec. to 30 sec., bulb (Total shutter speed range. Available range varies by shooting mode.)
Shutter Release	Soft-touch electromagnetic release
Self-timer	10-sec. or 2-sec. delay or 10-sec. delay plus continuous shooting
Remote Control	Remote Switch RS-60E3 Remote Controller RC-1/RC-5

Built-in Flash
Type	Retractable, auto pop-up flash
Guide Number	13/43 (ISO 100, in meters/feet)
Recycling Time	Approx. 3 sec.
Flash-ready Indicator	Flash-ready icon lights in viewfinder
Flash Coverage	17mm lens angle of view
Flash Exposure Compensation	±2 stops in 1/3- or 1/2-stop increments

External Speedlite
EOS External Flash or Dedicated Speedlites	E-TTL II autoflash with EX Series Speedlites
PC Terminal	N/A

Drive System
Continuous Shooting Speed	Max. approx. 3.5 shots/sec. (single shots possible)
Max. Burst During Continuous Shooting	JPEG (Large/Fine): Approx. 53, RAW: Approx. 6 RAW+JPEG (Large/Fine): Approx. 4 Based on Canon's testing standards with a 2GB SD memory card, ISO 100, and Standard Picture Style Varies depending on the subject, SD memory card brand, image-recording quality, etc.

LCD Monitor
Type	TFT color liquid-crystal monitor
Screen Monitor size	3.0 in.
Pixels	Approx. 230,000 pixels
Coverage	Approx. 100%
Brightness Control	7 levels provided

Playback
Image Display Format	Single image, Single image + Image-recording quality, shooting information, histogram, 4- or 9-image index, magnified view (approx. 1.5x-10x), rotated image, image jump (by 1/10/100 images, or shooting date)
Highlight Alert	Provided (Overexposed highlights blink)

Image Protection and Erase
Protection	Single images can be erase-protected or not
Erase	Single image, check-marked images, or all images in the card can be erased (except protected images) at one time
Direct Printing from the Camera	Enabled with the Print/Share button
Compatible Printers	PictBridge-compatible printers

Power Source
Battery	Battery Pack LP-E5 (Quantity 1) AC power can be supplied via AC Adapter Kit ACK-E5 With Battery Grip BG-E5, size-AA batteries can be used
Number of Shots	Temperature Shooting Conditions No flash 50% flash use At 73° F/23° C approx. 600 approx. 500 At 32° F/0° C approx. 500 approx.400
Battery Life	The above figures apply with a fully-charged Battery Pack LP-E5 The figures above are based on CIPA (Camera & Imaging Products Association) testing standards
Battery Check	Automatic
Power Saving	Provided. Power turns off after 30 sec., 1, 2, 4, 8, or 15 min.
Back-up Battery	Built-in secondary battery

Dimensions and Weight
Dimensions (W x H x D)	Approx. 5.1 x 3.8 x 2.4 in./128.8 x 97.5 x 61.9mm
Weight	Approx. 16.8 oz./ 475g (body only)

Operating Environment
Operating Temperature Range	32-104°F/0-40°C
Operating Humidity Range	85% or less

Working Conditions
Working Temperature Range	32-104°F/0-40°C
Working Humidity Range	85% or less

Note: The camera's specifications and physical appearance are subject to change without notice.