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cgf

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Canon 40D
« on: August 19, 2007, 08:30:21 am »

For those waiting to see the next Canon dSLR, Amazon is listing the 40D + lens for US$1500 with a September 20 release date.

Link: Canon 40D

6.5 fps, self-cleaning sensor, 10.1 megapixels, 3" lcd (etc)...

The specs include a reference to ethernet connection ???
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DarkPenguin

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Canon 40D
« Reply #1 on: August 19, 2007, 10:56:26 am »

tsiphoto (the definitive canon source) over at DPreview referred to it as a 1dmkiii lite.  Here is hoping for better af.

Oh, if this line is correct ....

Number of AF points: Nine, all cross-type AF points

then it would be better AF.
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Rhossydd

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Canon 40D
« Reply #2 on: August 19, 2007, 11:54:29 am »

They're also listing the EOS 1Ds mkIII

http://www.amazon.com/Canon-1Ds-Mark-III-D.../dp/B000V5LX00/

The page is changing already as earlier today it was stating availability for 10th December 2007, which has now disappeared.
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ARD

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Canon 40D
« Reply #3 on: August 19, 2007, 12:07:50 pm »

Quote
They're also listing the EOS 1Ds mkIII

http://www.amazon.com/Canon-1Ds-Mark-III-D.../dp/B000V5LX00/

The page is changing already as earlier today it was stating availability for 10th December 2007, which has now disappeared.
[{POST_SNAPBACK}][/a]

Canon EOS 1Ds Mark III 21.1MP Digital SLR Camera (Body Only)
                                                                                                                       
Technical Details
21.1-megapixel full-frame CMOS sensor
Large 3.0-inch LCD display with Live View and seven brightness settings
5 fps at shutter speeds 1/500 second or faster (for bursts of up to 45 Large/Fine JPEGs or 15 RAW images)
sRAW mode; 35-zone metering system; 45-point AF; integrated Self-Cleaning Sensor Unit
Powered by LP-E4 lithium-ion battery pack; stores images on CF, SD, or some SDHC memory cards
›  See more technical details

--------------------------------------------------------------------------------
Product Details

Shipping Weight: 6 pounds
Shipping: Currently, item can be shipped only within the U.S.
ASIN: B000V5LX00
Item model number: 1Ds Mark III

--------------------------------------------------------------------------------

Product Description

From the Manufacturer

The new 21.1-megapixel, full-frame Canon EOS-1Ds Mark III digital SLR camera brings the power of Canon's professional imaging excellence and innovation into sharper focus than ever before. While Canon's EOS-1D series has dominated the 35mm-based professional Digital SLR market for the past six years, the new EOS-1Ds Mark III digital SLR takes Canon's pro-digital prowess into and the realm of high-fashion and commercial photo studios where bulkier, medium-format cameras previously reigned.

The Canon EOS-1Ds Mark III's compact, lighter-weight magnesium alloy body is rugged and versatile enough to take out of the studio and into the field. The camera's fast, five-frame-per-second (fps) shooting rate for bursts of up to 56 Large/Fine (21-megapixel) JPEGS or 12 RAW images is unmatched in its class, making it the ideal instrument for capturing the fluid motion and free-flowing lines of location-based fashion photography as well as a wide range of other professional photographic applications.

Revolutionary Resolution
Developed and manufactured by Canon specifically for the EOS-1Ds Mark III digital SLR, the camera's new full-size 36 x 24-millimeter CMOS image sensor offers the highest resolution in its class and is comprised of approximately 21.1 million effective pixels (5632 x 3750) set at a pitch of 6.4 microns. The user can select any one of six recording formats ranging from 21.0 megapixels in Large JPEG or RAW format, 16.6 or 11.0 megapixels in the two medium JPEG sizes, or 5.2 megapixels in the small JPEG or "sRAW" formats. In any JPEG format, the user can set one of ten compression rates for each image size. In sRAW mode, the number of pixels is reduced to one-fourth that of a standard RAW image and the file size is cut in half, while retaining all of the flexibility and creative possibilities associated with full-size, traditional RAW images.

Dual "DIGIC III" Image Processors
Fulfilling the ultra-low noise, ultra-high image quality promise of the EOS-1Ds Mark III Digital SLR camera requires handling the enormous signal processing requirements of the camera's 21-megapixel resolution and top continuous shooting speed of five fps. To accomplish this, Canon has incorporated two identical DIGIC III imaging engines into the camera for parallel (and hence, faster) signal processing. The CMOS sensor reads out to the dual "DIGIC III" processors simultaneously in eight channels. DIGIC III is the next generation of Canon's proprietary image processing engine. This technology ensures the fine details and natural colors of images are optimally recorded and, as an added bonus, is responsible for the EOS-1Ds Mark III SLR's high-speed performance, faster signal processing, and more efficient energy consumption.
Adding to the improved virtuosity of the images captured by the EOS-1Ds Mark III Digital SLR camera is the camera's 14-bit Analog-to-Digital (A/D) conversion process. Able to recognize 16,384 colors per channel (four times the number of colors recognized by the EOS-1Ds Mark II Digital SLR camera's 12-bit conversion capability), this line-leading model is able to produce images with finer and more accurate gradations of tones and colors. Additionally, given the significantly larger image file sizes created by the EOS-1Ds Mark III Digital SLR camera, Canon has provided compatibility with the new Ultra Direct Memory Access (UDMA) compact flash memory card specification, which enables ultra-high-speed data transfer to the card. Utilizing a UDMA compliant card doubles the data transfer speed compared to a conventional memory card, putting the new EOS-1Ds Mark III on par with the 10.1-megapixel EOS-1D Mark III camera, even though the pixel count of this new model is more than twice as large.

Advanced Autofocus Technology
The EOS-1Ds Mark III autofocus system--first introduced earlier in 2007 on the EOS-1D Mark III Digital SLR--has 45 AF points including 19 high-precision cross-type points and 26 Assist AF points. This new array allows the 19 cross-type points to be divided into groups of nine inner and nine outer focusing points plus a center point, which makes picking an individual focusing point much faster and easier than going through all 45. During manual AF point selection, the AF point area is expandable in two stages via Custom Function control.
At the request of sports and wildlife photographers, a new micro-adjustment feature allows for very fine changes in the AF point of focus for each lens type in use, along with the addition of adjustable focus-tracking sensitivity as another sophisticated new AF feature. Other new components in the AF system include the reconfigured concave submirror and the secondary image formation lens, both products of Canon's vast expertise in optical engineering. Finally, the low-light sensitivity of the new AF sensor has been doubled to EV-1 for superior performance compared with earlier EOS Digital SLRs.

Live View
One of the dynamic innovations incorporated into new EOS Digital SLRs--and optimized for professional shooters on the EOS-1Ds Mark III digital SLR--is Canon's Live View shooting mode, which provides photographers with an expanded and exceedingly convenient set of shooting options beyond the conventional SLR through-the-lens viewing. Framing and shooting subjects using the camera's LCD screen affords the shooter the same 100 percent field of view provided by the optical viewfinder--this is a full-frame Digital SLR after all--but Live View has the added advantage of allowing the image to be more easily composed on the camera's bright and brilliant 230,000-pixel, three-inch LED screen. Additionally, the LCD-viewed image can be magnified by five or ten times in order to ensure that the shot is optimally focused.
Live View is at its best during tripod shooting, particularly for close-up photography where precise focusing is imperative. As a side benefit, the Live View shooting mode helps to reduce vibration by lifting the reflex mirror out of the optical path well in advance of the exposure, improving image quality at slow shutter speeds. Additionally, as the release time lag is miniscule, even instantaneous movements like a bird taking flight can be readily captured. The shutter charge sound can be delayed and made quieter than normal in Live View mode to avoid spooking wildlife or disturbing people nearby with unwanted camera sounds.

If a user is going to be several feet away from the camera, such as in some studio settings, the EOS-1Ds Mark III can be connected by cable to a computer via its USB 2.0 High-Speed interface. The camera can also be operated remotely at distances up to 492 feet with the assistance of the optional Wireless File Transmitter WFT-E2A, which allows users to view images directly off the camera's sensor in virtually real time, with the ability to adjust many camera settings quickly and easily.

Viewing Display
Easy to read, even in outdoor conditions such as bright sunlight, the EOS-1Ds Mark III Digital SLR camera features a three-inch, 230,000-pixel wide-angle LCD display screen. The TFT color liquid-crystal monitor features seven user-settable brightness levels and a wide, 140-degree viewing angle, both horizontally and vertically. An added advantage of the large, three-inch display size is the ability to utilize a larger font size for text, making it easier to read setting and menu options on the screen.
Canon extends its "ease-of-reading" policy to the EOS-1Ds Mark III's viewfinder as well. Bright and clear with zero distortion, a 100 percent picture coverage, and a magnification factor of .75x, it is the finest viewfinder ever placed in an EOS camera.

EOS Integrated Cleaning System
Another first for a professional digital SLR of this caliber is Canon's complete dust management solution, called the EOS Integrated Cleaning System. The new CMOS image sensor is designed with a lightweight infrared absorption glass cover that vibrates for 3.5 seconds when the camera is turned on or off. This brief delay can be cancelled immediately upon start-up by pressing the shutter button half way. Dust that has been shaken or blown loose of the sensor is trapped by adhesive surfaces surrounding the sensor unit housing, preventing the problematic particles from reattaching themselves to the filter when the camera moves.
Like its sibling, the EOS-1D Mark III, the shutter of the EOS-1Ds Mark III Digital SLR camera carries a durability rating of 300,000 cycles and, though it generates less dust, still charges itself three times during the manual cleaning process so that dust is shaken off the shutter curtains as well. This cleaning system uses very little battery power and can be turned off in the custom function menu.

The second part of the dust management system is a software solution that maps the location of any spots that may remain on the sensor. The mapped information is saved as Dust Delete Data and attached to the image file. Subsequently, the offending dust information is subtracted from the final image during post processing, using the supplied Digital Photo Professional software.

Rock Solid Reliability
The entire body of the EOS-1Ds Mark III, including its internal chassis and mirror box, is made of an advanced magnesium alloy for exceptional strength and rigidity. Comprehensive weatherproofing at 76 locations on the camera body ensures superior reliability, even when shooting in harsh environments. Together with the 300,000-cycle shutter durability rating, these features result in a camera that, even though it is six ounces lighter than the EOS-1Ds Mark II, can truly withstand even the most severe shooting conditions.

Improved Software
Among the most valuable features of the EOS-1Ds Mark III Digital SLR is its compatibility with Canon's new Picture Style Editor 1.0 software. With PSE, photographers can personalize the look of their photographs by inputting their own preferred image processing parameters, including custom tone curves. The EOS-1Ds Mark III Digital SLR also ships with the latest versions of Canon's powerful software applications, including Digital Photo Professional 3.2 and EOS Utility 2.2, which support the camera's Remote Live View and Dust Delete Data functions, as well as incorporating a broad range of additional improvements designed to improve image quality and speed up workflow. Particularly noteworthy in DPP 3.2 is a new Lens Aberration Correction Function that corrects various image defects such as chromatic aberration, color blur, vignetting, and distortion. Initially, the Lens Aberration Correction Function will support images captured by the EOS-1Ds Mark III and 11 other EOS Digital SLRs using any of 29 individual EF and EF-S lenses. Also included are ZoomBrowser EX 6.0 and ImageBrowser 6.0 for easy browsing, viewing, printing, and archiving with compatible computer operating systems, including Microsoft Windows Vista and Windows XP, as well as Mac OS X.



[a href=\"http://www.amazon.com/Canon-1Ds-Mark-III-Digital/dp/B000V5LX00/ref=sr_1_6/103-6632904-9598204?ie=UTF8&s=photo&qid=1187517273&sr=1-6]Canon EOS 1D MKII Amazon Link[/url]
« Last Edit: August 19, 2007, 12:14:01 pm by ARD »
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feppe

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Canon 40D
« Reply #4 on: August 19, 2007, 12:26:21 pm »

The 1Ds MkIII sounds too good to be true. The thing is, it also looks light years ahead of anything Nikon has to offer - and competition would be good for consumers.

dickg

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Canon 40D
« Reply #5 on: August 19, 2007, 02:13:39 pm »

40D:

Product Features
10.1-megapixel CMOS sensor captures enough detail for photo-quality poster-size prints
Large 3.0-inch LCD display with enhanced Live View and broadened color gamut
6.5 frame-per-second continuous shooting capability (for bursts of up to 75 Large/Fine JPEGs or 17 RAW images)
sRAW mode; 35-zone metering system; integrated Self-Cleaning Sensor Unit
Powered by BP-511A, BP-511, or BP-512 lithium-ion battery pack; stores images on CF cards
Technical Details


Resolution: Approximately 10.1 million effective pixels (total pixels: approximately 10.5 million)
Recording pixels: 3888 x 2592
Sensor type: CMOS sensor, with primary R-G-B filtration
Sensor size: 22.2 x 14.8 millimeters
Pixel size: 5.7 microns square
Lens focal length factor: 1.6x
Sensor dust removal: EOS Integrated Cleaning System; active removal of dust by vibrating front low-pass filter; automatic removal of dust spots, in Canon Digital Photo Professional software (v. 3.1 or higher)
Maximum frames per second: 6.5 frames per second (fps) at full resolution
Maximum number of frames / burst: JPEG: 75; RAW: 17
Shutter speeds: 30 seconds to 1/8000, plus Bulb (1/3 or 1/2-step increments)
Flash sync speed: Up to 1/250, with EX-series Speedlites
Anticipated shutter durability: 100,000 exposures, based on Canon test methods
Computer interface: USB 2.0 (Hi-speed)
Image recording storage media: CompactFlash (CF) cards (type I or II, including Microdrives)
Card compatibility: "FAT32" compatible--OK for cards over 2GB
Image format options: JPEG (choice of "Fine" or "Normal" compression); RAW (Canon .CR2 RAW file format); RAW + JPEG (any JPEG file size available; JPEG file written as separate file)
Analog to digital conversion: 14 bits per channel (16,382 separate tones from brightest to darkest, for each channel)
Resolution options: "Large"--3888 x 2592 (approximately 10.1 million pixels); "Medium"--2816 x 1880 (approximately 5.3 million pixels); "Small"--1936 x 1288 (approximately 2.5 million pixels)
File numbering: sRGB color space: IMG_0001.JPG or IMG_0001.CR2; Adobe 1998 RGB color space: first character is always underscore (_)
Folders: Automatically created for image storage; new folder can be user-created with "Manual Reset" function; folders cannot be freely selected on memory card by the photographer
Highlight tone priority: Expands tonal range of bright highlights by about one stop; ISO range limited to 200 to 1600; activated by C.Fn II-3-1
Data verification: "Original Image Data" can be appended to each image via Custom Function IV-6-1; requires optional Canon Original Data Security Kit OSK-E3 to check authenticity
Live View viewing options: Camera's LCD monitor; computer monitor, via USB; computer monitor, via wireless transmitter WFT-E3A
Manual focus: Viewed on LCD monitor, with option to magnify focus area 5x or 10x
Autofocus: Possible--C.Fn III-6-1 active, press AF On button; mirror drops down temporarily while AF On button is pressed, allowing AF to function
Silent mode Live View shoot: Mode 1: First shutter curtain remains open; shooting up to 6.5 fps possible; Mode 2: Quieter option; 2nd shutter curtain doesn't close until user's finger is taken off shutter button
Accessory wireless transmitter: Canon WFT-E3A (optional, dedicated wireless transmitter)
Attachment to camera: Attaches to base of camera; totally integrated with EOS 40D's design
Wireless transfer methods: 802.11b or 802.11g; link speed: approximately 11 megabits/second (802.11b) or 54 megabits/second (802.11g)
Connection method: Infrastructure or Ad Hoc (802.11g functions in Ad Hoc mode)
Maximum wireless distance: Approximately 490 feet (150 meters), if "receiver" has its own antenna (depends on environment)
Wireless channels: 11 (in North American market)
Ethernet (wired) transfer: Yes; Ethernet 100Base-TX (maximum distance approximately 1,000 feet); link speed: approximately 100 megabits/second
Transfer options: 1. FTP mode (images sent to folder on host computer); 2. PTP mode (remote control of camera possible from computer); 3. HTTP mode (view camera's files using web browser; remote firing of camera possible)
Security options: Encryption: WEP or TKIP/AES; authentication: open system, WPA-PSK, or WPA2-PSK
USB "host" capability: Plug compatible USB devices into WFT-E2A, for use with the EOS 40D; GPS devices (write GPS time, coordinates, and altitude info into each file's EXIF info); external hard drive (connect compact external USB hard drive, and write files directly from camera to the hard drive as if it's an additional memory card)
LCD monitor: 3.0-inch (diagonal) TFT color; approximately 100% coverage; approximately 230,000 pixels on monitor; approximately 140 degrees viewing angle
LCD monitor brightness: Adjustable in 7 levels (via Menu)
Video-out: Yes (to standard TV monitor); NTSC or PAL, selectable on Menu
Number of AF points: Nine, all cross-type AF points
Center AF point: Unique hybrid cross-type AF point; world's first high-precision AF point with both horizontal and vertical high-precision; additional standard precision, cross-type sensors for lenses from f2.8 to f5.6
AF point selection: 1. Manual AF point selection via 9-way multi-controller on back of camera; 2. automatic AF point selection
AF activation: Shutter button, or new AF On button at back of camera
AF modes: One-Shot AF (for stationary subjects); AI Servo AF (for tracking moving subjects); AI Focus AF (auto selection of One-Shot or AI Servo AF)
AF sensor: Entirely new Canon CMOS AF sensor
AF sensitivity range: EV -0.5 to 18 (at 73 degrees F / 23 degrees C, ISO 100)
Shutter speeds: 30 seconds to 1/8000 second, plus Bulb (1/3 or 1/2-step increments); x-sync at 1/250
ISO range: 100 to 1600, in 1/3-step or full-stop increments; ISO can be expanded to 3200 via C.Fn I-3-1
Auto ISO: Can be set in any exposure mode, including P, Tv, Av, and M; ISO usually based at 400; typical auto range is 100 to 800, depending on conditions; manual exposure mode: auto ISO fixed at 400
Exposure modes: Manual, Aperture-priority (Av), Shutter-priority (Tv), Program AE
Full-auto modes: Green Zone, Portrait, Landscape, Close-up, Action, Night Portrait, Flash Off
Metering: 35-zone metering sensor; Evaluative metering (linked to all AF points); Center-weighted metering; Partial metering; Spot metering at center of picture (approximately 3.5% of picture area)
Metering range: EV 0 to 20 (all patterns, at normal temperatures)
Exposure compensation: Possible in P, Tv, Av, and A-DEP exposure modes; +/- up to two stops, in 1/2 or 1/3-stop increments (via Quick Control Dial)
Autoexposure bracketing: Possible in P, Tv, Av, M, and A-DEP exposure modes; +/- up to two stops, in 1/2 or 1/3-stop increments
Compatible flashes: All Canon EX-series Speedlites, including new Speedlite 580EX II
Camera menu sets flash: Yes (580EX II only, as of August 2007)
E-TTL II flash metering: Flash metering not linked to active AF point; distance from compatible EF lenses now used; entire metering area can be averaged using Custom Function 14-1
Modeling flash: 1-second burst of flash possible at 70Hz when depth-of-field preview button is pressed (580EX/EX II, 550EX, 420EX, MR-14EX, MT-24EX, and Speedlite transmitter only)
Wireless E-TTL: Fully compatible, including ratio setting over six-stop range
Flash exposure compensation: Up to +/- 2 stops can be set on camera body (can also be set on compatible Speedlites)
Built-in flash: Covers lenses as wide as 17mm (27mm equivalent); Guide Number 43 (feet)/13 (meters), ISO 100
Viewfinder focus screen: New interchangeable "Ef" series focusing screens; standard screen: Ef-A--precision matte screen very similar to EOS 30D; optional Ef-D screen--precision matte with grid lines; optional Ef-S screen--Super precision matte (superior manual focusing with fast lenses, f1.8 to f2.8)
Viewfinder display: Similar to EOS 30D; new: ISO is always displayed; new: B/W shooting mode icon; new: maximum burst available now two digits
Dioptric adjustment: User-set from -3.0 to +1.0 (range can be extended using optional Canon dioptric Lens E, plus rubber frame Eb)
Mirror lock-up: Possible via Custom Function III-6-1
Eyepiece shutter: None (cover is provided on included strap)
Color space: Standard sRGB or Adobe 1998 RGB (separate setting on Menu)
White Balance: Auto; Pre-set (Daylight, Shade, Cloudy, Tungsten, Fluorescent, Flash); color temperature (set by user from 2500K to 10,000K in 100K increments); custom (shoot white object or 18% gray card, base WB on that neutral object)
White Balance correction: Fine-tuning of overall color, in any white balance mode; amber–blue correction, in 9 steps; magenta–green correction, in 9 steps; set on graph on LCD monitor, using 9-way controller; both types of correction can be combined
White Balance bracketing: Three separate files written with a single click of the shutter; can be varied in the amber–blue direction, or the magenta–green direction; can be adjusted up to +/- 15 mireds (equivalent to 3 steps on the 9-step adjust scale); can be combined with standard auto exposure bracketing (9 files written to CF card)
Picture style: Extensive range of settings for user to tailor color, contrast, sharpness, etc. to their preference; same characteristics as previous EOS SLRs with Picture Style control
Black and white recording: Set via monochrome setting within Picture Styles menu
Computer connection: USB 2.0 Hi-speed, via small "B"-type USB connection
Remote control: N3-type push-in terminal (same as EOS 20D, EOS-1D Mark II, etc.)
Video-out: Single-pin mini-jack
Direct Printing compatibility: PictBridge printing to compatible Canon and other brand printers
Compatible images: JPEG, RAW, or sRAW, if they comply with DCF protocol
Preview effects on camera's LCD: Printing effects can be previewed (includes brightness, levels, contrast, color saturation, color tone, and color balance--face brightener and red-eye correction cannot be viewed)
Connection to printer: Via USB cable included with camera
DPOF image marking: Compatible; images can be "tagged" while reviewing on LCD monitor
Battery: BP-511A, BP-511, or BP-512 (rechargeable lithium-ion, same as EOS 30D) (BP-511/BP-512: 1100mAh; BP-511A: 1390mAh)
Shooting capacity: Approximately 1100 shots (at 68 degrees F / 20 degrees C); approximately 800 shots (at 32 degrees F / 0 degrees C)
Charger unit: Canon CB-5L or CG-580 (also can be charged with compact power adapter CA-PS400)
AC adapter: AC adapter kit ACK-E2 (optional; consists of adapter AC-E2, and "dummy battery" DR-400)
Battery grip (optional): Battery grip BG-E2N or BG-E2
Date/time back-up battery: CR2016 lithium battery--coin-type; user-replaceable (estimated life 5 years)
Body exterior material: Magnesium alloy top, front, and rear covers
Chassis material: Polycarbonate and stainless steel
Lens mount: EF lens mount; metal; compatible lenses: all Canon lenses for EOS cameras
Compatible with EF-S lenses: Yes
Custom functions: 24 custom functions, in four distinct categories; 9 entirely new custom functions
Operating temperature range: 32 degrees to 104 degrees F, at 85% or lower humidity (0 degrees to 40 degrees C)
Dimensions (W x H x D): 5.7 x 4.2 x 2.9 inches (145.5 x 108 x 73.5 millimeters), very slightly larger than EOS 30D
Weight (without battery or CF card): 26.1 ounces (740 grams), approximately 1.4 ounces (40 grams) heavier than EOS 30D
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Giedo

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Canon 40D
« Reply #6 on: August 19, 2007, 03:51:03 pm »

40D with auto ISO... finally! Thank you Canon.
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Giedo

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Canon 40D
« Reply #7 on: August 19, 2007, 04:04:52 pm »

Better AF and sealing.  Just what I wanted.

Where do I sign?
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John Sheehy

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Canon 40D
« Reply #8 on: August 19, 2007, 04:14:35 pm »

Quote
40D with auto ISO... finally! Thank you Canon.
[a href=\"index.php?act=findpost&pid=134171\"][{POST_SNAPBACK}][/a]

It's limited to ISO 800, and 400 in manual mode if I understand correctly.  I can't quite thank them for that, yet.  Much of my shooting happens at ISO 1250/1600 on my 30D.  I need to be able to set my camera in manual mode for the lowest light and ISO 1600, and have the ISO adapt for brighter conditions, to avoid blown highlights.

How hard would it be to include user-program modes?

I want to dictate ISO, Tv, and Av for specific real-world absolute metering levels, in a user mode.  Is that too much to ask for?  What the 40D offers isn't anywhere close to that ideal.  We are living in the dark ages.
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erikhaugen

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Canon 40D
« Reply #9 on: August 20, 2007, 06:20:01 pm »

Does anyone know how sraw works?  How is the smaller image created - does it use Lanczos or bicubic or what?
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tzrider

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Canon 40D
« Reply #10 on: September 24, 2007, 04:22:42 pm »

sRAW has a smaller resolution. One can for example combine
L+RAW of L+sRAW. L being the JPG on full resolution and the
sRAW being a raw (yes, what else) on a lower resolution.
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Jonathan Wienke

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Canon 40D
« Reply #11 on: September 25, 2007, 12:22:12 pm »

Quote
sRAW has a smaller resolution.

You've missed the point. All images output by the camera come from the same sensor data. sRAW has some additional processing done to the image data to reduce the number of pixels in the saved file. If the method used is not disclosed by Canon (and it probably isn't, camera companies being the secretive bastards that they are) then it's anyone's guess.

Regardless of whether it's bicubic or lanczos or whatever, the best approach is to take some test shots in both RAW and sRAW if you think you might be interested in using sRAW and compare quality between letting the camera downsize vs you doing it later in PS.
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