Canon EOS 40D
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| Canon EOS 40D | |
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| Type | Digital Single-lens reflex |
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| Sensor | 22.2 x 14.8 mm CMOS |
| Maximum resolution | 3888 × 2592 (10.1 megapixels) |
| Lens type | Interchangeable (EF, EF-S) |
| Shutter | focal-plane |
| Shutter speed range | 30 s to 1/8000 s |
| Exposure Metering | TTL, full aperture, zones |
| Exposure Modes | Full auto, programmed, shutter-priority, aperture priority, manual |
| Metering modes | 35-area Evaluative, Partial, Spot, C/Wgt Average |
| Focus areas | 9 user points (cross type) |
| Focus modes | One-shot, AI Servo, AI-Focus, Manual |
| Continuous Shooting | 3 or 6.5 frames/second |
| Viewfinder | Optical / LiveView LCD |
| ASA/ISO range | 100-1600 in 1/3 EV steps; 3200 expansion available |
| Flash | pop-up, sync at 1/250 second |
| Flash bracketing | none |
| Focus bracketing | none |
| Custom WB | 7 presets, Auto and custom 2000–10000 Kelvin, 100 K steps |
| WB bracketing | 3 images, +/-9 levels |
| Rear LCD monitor | 3.0 in (76 mm), 230,000 pixels |
| Storage | CompactFlash (CF) (Type I or Type II) and Microdrive (max 32GB) |
| Battery | Li-Ion BP-511A rechargeable |
| Dimensions | 145.5 x 107.8 x 73.5 mm |
| Weight | 740 g (body only) |
| Optional Battery Packs | BP-511A, BP-514, BP-511, BP-512. BG-E2N grip allows use of AA batteries. |
The Canon EOS 40D is a 10.1-megapixel semi-professional digital single-lens reflex camera. It was initially announced on August 20, 2007, and was released at the end of August 2007. It is the successor of the Canon EOS 30D and can accept EF and EF-S lenses, and like its predecessor, it uses an APS-C sized image sensor, resulting in a 1.6x field of view crop factor.
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[edit] Improvements
Changes over the Canon EOS 30D include a higher-resolution sensor that retains the same dimensions and 1.6 crop factor relative to full-frame 35mm format. While the sensor is based on that of the consumer grade Canon EOS 400D, improved microlenses are employed to keep noise to levels at least as low as the 30D and much lower than the 400D. The LCD rear screen size is increased to 3.0 inches from 2.5 inches. Other changes include a larger 17 frame RAW / 75 frame JPEG buffer, and slightly faster 59 ms shutter lag, with a maximum frame rate of 6.5 frames/second (up from 5). The 40D uses the same diamond layout of nine autofocus points as the 30D and 20D, but has a AF sensor with nine cross-type points (up from one). The 40D can record in three formats, JPEG (of various quality settings), RAW and Canon's sRAW format which reduces images size to 2.5 megapixels. Because of the 40D's faster DiG!C III image processor, both RAW formats record 14bit colour (over 16 000 colour variations per channel) vs the 30D's 12bit colour which could only record 4096 per channel[1]. The viewfinder magnification has been increased by approximately 5% over that of the 30D. In addition, the viewfinder has been modified to display the current ISO setting and alert the user when shooting in black & white mode.
The EOS 40D also uses the DiG!C III image processor first introduced to the EOS line with the Canon EOS-1D Mark III. Other similar technological improvements drawn from the 1D Mark III and 1Ds Mark III include live preview with manual focusing and the EOS integrated cleaning system introduced on the 400D (Rebel XTi). Software bundles with the 40D allow direct control of the camera in live view mode from a computer connected via USB, with control of camera functions and on screen preview. This functionality is targeted at studio work and astrophotography.
Features new to the semi-professional model include weather and dust-resistant sealing of the battery door and storage compartment (more than the 5D offers but far less than that of the 1 series), and automatic ISO selection. Interchangeable focusing screens are introduced with 4 different optional models currently available.
The EOS 40D can accept the Canon Wireless File Transmitter WFT-E3/E3A for fast file transfer to a remote file server, either through an ethernet cable or a Wi-Fi network. This capability expands the EOS 40D's range of applications to sports and studio set ups where real-time transfer of the images is crucial.
[edit] Resolution
The Canon EOS 40D has several resolution settings:
- Large/Fine JPEG (3888 x 2592)
- Large/Normal JPEG (3888 x 2592)
- Middle/Fine JPEG (2816 x 1880)
- Middle/Normal JPEG (2816 x 1880)
- Small/Fine JPEG (1936 x 1288)
- Small/Normal JPEG (1936 x 1288)
- 14 bit RAW (CR2) format (3888 x 2592)
- 14 bit sRAW (CR2) format (1936 x 1288)
There are also six resolution settings for RAW+JPEG, which produces both a .CR2 RAW file and a .JPG file at the selected resolution and quality.
[edit] Features
The Canon EOS 40D features a Mode Dial on the top which selects the shooting mode. It is divided into two sections: Creative Zone and Basic Zone. The Creative zone provides manual and semi-manual modes; it gives access to RAW format, manual exposure, aperture and ISO sensitivity.
[edit] Creative Zone
- A-DEP: The camera automatically selects the aperture and shutter speed to keep most of the image in focus. (Only recommended in high light conditions as the camera tends to choose smaller f/stops)
- M (Manual): The camera lets you choose manually the aperture and shutter speed.
- Av (Aperture priority): The camera lets the user choose the aperture (f/) value and then automatically adjusts the shutter speed for correct exposure.
- Tv (Shutter speed priority): The camera lets the user set the shutter speed and automatically sets the aperture for correct exposure.
- P (Program AE): The camera automatically chooses an aperture and shutter combination for correct exposure and the user can change between one of these combinations.
- C1, C2, C3: Custom setting storage slots.
[edit] Basic Zone
- Auto (represented with a green rectangle): Completely automatic shooting.
- Portrait: The camera tries to blur the background for better looking portraits.
- Landscape: For shooting landscapes and sunsets.
- Close-Up: For shooting small objects near the camera.
- Sports: For capturing fast moving objects.
- Night Scene: Shoots with flash and with slow shutter so that the subject is illuminated by the flash and the background (e.g: a city) is also captured naturally in the night.
- No Flash: All automatic with no flash.
The camera features (like many others) two LCDs, one monochrome at the top, which contains all information pertinent to shooting, and a full-color one at the back, which is used for picture reviewing and menu navigation. The EOS 40D allows shooting information to also be displayed on the rear LCD.
The Canon EOS 40D also features a large dial on its back which is used for fast scrolling over the stored pictures or over the settings in the menu. The JUMP button can also be used to reach sections of the menu, as well as scroll through either 10 or 100 image in playback mode. The eight way controller above the dial is used to select one or all of the nine AF points, to move around a zoomed image in playback mode, and to set custom white balance.
Its internal flash can be set to release several consecutive strobe bursts to aid focusing in dim situations, but there is no dedicated AF assist lamp. Photographers can attach an external flash with AF assist lamp like many of Canon Speedlites.
[edit] Firmware and software
A firmware upgrade is always recommended for best results but instructions for doing so must be read carefully. Latest firmware and software upgrades can be found at CanonEOS.com.
Canon DPP 3.1 has been released alongside the 40D.
Initially, Adobe Lightroom did not have official support for the 40D though RAW and JPEGs from the camera did still work. Official support for the 40D as well as the 1Ds Mark III was added with Lightroom 1.3, available as a free update from Adobe.
[edit] See also
[edit] References
[edit] External links
- Canon's Official 40D Product Page
- The Canon EOS 40D Journal
- Digital Photography Review:
- Review at The Luminous Landscape, by Michael Reichmann
- Review at The-Digital-Picture, by Bryan Carnathan
- Review at Digitaltrends.com, by David Elrich
- Review at Camera-Labs, by Gordon Laing
- Review at photo.net, by Philip Greenspun
- Review at Tardis Data
- Review at Let's-Go-Digital, by Ilse Jurriën
Canon EOS Digital SLR Timeline
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