What is the crop factor of the Canon 40D?
The Canon EOS 40D is equipped with an APS-C sensor, whose diagonal measures 26.8mm. The sensor has a crop factor (or format factor, or focal length multiplier) of 1.6.
The crop factor is defined as the ratio of the 35mm full-frame film diagonal to the diagonal of a digital sensor. This number indicates how a lens behaves in relation to the size of the image sensor.
Sensor size comparison with a film slide
With a crop factor of 1.6, the sensor in the Canon 40D is smaller than the receptor area of a 35mm film slide or negative. As a result, a lens that is attached to the Canon 40D will offer a narrower angle of view and provide deeper depth of field than a lens of similar focal length and aperture on a film camera. The equivalent focal length is obtained by multiplying the actual focal length of the lens with the crop factor. For example, a 31mm lens on the Canon 40D will provide the same angle of view and depth of field as a 50mm normal lens on a film camera (31mm * 1.6 = 50mm).
Sensor specs and performance
The table below compares the sensor specs of the Canon 40D to those of several similar cameras. The reported DXO values are indicators of the sensor's imaging quality (higher is better), covering color depth (DXO Portrait), dynamic range (DXO Landscape), and high-ISO noise (DXO Sports). Larger sensor cameras tend to outperform cameras of the same generation that are equipped with a smaller imager. On the other hand, larger sensors are more expensive and require bigger and heavier lenses than smaller light receptors.
Camera Model |
Sensor Class |
Resolution (MP) |
Horiz. Pixels |
Vert. Pixels |
Video Format |
DXO Portrait |
DXO Landscape |
DXO Sports |
DXO Overall |
||
---|---|---|---|---|---|---|---|---|---|---|---|
1. | Canon 40D | APS-C | 10.1 | 3888 | 2592 | none | 22.1 | 11.3 | 703 | 64 | |
2. | Canon 10D | APS-C | 6.3 | 3072 | 2048 | none | 21.1 | 10.9 | 571 | 57 | |
3. | Canon 20D | APS-C | 8.2 | 3504 | 2336 | none | 21.9 | 11.0 | 721 | 62 | |
4. | Canon 30D | APS-C | 8.2 | 3504 | 2336 | none | 21.5 | 10.8 | 736 | 59 | |
5. | Canon 50D | APS-C | 15.1 | 4752 | 3168 | none | 21.8 | 11.4 | 696 | 63 | |
6. | Canon 60D | APS-C | 17.9 | 5184 | 3456 | 1080/30p | 22.2 | 11.5 | 813 | 66 | |
7. | Canon T3 | APS-C | 12.2 | 4272 | 2848 | 720/30p | 21.9 | 11.0 | 755 | 62 | |
8. | Canon XS | APS-C | 10.1 | 3888 | 2592 | none | 22.0 | 10.9 | 719 | 62 | |
9. | Canon XSi | APS-C | 12.2 | 4272 | 2848 | none | 21.9 | 10.8 | 692 | 61 | |
10. | Canon XTi | APS-C | 10.1 | 3888 | 2592 | none | 22.1 | 11.0 | 664 | 62 | |
11. | Nikon D90 | APS-C | 12.2 | 4288 | 2848 | 720/24p | 22.7 | 12.5 | 977 | 73 |
In the United States, the 40D was initially launched in August 2007 at a price of $1,299.
Camera to camera comparisons
In case you would like to check on the differences and similarities with other camera models, just make your choice using the following search menu. There is also a set of direct links to comparison reviews that other users of the CAM-parator app explored.
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Camera Model | Canon 40D | |
---|---|---|
Camera Type | Digital single lens reflex | |
Camera Lens | Canon EF mount lenses | |
Launch Date | August 2007 | |
Launch Price | USD 1 299 | |
Sensor Specs | ||
Sensor Technology | CMOS | |
Sensor Format | APS-C Sensor | |
Sensor Size | 22.3 x 14.9 mm | |
Sensor Area | 332 mm2 | |
Sensor Diagonal | 26.8 mm | |
Crop Factor | 1.6x | |
Sensor Resolution | 10.1 Megapixels | |
Image Resolution | 3 888 x 2 592 pixels | |
Pixel Pitch | 5.73 μm | |
Pixel Density | 3.03 MP/cm2 | |
Moiré control | Anti-Alias filter | |
Movie Capability | no Video | |
ISO Setting | 100 - 1 600 ISO | |
ISO Boost | 100 - 3 200 ISO | |
Image Processor | DIGIC 3 | |
DXO Sensor Quality (score) | 64 | |
DXO Color Depth (bits) | 22.1 | |
DXO Dynamic Range (EV) | 11.3 | |
DXO Low Light (ISO) | 703 | |
Screen Specs | ||
Viewfinder Type | Optical viewfinder | |
Viewfinder Field of View | 95% | |
Viewfinder Magnification | 0.59x | |
Top-Level Screen | Control Panel | |
LCD Framing | Live View | |
LCD Size | 3.0 inch | |
LCD Resolution | 230k dots | |
LCD Attachment | Fixed screen | |
Touch Input | No touchscreen | |
Shooting Specs | ||
Focus System | Phase-detect AF | |
Manual Focusing Aid | no Peaking Feature | |
Maximum Shutter Speed | 1/8000s | |
Continuous Shooting | 6.5 shutter flaps/s | |
Shutter Life Expectancy | 100 000 actuations | |
Silent Shooting | no E-Shutter | |
Time Lapse Photography | no Intervalometer | |
Fill Flash | Built-in Flash | |
Storage Medium | CF cards | |
Single or Dual Card Slots | Single card slot | |
Connectivity Specs | ||
External Flash | Hotshoe | |
Studio Flash | PC Sync socket | |
USB Connector | USB 2.0 | |
HDMI Port | no HDMI | |
Wifi Support | no Wifi | |
Body Specs | ||
Battery Type | Canon BP-511A power pack | |
Battery Life (CIPA) | 750 shots per charge | |
Body Dimensions |
146 x 108 x 74 mm (5.7 x 4.3 x 2.9 in) |
|
Camera Weight | 822 g (29.0 oz) |
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