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How many Megapixels does the Canon 40D have?

The Canon EOS 40D is equipped with a an APS-C sensor that offers an image resolution of 10.1 megapixels (MP), or 10.1 million pixels. With its native aspect ratio of 3:2, the sensor has 3 888 horizontal pixels and 2 592 vertical pixels.

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A high megapixel count makes it possible to crop any captured image substantially or to make very large prints from the image file. On the downside, large megapixel files are slower to transfer and take up more storage space on the computer harddisk. Also, high-resolution imaging requires sharper, more expensive lenses than low-res picture taking.

How large can I print with 10.1 MP?

The maximum print size of the Canon 40D for good quality output (200 dots per inch) amounts to 19.4 x 13 inches or 49.4 x 32.9 cm, for very good quality (250 dpi) 15.6 x 10.4 inches or 39.5 x 26.3 cm, and for excellent quality (300 dpi) 13 x 8.6 inches or 32.9 x 21.9 cm. Few people actually print their images that large on a regular basis, but it is nice to have the option to make very large prints of exceptional shots. Also, as mentioned earlier, a key advantage of high-MP cameras is that it is possible to crop an image ex-post and thereby, for example, change the composition of the capture or zoom in on some detail.

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Sensor specs and performance

The table below compares the sensor specs of the Canon 40D to those of several similar cameras. In addition to sensor class and megapixel count, DXO values are reported as indicators of the sensor's imaging quality (higher is better). Three aspects are covered: 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.

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Sensor Characteristics
#   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 2592none22.111.370364
2.
 
Canon T3 APS-C 12.2 4272 2848720/30p21.911.075562
3.
 
Canon 60D APS-C 17.9 5184 34561080/30p22.211.581366
4.
 
Canon 50D APS-C 15.1 4752 3168none21.811.469663
5.
 
Canon XS APS-C 10.1 3888 2592none22.010.971962
6.
 
Canon XSi APS-C 12.2 4272 2848none21.910.869261
7.
 
Canon 30D APS-C 8.2 3504 2336none21.510.873659
8.
 
Canon XTi APS-C 10.1 3888 2592none22.111.066462
9.
 
Canon 20D APS-C 8.2 3504 2336none21.911.072162
10.
 
Canon 10D APS-C 6.3 3072 2048none21.110.957157
11.
 
Nikon D90 APS-C 12.2 4288 2848720/24p22.712.597773
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Further information on the sensor in the Canon 40D and the camera's operation can be found in the camera manual.

In the United States, the 40D was initially launched in August 2007 at a price of $1,299.

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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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    Specifications Summary
    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 Aidno Peaking Feature
    Maximum Shutter Speed 1/8000s
    Continuous Shooting 6.5 shutter flaps/s
    Shutter Life Expectancy100 000 actuations
    Silent Shootingno E-Shutter
    Time Lapse Photographyno 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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