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What is the crop factor of the Nikon D40?

The Nikon D40 is equipped with an APS-C sensor, whose diagonal measures 28.4mm. The sensor has a crop factor (or format factor, or focal length multiplier) of 1.5.

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.

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Sensor size comparison with a film slide

With a crop factor of 1.5, the sensor in the Nikon D40 is smaller than the receptor area of a 35mm film slide or negative. As a result, a lens that is attached to the Nikon D40 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 33mm lens on the Nikon D40 will provide the same angle of view and depth of field as a 50mm normal lens on a film camera (33mm * 1.5 = 50mm).

Nikon D40 and Credit Card sensor measures
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Sensor specs and performance

The table below compares the sensor specs of the Nikon D40 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.

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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.
 
Nikon D40 APS-C 6.0 3008 2000none21.011.056156
2.
 
Nikon D40X APS-C 10.0 3872 2592none22.411.451663
3.
 
Nikon D50 APS-C 6.0 3008 2000none20.910.856055
4.
 
Nikon D60 APS-C 10.0 3872 2592none22.511.456265
5.
 
Nikon D70 APS-C 6.0 3008 2000none20.410.352950
6.
 
Nikon D70s APS-C 6.0 3008 2000none20.410.352950
7.
 
Nikon D80 APS-C 10.0 3872 2592none22.111.252461
8.
 
Nikon D3000 APS-C 10.0 3872 2592none22.311.156362
9.
 
Nikon D3100 APS-C 14.2 4608 30721080/24p22.511.391967
10.
 
Nikon D3300 APS-C 24.0 6000 40001080/60p24.312.8138582
11.
 
Nikon D3400 APS-C 24.0 6000 40001080/60p24.813.9119286
Further information on the sensor in the Nikon D40 and the camera's operation can be found in the camera manual.

In the United States, the D40 was initially launched in November 2006 at a price of $499.

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Camera to camera comparisons

In case you are interested in seeing how this camera compares to another one, just make a corresponding selection in the search boxes below. Alternatively, you can follow any of the listed hyperlinks for comparisons that others found interesting.

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    Specifications Summary
    Camera Model Nikon D40
    Camera Type Digital single lens reflex
    Camera Lens Nikon F mount lenses
    Launch Date November 2006
    Launch Price USD 499
    Sensor Specs
    Sensor Technology CCD
    Sensor Format APS-C Sensor
    Sensor Size 23.7 x 15.6 mm
    Sensor Area 370 mm2
    Sensor Diagonal 28.4 mm
    Crop Factor 1.5x
    Sensor Resolution 6 Megapixels
    Image Resolution 3 008 x 2 000 pixels
    Pixel Pitch 7.85 μm
    Pixel Density 1.63 MP/cm2
    Moiré control Anti-Alias filter
    Movie Capability no Video
    ISO Setting 200 - 1 600 ISO
    ISO Boost 200 - 3 200 ISO
    DXO Sensor Quality (score) 56
    DXO Color Depth (bits) 21.0
    DXO Dynamic Range (EV) 11.0
    DXO Low Light (ISO) 561
    Screen Specs
    Viewfinder Type Optical viewfinder
    Viewfinder Field of View 95%
    Viewfinder Magnification 0.53x
    Top-Level Screen no Top Display
    LCD Size 2.5 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 1/4000s
    Continuous Shooting 2.5 shutter flaps/s
    Shutter Life Expectancy50 000 actuations
    Silent Shootingno E-Shutter
    Time Lapse Photographyno Intervalometer
    Fill Flash Built-in Flash
    Storage Medium SDHC cards
    Single or Dual Card Slots Single card slot
    UHS card support no
    Connectivity Specs
    External Flash Hotshoe
    USB Connector USB 2.0
    HDMI Port no HDMI
    Wifi Support no Wifi
    Body Specs
    Battery Type Nikon EN-EL9 power pack
    Battery Life (CIPA)470 shots per charge
    Body Dimensions 124 x 94 x 64 mm
    (4.9 x 3.7 x 2.5 in)
    Camera Weight 522 g (18.4 oz)

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