crop factor


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Nov 15, 2004
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Hi guys. i would like to know how to count or know the crop factor of a lens? how to get rid of excessive space like to much background or too much foreground when taking a propraite without croping? coz i realise when i zoom in, my pic is enlarge. thanks alot.
 

Winston

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Illidan said:
Hi guys. i would like to know how to count or know the crop factor of a lens? how to get rid of excessive space when taking a propraite without croping? coz i realise when i zoom in, my pic is enlarge. thanks alot.
Err...it's not Crop factor of the lens...more like the camera.
(then again..the Term "crop factor" isnt the right term to use...lol)

Different camera system have different figures

Nikon = 1.5x (exception D2X on 6MP has a 2.0x)
Canon = 1.6x (mostly, Exception 1D = 1.3x, 1Ds = 1x)
Konica Minolta = 1.5x
Olympus Four-Thirds = 2.0
Pentax = 1.5
...etc

so a typical 50mm lens will be

1.5x = 75mm on Nikon camera
1.6x = 80mm on Canon
2.0x = 100mm on Olympus 4/3 systems
1.3x = 65mm on a Canon 1D
1.0x = and no change (50mm) on a 1Ds/1Ds Mark II

You need cropping sometimes its becos the Non-DSLR cameras, are mostly in 4:3 format, whereas, a 4R photo (4x6) is in a 3:2 ratio.
Most SLR and higher end cameras can do a 3:2 ratio, makes the photos printed to be excatly the same ratio as the image captured.

If ur pics are in 4:3, you have to edit them in programs like Photoshop or get the shop to Print w/o crop (white border) or The pic will be cut off at the top and bottom by a bit.
 

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