Depth of Field : Basic Quick Tip - Dreamstime

Remember, if you shoot with a crop sensor camera you have more DOF than a full frame camera if you were to attempt framing the same shot with both types of cameras... Take the same 50mm f/1.4 lens and put it on a Full Frame D700 and then put it on a Crop D300. Assume you are shooting at f/1.4. Because of the crop factor on the D300, you need to step further back from your subject which gives you more depth of field. The same composition on the D700 will yield a background that is blurrier than the D300. This is one of the main reasons people prefer to shoot with a full frame camera.

Photo credits: Serban Enache, Danijel Micka.

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July 02, 2010


The conclusion is good (DoF varies with sensor size) but the explanation is not correct!
On top of aperture, distance to object and focal length (mentioned by Davulcu) there is so called "Circle of Confusion" that makes the difference between FF and crop sensor DoF.
Given a camera and an aperture, DoF is the same when we frame the subject the same, no matter what focal length and distance to subject we use. So it is not the distance to subject that modifies the DoF for FF but the "Circle of Confusion"

July 02, 2010


thanks for sharing :)

July 02, 2010

Dmccale the flower

July 01, 2010


Thanks for the tip but DOF is not only related to sensor size but three other different facts such as aperture , distance to object and focal length.

Bigger sensors might have more blurred backgrounds with less DOF when compared to pocket cams. But for sure , steping back means that you are changing the distance to your object and enlarging your view size with a smaller sensored cam.

My personal conclusion is something like "to estimate the DOF depending on all these factors"


Serdar Tibet

July 01, 2010


It's good to know!

July 01, 2010


Great tip! Thanks!

July 01, 2010


Thanks for the tip :)

July 01, 2010


Thanks for the tip! ;)

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