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Ferguson

Cape Coral, US
5701 posts

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"RE: As I recall, Bill Claff's numbers indicate..."

Ferguson Silver Member Fellow Ribbon awarded for the generous sharing of his high level expertise in the spirit of Nikonians Nikonian since 19th Aug 2004
Sat 10-Mar-12 01:09 AM

>It is the other way around. The cropped image has less DOF
>than the uncropped image (at same f-stop, same focal length,
>same subject distance). If you want to maintain a given DOF,
>then you will need to stop down the aperture, which usually
>means higher ISO (if you want to maintain you shutter speed),
>so less DOF for the cropped image.

Well... no. At least not unless I misunderstand your point.

For a given FIELD OF VIEW a cropped sensor on the same f-stop and focal length will have a different DOF than an FX sensor.

But if it's the same distance, f-stop, focal length, the actual in-focus area is the same whether the light falls on the cropped portion of the sensor or the whole sensor. Just think about it in post processing -- if you crop you don't change DOF, you just change field of view.


Comments welcomed on pictures: Http://captivephotons.com

A general, generic topic 800 as DX crop or not [View all] , dhmiller Silver Member Donor Ribbon awarded for his support to the Fundraising Campaign 2014 , Fri 09-Mar-12 04:37 PM
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Reply message RE: 800 as DX crop or not
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Reply message RE: 800 as DX crop or not
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Reply message RE: 800 as DX crop or not
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Reply message RE: 800 as DX crop or not
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     Reply message Sure, viewfinder magnification...
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          Reply message RE: Sure, viewfinder magnification...
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               Reply message True...
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                    Reply message RE: True...
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                         Reply message Well, more or less...
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Reply message As I recall, Bill Claff's numbers indicate...
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Reply message RE: As I recall, Bill Claff's numbers indicate...
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     Reply message RE: As I recall, Bill Claff's numbers indicate...
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     Reply message No, Tom's right about that...
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     Reply message RE: As I recall, Bill Claff's numbers indicate...
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          Reply message You need to be careful here Tom...
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               Reply message RE: You need to be careful here Tom...
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                    Reply message RE: You need to be careful here Tom...
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                         Reply message Well Eric...
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     Reply message Yes, that's right Tom...
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          Reply message RE: Yes, that's right Tom...
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