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Jim Pearce

Grimsby, CA
4397 posts

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"You need to be careful here Tom..."

Jim Pearce Silver Member Nikonian since 02nd Mar 2004
Sat 10-Mar-12 04:38 AM

"DX has less DOF than FX."

You were doing well, until you said this Tom. In fact, one of the key limitations of DX is that an f2.8 lens acts like an f4 lens on FX. You can never obtain the same shallow DOF you can with FX. The corollary to this is that with DX you get the same DOF for the same scene with an aperture one stop larger.

This is quite consistent, however, with a crop having less DOF than the file from which it is cropped.

Jim

Visit my Nikonians gallery.

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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