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Lens focus The place to talk about your camera's glassware.

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  #1  
Old 12th July 2011
sponner sponner is offline
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DOF Question

Probably a dumb question but..........

When photographing the same subject with the same aperture which would have the greater depth of field a 50mm prime or a 12-60 at 25 mm, I am assuming that the camera is at a distance to fill the frame equally with the subject, i.e. closer to the subject at 25mm.

Or would it be about the same ?
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Old 12th July 2011
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Kees Kees is offline
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Re: DOF Question

At f10:
25mm, distance to object 3m: 1.75m - 10m
50mm, distance to object 1.5m: 1.38 - 1.64m

At f5.6:
25mm, distance to object 3m: 1.25m - 1.88m
50mm, distance to object 1.5m: 1.43m - 1.58m

Online DOF calculator is your friend.
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Old 12th July 2011
sponner sponner is offline
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Re: DOF Question

wow, that's exactly what I was after thanks!
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Old 26th September 2011
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Re: DOF Question

some very useful info there, cheers
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Old 26th September 2011
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Re: DOF Question

I actually find that this site gives even better visual insight.
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