DOF and Cropping take 2

Started 10 months ago | Discussions thread
justin23
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Re: DOF and Cropping take 2
In reply to moving_comfort, 10 months ago

This is a really good explanation IMO.

I just don't get the whole idea of equivalence, its like people need a reason to force Pentax to make them a FF camera. As I stated on other threads, I use a Q, K5 and 645 film and never ever do I think now how would I make this equivalent. I shoot the subject to get the result, and I rarely ever have an issue of having too little DOF.

I had no idea that cropping changed the DOF however it does make a lot of sense when you think about it. An APS-C sensor is just a crop from a FF sensor. Now whether you do it at sensor level or in post production it is the same thing as its the same image projected onto the same focal plane, just that FF captures more on that focal plane thus changing the FOV, but no other characteristics change.

Yes there could be some arguments regarding exposure, but even different cameras using the same sensor seem to have different exposures for the same scene and it can be adjusted of course!

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Justin
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