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About that Bokeh (Another FF/m43 comparison)

Started Sep 15, 2015 | Discussions thread
Michael Jardine
OP Michael Jardine Senior Member • Posts: 2,006
Re: you fell for the oldest trap

tko wrote:

DOF and blur aren't only a function of sensor size. That's the same mistake the causes cell phone owners to proudly show off their sensor's DOF ability when they're doing a macro shot.

Any macro, for any format, has limited DOF--almost impossible to avoid. Any photo of something really large, like a building, has all the DOF you can handle for any format. The discriminator is objects about the size of the human body, where you can clearly see the difference between formats.

DOF is the square is the magnification, where magnification is object size to image size. Zoom in twice as much, you have 1/4th the DOF. View the resulting image twice as close, less DOF (you can see the blur more easily.)

So, yes, you shone you can get the same DOF by using different conditions even with different sensor sizes.

Thanks for your comments, tko, even though you won't read them

And sorry to disappoint, but I happen to agree with you - not specifically with the mathematics (I believe, you, I promise) but with your point about getting the same DOF by using different conditions even with different sensor sizes.

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Michael
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