Macro: 100 f/2.8: DOF change with extension tubes?

Started Jan 23, 2003 | Discussions thread
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Doug Warner
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Macro: 100 f/2.8: DOF change with extension tubes?
Jan 23, 2003

I've tried the 100mm macro iin the store. Still not enough DOF at f/32:

To increase DOF, I need to increase the overall distance to the subbject. One way is to the the insanely expensive 180mm f/3.5L.

The cheaper option is the 100mm macro with a Kenko extension tube set. By increasing the magnification, I can move back and still fill the frame. Has anyone used this combination to increase magnification and/or DOF?

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