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Old 05-03-10, 06:42 PM
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Macro DOF question
When using my macro canon 100mm at its closest point and at its smallest apeture, what depth of field should I expect to get ?
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Old 05-03-10, 07:15 PM
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About 4 mm at a guess. but you'd probably get a sharper shot @ f/11 then the dof would probably be around 2mm.
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Old 06-03-10, 01:22 PM
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Forseti Forseti is offline
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Minimum focusing distance of the 100mm macro lens is 0.31m/1ft (see handbook).

@ f/2.8 - DOF = Near Limit 0.31m/1.0ft, Far Limit the same
@ f/11 - as for above
@ f/22 - DOF = Near Limit 0.99ft/301.752mm, Far Limit 1.01ft/307.848, Total 0.02ft/6.096mm. In front of, and behind subject 0.01ft/3.048mm

Info obtained from http://www.dofmaster.com/dofjs.html
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Old 06-03-10, 03:06 PM
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Minimum focusing distance of the 100mm macro lens is 0.31m/1ft (see handbook).

IM sulking now.

not much fun using hand book.
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Old 06-03-10, 04:16 PM
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Quote:
Originally Posted by Cutter View Post

IM sulking now.

not much fun using hand book.
LOL - maybe not fun but practical. Here's something else for you to sulk about - IM is spelt I'm.
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Old 06-03-10, 06:49 PM
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LOL - maybe not fun but practical. Here's something else for you to sulk about - IM is spelt I'm.
There you go again! some people are never satisfied. will crawl back into my hole now and have a little cry at my failiurs in life

Ps singed my hair! IS THAT HOW YOU SPELL IT?

Had a bad day going bed
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Old 07-03-10, 01:31 AM
matt wilson matt wilson is offline
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Cutter in a word it's not a lot .One thing you will find though is the lens is sharp irrespective of the aperture used .I am seriously thinking of getting an adjustable focussing rail for my tripod as I tend to move the camera itself by fractions to get decent macro.

Go and cry at you FAILURES !
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Old 07-03-10, 09:52 AM
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Found this chart, Depth-of-field data for EF100mm f/2.8 Macro USM
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Old 07-03-10, 12:40 PM
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Thanks for the info
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Old 07-03-10, 12:43 PM
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Cutter in a word it's not a lot .One thing you will find though is the lens is sharp irrespective of the aperture used .I am seriously thinking of getting an adjustable focussing rail for my tripod as I tend to move the camera itself by fractions to get decent macro.

Go and cry at you FAILURES !
Not heard of a focusing rail ? what flash do you use on your lense ?
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