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Author Topic: 100mm f/2.8L with a diopter?  (Read 1798 times)

RussRoc

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100mm f/2.8L with a diopter?
« on: May 10, 2013, 11:10:46 PM »
Is there a down side to putting a +4 diopter on the front of a 100mm f/2.8L, to cut down on the minimum focal distance?   ???

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100mm f/2.8L with a diopter?
« on: May 10, 2013, 11:10:46 PM »

neuroanatomist

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Re: 100mm f/2.8L with a diopter?
« Reply #1 on: May 11, 2013, 12:24:14 AM »
Reduced IQ from the diopter.  You may be better off cropping...
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AprilForever

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Re: 100mm f/2.8L with a diopter?
« Reply #2 on: May 11, 2013, 03:02:27 AM »
Try extension tubing...
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brad-man

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Re: 100mm f/2.8L with a diopter?
« Reply #3 on: May 11, 2013, 07:38:21 AM »
Try extension tubing...

+1  I use a 25mm tube with excellent results.

TommyLee

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Re: 100mm f/2.8L with a diopter?
« Reply #4 on: May 11, 2013, 09:12:40 AM »
as said above 12mm and 25mm tubes... work great


Dick

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Re: 100mm f/2.8L with a diopter?
« Reply #5 on: May 11, 2013, 09:56:39 AM »
Extensions work well indeed, but may require additional light that can end up ruining everything. I can't think of a more effective way to ruin macro shots than using a ring flash. Be ready to miss some shots too, when interesting objects appear 1 meter away.
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Re: 100mm f/2.8L with a diopter?
« Reply #5 on: May 11, 2013, 09:56:39 AM »