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April 20, 2018, 05:32:22 AM
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Will this allow F8 focusing on 5DMIII
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Topic: Will this allow F8 focusing on 5DMIII (Read 3136 times)
RGF
Canon EF 300mm f/2.8L IS II
Posts: 2560
How you relate to the issue, is the issue.
Will this allow F8 focusing on 5DMIII
«
on:
April 21, 2013, 10:59:10 AM »
Just wondering if I placed a very thin 3rd party extension tube on the camera and then attached the lens/converters, would I be able to focus at F8 or higher?
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Will this allow F8 focusing on 5DMIII
«
on:
April 21, 2013, 10:59:10 AM »
neuroanatomist
CR GEEK
Posts: 22521
Re: Will this allow F8 focusing on 5DMIII
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Reply #1 on:
April 21, 2013, 12:58:47 PM »
Depends on the lens, I expect. I've tried stacking two TCs with a 12mm tube between on a 600/4 on my 1D X - only one is reported, phase AF tries and fails, contrast AF works with the 2x in back, fails with the 1.4x in back.
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EOS 1D X, EOS M6, lots of lenses
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Flick
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Mt Spokane Photography
CR GEEK
Posts: 14104
Re: Will this allow F8 focusing on 5DMIII
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Reply #2 on:
April 21, 2013, 01:01:24 PM »
Yes, it seems to work, depending on the lens. My 100mmL struggles doing this, but others focus fine. Of course, you can only focus on things that are close.
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jon_charron
PowerShot G1 X II
Posts: 39
Re: Will this allow F8 focusing on 5DMIII
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Reply #3 on:
April 21, 2013, 01:47:31 PM »
The firmware that comes out in a few days will allow f8 focusing through the cross point sensors.
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neuroanatomist
CR GEEK
Posts: 22521
Re: Will this allow F8 focusing on 5DMIII
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Reply #4 on:
April 21, 2013, 01:50:18 PM »
Quote from: jon_charron on April 21, 2013, 01:47:31 PM
The firmware that comes out in a few days will allow f8 focusing through the cross point sensors.
Not all of them, presumably just the center AF point with 4 surrounding points available as expansion (but not user selectable).
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EOS 1D X, EOS M6, lots of lenses
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RGF
Canon EF 300mm f/2.8L IS II
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Re: Will this allow F8 focusing on 5DMIII
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Reply #5 on:
April 21, 2013, 01:55:16 PM »
Thanks.
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Re: Will this allow F8 focusing on 5DMIII
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April 21, 2013, 01:55:16 PM »
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Will this allow F8 focusing on 5DMIII