Canon 5D3 f8 firmware update extender question.

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senzazn12
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p.1 #1 · Canon 5D3 f8 firmware update extender question.

So it will be nice to AF now at f8 with an extender. Only a few more months to wait. However, I have a question. Is the f8 extender update only applicable to Canon extenders or will it work also on Kenko, Tamron and Sigma reporting teleconverters and extenders? Any clarification on this is greatly appreciated.

Jan 21, 2013 at 11:48 PM

mitesh
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p.1 #2 · Canon 5D3 f8 firmware update extender question.

The update should work for all TCs that report aperture f/8.

Jan 22, 2013 at 12:05 AM

Vancouver47
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p.1 #3 · Canon 5D3 f8 firmware update extender question.

I understand f/8 already works with the Kenko extenders, but most consider the IQ hit too much, particularly with the 2x.

Jan 22, 2013 at 12:18 AM

senzazn12
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p.1 #4 · Canon 5D3 f8 firmware update extender question.

Vancouver47 wrote:
I understand f/8 already works with the Kenko extenders, but most consider the IQ hit too much, particularly with the 2x.

To be honest, my 2X doesn't degrade much qualify and mine is the cheap Digital Concepts one. Usually the corners degrade slightly but usually when you are isolating a subject corners don't matter much.

Jan 22, 2013 at 03:15 AM

abqnmusa
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p.1 #5 · Canon 5D3 f8 firmware update extender question.

firmware update should benefit all TC's that create an F8 combination

you can focus at F8 now with non-reporting TC's

more info ...

http://www.fredmiranda.com/forum/topic/1172620/0?keyword=f8#11177672

http://www.fredmiranda.com/forum/topic/1138371/0?keyword=f8#10865045

This Tamron 1.4X TC has been very good with the 5D III - focus is fast enough for BIF

Tamron SP AF 1.4x Pro TC

2013 © abqnmusa

Jan 22, 2013 at 08:33 PM

senzazn12
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p.1 #6 · Canon 5D3 f8 firmware update extender question.

abqnmusa wrote:
firmware update should benefit all TC's that create an F8 combination

you can focus at F8 now with non-reporting TC's

more info ...

http://www.fredmiranda.com/forum/topic/1172620/0?keyword=f8#11177672

http://www.fredmiranda.com/forum/topic/1138371/0?keyword=f8#10865045

This Tamron 1.4X TC has been very good with the 5D III - focus is fast enough for BIF

Tamron SP AF 1.4x Pro TC

I have the even cheaper Tamron C-AF 1.4 ($80.00) and the Digital Concepts 2X ($80.00) and I and a friend compared them to the more expensive reporting kenko and third party extender and there is little to no significant difference. Both are great! The non reporting cheaper extenders work faster and have the advantage of working at f8. I have a Kenko 3X and cant wait to autofocus with a 2.8 lens with the future firmware update. Image quality is great with 3X when stopped down a little. Just cant wait for the autofocus.

Jan 22, 2013 at 09:10 PM

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