« on: January 22, 2013, 01:41:12 PM »
ps: If anyone can tell me why it says Powershot G-15 below my name I would appreciate it. Went to edit my profile but could not find that....
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Maybe known, but anyway.
A Kenko 1.4 PRO 300 DG won't do the trick on my 7D with 400 5.6. I guess you need a DGX .
Just had a look on the Kenko site. It should not be possible according to them. They state that:
"Most Canon EOS camera bodies are programmed to shut down auto focus if the calculated effective aperture for the lens and teleconverter is smaller than f/5.6, the Kenko Teleplus PRO 300 converters work the same way"
I don't understand the need to dial in -1 stop compensation? Doesn't the light loss caused by the TC automatically result in a lower metered exposure? I'm confused