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Old 10-07-2018, 01:39 PM
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gregbradley
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Join Date: Feb 2006
Location: Sydney
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Quote:
Originally Posted by troypiggo View Post
Thanks so much guys. That'll teach me for posting so early in the morning - got the numbers all jumbled up off the top of my head. The 55 should have been 44, and 6.5 not 6.

So - looks like as long as the adapter is 8mm or so, it should work. Need 44mm from lens flange to sensor. Sensor is 35.56mm from face of camera, leaving 8mm max thickness of a T to EOS adapter.

Greg - thanks for the experience with lenses. It'll probably be my 135/2L and 35/1.4L. Both with good manual focus rings. I have the 85/1.2L but it doesn't manual focus well without elec contacts (by design).
If you are using a mount then more lenses are usable as you simply stop them down. I haven't done it but if you don't want sunstars on bright stars you can get a small stop down ring that screws onto the end of the lens and stops it down a tad. Being round it does not produce the sunstars.

There are exceptions but fast lenses tend not to be useful wideopen.

Greg.
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