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Powermate with ext tubes with/without diagonal little focus change??
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31-08-2021, 02:17 AM
Renato1
(Renato)
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Join Date: Mar 2014
Location: Frankston South
Posts: 1,263
Quote:
Originally Posted by
Don Pensack
As you can see from this chart, the magnification changes very little behind the PowerMates with different back focus distances:
https://www.televue.com/engine/TV3b_...id=53&Tab=_app
The 4x PowerMate gets to 4.45x at 100mm away from the lens.
Thanks. That's interesting to know.
Regards,
Renato
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