Quote:
Originally Posted by multiweb
You've got 0.927 for the C300 and 0.980 for the refractors. 
So for a FSQ I'd use 0.980 or 0.995?
For the CN-212, 0.927 or 0.980? |
0.98 is about right for a FSQ/4-lens system.
0.927 was calculated for two mirrors and a 3 lens corrector.
I don't obsess too much about the YMMV factors
Cheers,
Rick.