22501Re: Megrez90 and Flattener
- Dec 4, 2013
I have experience with the f/6.9 model.
Borg 7887 cover 100% (I have this one)
TeleVue TRF-2008 cover 90%
WO FFIII cover 80%
If your sensor size is small, FFIII is a great choice.
However, your f/6.2 model is a completely different telescope, optical schema is different. It should have a different name to avoid confusion. I think Gianluca's statements are based on experience, so you contact him for more details.
My only suggestion is to pay great attention to sensor-to-lenses distance, normally 55mm. This distance comes free on Nikon's (45+10mm T2), using Canon you have to add 1mm.
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