Quote:
Originally Posted by graham.hobart
I see an old thread on here talks about optimal 55mm spacing from the focal plane with a QHY 8, but what about a DSLR?
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Hi graham
If its the same FF as this one you should be fine.
http://www.firstlightoptics.com/user...-47_Hotech.pdf
A Canon Eos DSLR has 44mm from the face plate to the sensor. The FF in the PDF is optimised for 55mm but...there is generally a Tring in the mix with a Canon which is about 11mm?
If you already have the FF, bung it on and see what happens. You should be pretty close