|
Ok I have got it now. Only the FL and Size of Chip matters. But for CCDCalc I will need to work out the Apperture just for entry purposes.
I can understand now why binning does not change anything as the Chip size is still the same. So a Lens can only give you one FOV, unless you use a barlow or reducer (With lens).
How do Macro Extension tubes work then? What is there purpose, as they dont have any lens in them, but one would assume they do increase the FL.
|