What is the "field reduction factor"?
It was used (on a webpage) to compute the effective FL of a telescope/DSLR combo. Such as "the telescope's FL is 540mm so with the 40d's "field reduction factor" the effective FL is 848mm.
Thanks!
Darryl
It was used (on a webpage) to compute the effective FL of a telescope/DSLR combo. Such as "the telescope's FL is 540mm so with the 40d's "field reduction factor" the effective FL is 848mm.
Thanks!
Darryl