Thread: How do you figure out what filter size for a given scope / camera combo?
View Single Post
  #2  
Old 08-04-2018, 02:47 PM
Merlin66's Avatar
Merlin66 (Ken)
Registered User

Merlin66 is offline 		 
Join Date: Oct 2005
Location: Junortoun Vic
Posts: 8,927
Filter size= (Distance from filter to chip)/ Focal ratio + Diagonal length of the chip.
Reply With Quote