>>3621011>>3621020Notes saved, thanks.
I knew it was fairly complicated. I was just hoping to eek by most of that with a very simplified version since I don't have a spectrophotometer of any kind or access to one.
The lens is made up of 4 elements in two groups. It is ultra bright to the point of barely being able to use it without ND filters. The lens is 16mm in diameter and has a 7mm focal length. Each element is 1mm thick on the unfinished side and 2mm total thickness. I've been trying to get the F-stop as close to f/3.5 as I can with an aperture(2mm diameter I think). I'm just winging it right now.