its easy just go google the lens name ..
schneider has a ton of info on their lenses
and a chart to determine what vintage it is.
just go to schneideroptics.com >> photography >> whatveryou want
the problem with LF lenses is that some seem
like they will cover 4x5 but ... they don't cover
much bigger than 2x3 or 3x4 .. and vignette the corners
(sometimes bad and sometimes worse ).
there is a massive chart on the large format site that has
tons of LF lenses on t, and all the information you could ask for.
~Stone | Sent w/ iPhone using Tapatalk
~Stone | "...of course, that's just my opinion. I could be wrong."~Dennis Miller