Hi to the forum.

Has anyone had a problem using a 45mm lens with the Arca 69FC. An email I received mentioned that there were problems with

“using ultrawides requires a camera that is able to have precisely parallel lens and film planes. The depth of focus (not depth of field) is extremely shallow as the lens moves that close to the film plane, and if your 4x5 is off "Zero" or "Parellel" even by a hair, you could be introducing unwanted scheimpflug, or worse yet, extreme top to bottom, or side to side focus error. I recall reading some in-depth info about parallelism on the Photo.net Large Format Forums”.

Could this create a problem, some additional input would be appreciated.

Will the Arca 69 rfh adapter also take a 67 rfh? Has anyone ever measured the rise that they get with a 47mm lens.



Thanks
Karl