Originally Posted by
Doremus Scudder
So it seems that there are boards with centered and offset holes; no new news there; and that the boards with centered holes are not factory standard. Despite what Bob posts, I believe that the factory offset for Linhof Technika boards places the hole off-center in the circular light trap, like the Wista board xkaes has posted.
I pursued the centering issue in another thread about Chamonix cameras and the consensus there was that an offset hole is needed to properly center the lens on Chamonix cameras as well (despite what cosummate_fritterer posts above...). Still, the issue was not definitively resolved. Maybe Hugo could chime in here?
If, as Bob states and is likely true, there is a standard offset for all Linhof Technika cameras that is the same, and that that applies to Wista as well, then the open question is whether other camera manufacturers (like Chamonix) that have designed their cameras to use Technika-style boards have adopted the same standard. And, it would be really nice to know, in mm as relates to the bottom or top of the board, just where the center of the hole should be in order to conform to Linhof/Wista specs. Maybe Bob could chime in again here?
Anyway, a board with a factory-machined hole in it from Linhof or Wista should center the lens on the film when the front standard is aligned to the reference marks; that seems fairly certain now. For other cameras that take Technika-style boards, there is still some question. And, for self-machined or after-market boards that could have the hole positioned anywhere, it seems best to mount the board with lens on whatever camera you use it on and make reference marks on the board itself for that particular application if centering the board is important to you.
Best,
Doremus
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