12-01-2010, 07:50 PM
Even though I am a happy Voigtlander Avus owner, I'd have to say if I was starting over, I would consider the Zeiss Ideal 250/7 (9x12) just for the drop bed feature. The Voigtlander Bergheil is a great investment as the lens alone is worth good money and people will pay for the reputation.
No Ian, the film emulsion will be 0.3mm farther back than the plate emulsion when using film sheath inserts.
The adapter is there to hold the film flat and in place, but the folded-over edges mean that the emulsion is offset by 0.3mm.
The film sheaths I have let the film rest on the guides in the holders, and the folded-over edges stays free, so there's no offset. Film sheaths were probably manufactured to fit certain holders.