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For example, when I use a 150mm Super Symmar HM stopped down to F32 with extreme rise, the bellows compacting problem occurs before vignette occurs.

Thanks for for sharing your thoughts.

But the 4x5 Sinar bag bellows I have does not allow for enough distance between the front and rear standard when using these lenses ( 150 and 210mm) with the subjects in question. The bag bellows...

I have been using Sinar F2 4x5 for a long time with wide angle lenses and bag bellows to photograph architecture. I am no wiz technically and consider myself an intuitive worker.

Now, I am using...