I use the original Suoer Takumar 1:3.5/55 on the 4x5 Graflex with the RH8 Rollfilm back.
The RH8 has a larger frame than the Pentax 6x7
Here is an uncopped photo of the larger frame
There is not noticeable corner drop off, for example in the snow bank in the lower left corner:
https://app.box.com/s/0bxuuay34u70dswizufs
This lens has a 100mm bayonet/filter thread and I found an original rectangular hood for it.
https://app.box.com/s/rte9vqs9ub91lfgiyx7cysqpo7a2d8r1
The RH8 has a larger frame than the Pentax 6x7
Here is an uncopped photo of the larger frame
There is not noticeable corner drop off, for example in the snow bank in the lower left corner:
https://app.box.com/s/0bxuuay34u70dswizufs
This lens has a 100mm bayonet/filter thread and I found an original rectangular hood for it.
https://app.box.com/s/rte9vqs9ub91lfgiyx7cysqpo7a2d8r1