I have been using this site as a valuable source of information for a long time. Now I finally have a reason to register: The following problem has been troubling me for a while and I hope someone can help me:
Last month I exchanged my Sinar to a Linhof Thechnikardan and had to get my Rodenstock Grandagon-N 75/4.5 changed from a Sinar to a Linhof lenseboard. The guy in the shop mounted it to a Toyo-View lenseboard instead, claiming that it should still work. It sits quite loosly in the camera, but I thought I will give it a try.
Last week I used the camera with this lense for the first time and I have noticed that the lefthand side of the image is somewhat unfocused.
Since then I have been doing numerous testshots (of a carpet hanging flat on a wall)
- with 10mm shift to the left
- with 0mm shift
- with 10mm shift to the right
The lefthand side of the image is always blurry (a strip of about 2cms) !
The guy in the shop claims I am too close to the edge of the image circle. But I doubt that! I have been doing some wild shifting with that lense when I still used the Sinar, It gave me black corners every now and then but never any blurriness!
Do I have a
camera problem
a problem with the lenseboard
or a problem with depth of field (aperture 22.5 for a flat, perpendicular object)????
Please help, any comment much appreciated.
Thanks,
K. Mayer
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