Rodenstock Geronar 210mm not functioning for 5x7 field camera

[krondina]

Hello, I'm hoping someone can help me troubleshoot. I just purchased a Rodenstock Geronar 210mm lens in great condition for a vintage 5x7 field camera. Although this lens should be adequate, the lens does not cover the ground glass fully. I'm wondering if I am doing something wrong.

Thanks for your help.

[Alan Gales]

Your Geronar stopped down to F22 will give you an image circle of 242mm. The lens should cover 5x7 but it won't give you a lot of room for movements.

These were entry level lenses made for 4x5 that were cheaper in price but at the cost of coverage. They are fine lenses though.

[BradS]

you have the aperature all the way open when looking at the image on the ground glass --- right?