Hello. I am shooting a close-up photo with a 4x5 sinar. I have a choice of 3 lenses, 90, 150 and 210. I need to fill the frame with an object roughly the size of an orange and I want to get as much depth of field from front to back on all sides of the object (so tilts and swings are irrelevant as far as I can tell.) I can shoot f64 since I am working with strobes.

I am TRYING to avoid using the 90mm. since I want to minimize distortion as much as possible.

As far as I can tell from using a depth of field calculator: http://www.rbarkerphoto.com/DOF2.html (pretty great resource) I essentially have less than an inch of DOF with any of my lenses.

Are there any tricks or advice on this or am I limited by the nuances of the medium?

Many thanks as usual for your thoughts on the matter.

Best,
Serge