Quote Originally Posted by ntenny View Post
The focal plane moved back a bit, right? Can you still focus at infinity?
Most 9x12 cameras would be fine with their normal standard lens, usually a 135mm or 150mm, but some like my two Patent Etui's need the lens standard pulled to the Infinity position to lock rigid.

There's a camera technician/repairman, I think semi retired, who makes occasional one off 5x4 conversion backs mainly for 9x12/Quarter plate Recomar's, he's somewhere in the US and has been making them for many years, someone posted a link either here or the LFPI forum some time ago.