Veil with CCD and old camera lens

[JamesF]

It's entirely possible I have the numbers wrong Gina, but I was sure the EF lenses were somewhere in the mid-40s for backfocus.

James

[JamesF]

Oooh, now, this is a handy resource (assuming of course that it is right

https://en.wikipedia.org/wiki/Flange_focal_distance

I wish I'd known it was called the "flange focal distance"...

James

[Gina]

I had all this worked out some time ago but now I can't be sure I remember correctly.  I'll have to trawl through my old threads.  I have a triple imaging rig project on the books which I plan to get back to shortly so I'll be checking up on this anyway.  I have a number of different FL Asahi Takumar and SMC lenses but I'm using the 105mm to start with and Atik 460EX mono cameras.  I have two M42x1 to T2 adapters to turn on the lathe and remote focussing to finish off plus mounting frames to 3D print.

[JamesF]

Yes, if I were doing it for myself then I think I'd crank up the lathe and turn what I needed myself.  Much easier to make one that's a smidge too long and then shave it down to be perfect that way.

I'm going to have to invest in some anodising kit at some point soon I think

James

[m.tweedy]

you people that can actually do proper stuff like making things I take my hat off to.