How screwed am I with this lens board?

[bieber]

I bought a recessed lens board for my 75mm lens, because I wasn't sure if it would be able to infinity focus on my new toyo field with the fixed bellows. Put it on the board, everything seemed fine...and then I put it on the linhof to toyo adapter

178985

Is there any kind of threaded release adapter that could likely get in there? I think I'm gonna do some testing with a flat lens board to see if I can make that work, because this doesn't seem promising

[Oren Grad]

Why not just get a recessed Toyo field camera board and use that directly, rather than mounting the lens indirectly via Technika board plus adapter? You'll have more room to work with.

[Jac@stafford.net]

You aren't screwed yet. You might try this adapter (https://encrypted-tbn2.gstatic.com/shopping?q=tbn:ANd9GcTr2q06lMM971QshqUSTcDZh7jzXpvZVbC6-hjmmjNrASBTanSU&usqp=CAY).

It could be screwed into the lens rather than into the quick-set on the board. (the quick-set might have to be removed. there are two screws on the back of the board holding it on. put tape over the little holes left)

[ic-racer]

Just a guess but if that is a Nikkor 75mm the Flange Focal distance is 81.3mm and if your camera is a Toyo 45CF its minimum Flange Focal distance is 80mm for the flat board. Maybe you can just use the flat board.

[bieber]

It is the Nikkor, and my camera is the 45A. The numbers do suggest that I could probably make it work, so I'm gonna try focusing on something far away with the flat lens board before I go buying more bits and pieces. I'm not sure if it'll make movements difficult/impossible to scrunch it up that much though

[bieber]

You aren't screwed yet. You might try this adapter (https://encrypted-tbn2.gstatic.com/shopping?q=tbn:ANd9GcTr2q06lMM971QshqUSTcDZh7jzXpvZVbC6-hjmmjNrASBTanSU&usqp=CAY).

It could be screwed into the lens rather than into the quick-set on the board. (the quick-set might have to be removed. there are two screws on the back of the board holding it on. put tape over the little holes left)


Any ideas where I could buy one of those?

[Bob Salomon]

You aren't screwed yet. You might try this adapter (https://encrypted-tbn2.gstatic.com/shopping?q=tbn:ANd9GcTr2q06lMM971QshqUSTcDZh7jzXpvZVbC6-hjmmjNrASBTanSU&usqp=CAY).

It could be screwed into the lens rather than into the quick-set on the board. (the quick-set might have to be removed. there are two screws on the back of the board holding it on. put tape over the little holes left)

That adapter won’t solve the problem. Just buy a Gepe wide angle cable release extension. It has a very short nipple so it can easily squeeze into the socket without forcing or strain.

[Jac@stafford.net]

That adapter won’t solve the problem. Just buy a Gepe wide angle cable release extension. It has a very short nipple so it can easily squeeze into the socket without forcing or strain.

What Bob said. The shorter Gepe is what I have. I had to unpack my outfit to check it.

[scm]

https://static.bhphoto.com/images/images500x500/1464640809000_762112.jpg
Dot Line Cable Release Extension (https://www.bhphotovideo.com/c/product/762112-REG/Dot_Line_DL_1496_Cable_Release_Extension.html)

[Bob Salomon]

https://static.bhphoto.com/images/images500x500/1464640809000_762112.jpg
Dot Line Cable Release Extension (https://www.bhphotovideo.com/c/product/762112-REG/Dot_Line_DL_1496_Cable_Release_Extension.html)

No, that does not have a short nipple and it is braided, it can not get into the same tight area as the Gepe without applying strain.

[Joshua Dunn]

I use this Gepe (https://www.bhphotovideo.com/c/product/233735-REG/Gepe_603007_Cable_Release_Extension_f.html?sts=pi) adapter on all of my recessed lens boards.

-Joshua

[bieber]

Okay, so I went out with a flat lensboard and I could focus on a hill that's at least a mile away with a bit of room to spare. Is that gonna be a close enough approximation of infinity? Camera movements were a little limited and it would be nice to have some more room, but not really spend-$50-on-an-adapter nice

[Mark Sampson]

Well, try it on the flat board for a while and see how you like it. If it doesn't work for you, at least you have an answer. IIRC, the effective definition of 'infinity' is 1000x the focal length of the lens, in this case 75m or about 250 feet. So your focus test should be ok.

[Rick A]

This would be the one Bob Solomon is referring to.
https://farm2.staticflickr.com/1759/41902654744_7701ccbd20_z_d.jpg

[bieber]

Interesting, and that's supposed to fit inside the recessed part of the board? Even that seems like it would be too big

[Jac@stafford.net]

Interesting, and that's supposed to fit inside the recessed part of the board? Even that seems like it would be too big

It is flexible.

[Jim Andrada]

I use one of the Gepe release extenders for my 75mm Grandagon in a recessed board for my Technika. It works because it has a short nipple and it's flexible.