75mm Super Angulon 5.6 - Lindhof Master Technica - SOFT EDGES

[nban1991]

Hey Guys,

New to this forum, so Gday from Australia!

Im using a Lindhof Master Technica 2000 (almost certain its the 2000 anyway), and am having som troubles with the Schneider-Kreuznach Super Angulon 75mm 5.6 Lens, being that when shot on a lindhof recessed lens board there is softness around the edges (see examples attached).




I was thinking that this may be because it looks like the lens doesn't completely screw into the lens board, with the back element of the lens hitting up against the "recessed" (see image) part of the board, stopping it from screwing up to where it needs to.


I have also tried on a flat lens board, and I can get it to focus at infinite but its literally on the edge of the rail and completely pushed back into the body of the camera (not how I intended its meant to be used).

Would love to hear some thoughts and possible fixes for this problem from you guys.

Thanks alot.

Nick

[Bob Salomon]

Did you remove that small anti twist screw from the back of the shutter before mounting it on your camera?

[nban1991]

Did you remove that small anti twist screw from the back of the shutter before mounting it on your camera?

Hey Bob,

If you mean the part that tightens the front element (of the lens) into place on the board before then screwing the back lens element in, then yes.

I’m not sure what other anti twisting screw there could be?

Nick

[Bob Salomon]

Hey Bob,

If you mean the part that tightens the front element (of the lens) into place on the board before then screwing the back lens element in, then yes.

I’m not sure what other anti twisting screw there could be?

Nick

A very small, silver headed, screw that sticks up slightly on the back of the shutter.

[Dan Fromm]

Well, if the rear cell won't screw all the way into the shutter you're cooked. The problem may be the anti-rotation screw that Bob mentioned. If it isn't, you're permanently cooked.

[ic-racer]

Some people pay a lot of money for a lens that does that....

[Bob Salomon]

Did you have it professionally mounted or did you do it yourself?

There is another possibility, the retaining flange has a lip and the les ay be hung up on the lip on one side.

[Greg]

Last year I bought a 75mm Fujinon lens off eBay. Looked to be in absolutely mint condition. When I shot a test sheet of film with it at f/16, got pretty much the same results that you did, center sharp but edges terrible. Pretty much 100% sure that the seller (or the person he acquired it from) replaced the rear set of elements with those from another lens. Fortunately was able to return it and get a refund.

[Tobias Key]

Looks to me as if that board isn't compatible with that particular lens. Looking online there seems to be another type of recessed board that is a simpler design that wouldn't foul the rear elements - could you not get one of those? They are chinese copies that come up on ebay.

[Chuck Pere]

Is the lens attached to the board using a front mounted flange instead of a rear retaining ring? Maybe you can remove the flange and try it as a rear retaining ring.