Fed 28 mm lens on a Zorki 1.

[thomassen]

Santa delivered a Fed 28 mm but it will not fit. It fit but whit almost a half turn longer before locking, compeer to the original lens. Industar 22. 50 mm. What to do?
The 28 mm looks great maybe some dust on the inside of the glasses, is it possible to clean by opening and will I get it back on the marks?
PS. A Pentax me super half case fit nice on the Zorki 1
Tom

 

[Jocko]

Hallo Tom - welcome to RFF

I'm sorry to be the bearer of bad news. Unfortunately, as you have discovered, the FED 28mm - a prewar lens - was made for cameras with a non-standard thread. Unless you are very lucky, it will not fit correctly on the vast majority of postwar Feds or any Zorki.

It will (hopefully) fit prewar FEDs, but some adjustment may be needed even in that case.

All the best, Ian

 

[thomassen]

Thank you Ian.
Tom

 

[Valkir1987]

You mean this has something to do with the lens register distance? The postwar lens mount distance is 28,8 mm. Or was the prewar lense mount different from the 39x1mm mount used by the postwar ones? Lenses and camera's where mass produced, but adapted to each camera induvidualy for the focussing distance.
I have a postwar fed now which awaites to be repaired someday, and if you screw on a lense the infinity mark stops at another point. 🙂

 

[Jocko]

You mean this has something to do with the lens register distance? The postwar lens mount distance is 28,8 mm. Or was the prewar lense mount different from the 39x1mm mount used by the postwar ones? Lenses and camera's where mass produced, but adapted to each camera induvidualy for the focussing distance.
I have a postwar fed now which awaites to be repaired someday, and if you screw on a lense the infinity mark stops at another point. 🙂

That's righ Valkir - both! Prewar FEDs had a non-standard screw - I think that Leitz employed the 39mm screw used on microscopes, whilst the Soviets assumed they had used the DIN 39mm screw. In fact the two are different. I believe that Canon originally made the same mistaken assumption. FED adopted the Leica standard in the early postwar period at the same time as the new version (f3.5 - f 16) of the I-10 50mm lens.

Tom and I had a chat about this and I'm glad to say that he's going to shoot a test roll - depth of field will hopefully cover a multitude of mounting sins 🙂

Cheers, Ian

 

[thomassen]

Lads

The film arrived from the lab and you can see the images on the link.

Its not 300 $ quality on the images, except for the one of me taken whit the

Industar 22.

The fed images was taken whit 4,5 f and the speed 1/60. some in doors photos

had an ugly grey blur. Film is 200 asa

Tom

http://picasaweb.google.no/tomkyudo

 

[thafred]

Hi Tom,
The Fed 28 picture looks like it has haze or something in the lens...or maybe it´s just a very low contrast pre war design?

anyways...I´ve taken my freedom to adjust the Fed 28 pic a little....looks not bad IMHO! (use it in B+w and mabe put a deep orange filter infront of the lens won´t be too bad i guess)

best regards

 

[arothaus]

Hello,

many non-coated prewar lenses produce pictures with very low contrast. And they are mostly not very good for taking colour pictures. In b/w a lens hood and a yellow filter can help to improve image quality. I had a FED 2/50 lens (Leica Summar copy) and the look was very "special" - similar to that of the 28mm FED. Stopping down the lens will improve the image quality (vignetting) but these prewar wide angle lenses are all not very good at all (including Leica lenses).

A much better deal is the 6/28 Orion-15. It has almost no distortion, and regarding to the KMZ resolution charts it is the sharpest USSR rangefinder lens. It shows some vignetting at f/6, but stopped down this lens produces excellent results.

Regards,
Andreas

 

[thomassen]

Thank you gays.

The zorki is loaded whit b/w and the fed has now a c12 yellow filter glued on.
som dust inside the 1. and 2. glass (from front)but that is real USSR dust.

Tom