Filter for Summaron 28F5,6 - 1956

[Jox]

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Hello,

I would like to mount a neutral or UV filter on this lens.

I tried a B&W 34mm
Marking on the box: 34 x 0.5 010M
Marking on the filter: B+W 34 010 UV-Haze 1x MRC

The diameter seems good but the thread does not match (3/4 turn and it has to be left there).

I don't know exactly what the dimension and the suitable thread would be, or where to find it...

In any case, I am pleasantly surprised and confirm that this lens which gives very nice renderings on SL2S and M11 (with its logical defects: vignetting, "approximate" corners at 5.6).

Thank you in advance for your information (this is my first screwing, yes yes !!!).

[UliWer]

A 34mm*0.5 filter should be right for the "old" 28mm Summaron. Both a Heliopan and a Rodenstock 34*0.5 fit well on my lens. Perhaps your lenses filter thread has  some irregularities. If screw-in filters don't work, you might try a A36mm push on filter. There are plenty on the second hand market from Leitz. 

[lct]

According to my Leitz catalog for 1958, there were only push-on filters for the Summaron 28/5.6 then. The U.V. one (FIOLA) can be found in silver (pic) and in black on e**y. I have no experience with them though.

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[UliWer]

34mm is a really odd size for filters and I think Leitz never made them, though they fit on the 5cm Summar as well as on the 2.8cm Summaron.

[Pyrogallol]

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Leitz 34mm filters on 28mm Summaron.

The books only list these filters as being for the 50mm Summar, 90mm Elmar, 28mm and 135mm Hektor. Type H.

[UliWer]

vor 13 Stunden schrieb Pyrogallol:

The books only list these filters as being for the 50mm Summar, 90mm Elmar, 28mm and 135mm Hektor. Type H.

Indeed, my 34mm filters from Heliopan and Rodenstock fit the 2.8cm Hektor as well as the Summaron, the Summar, the 9cm Elmar and the 13.5 cm Hektor. So it seems to  be the unusual filter size for lenses with the usual A36 filters. 

[Jox]

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FYI: in the absence of a filter, this little cap available on Amazon mounts very well on it

"Bouchon d'objectif diamètre 34 mm Lens Cap, compatible avec Nikon Canon Leica, Sony Sigma Tamron Olympus Fujifilm Panasonic Pentax Samsung Capuchon d'objectif appareil photo 34 mm"