Real filter size!

Red Robin

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I have a Nikkor 1:3.5 f=2.8 SM lens. A quite pretty and useful bit of chrome and glass. Wanting to "dress it up" my search began for a proper shade and a few filters to help it out. Finally I've found a Nikkor site that covers its history. The description of the proper size is ''slightly larger than 34.5"! Slightly larger? Don't want to be picky , but SLIGHTLY!!!! Glad it was finally cleared up.
 

480sparky

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2.8 lens? Do you mean 2.8cm, which would be 28mm?

"Proper size" may well refer to the physical diameter of the lens, not the filter size. And I seriously doubt your lens is 34½ inches in any dimension.

KEH states a 34mm filter thread.
 

AgX

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Maybe that statement was due to conversion from the metrical to the imperial system. But even added a typo: 3.25" still would be too large for such type of lens.

How was that enigma solved?
 

ciniframe

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I have one of those 'weird filter size' lenses. Not nearly so prestigious as your Nikkor. It is a "duo-Tamron 135mm f4.5" comes with a teleneagative cemented doublet to extend the focal length to 225mm f7.7, like I said, weird lens. Oh yeah, almost forgot, configured for M42 mount.

The filter size appears to be just a bit less than 39mm. That size is just a little too big but a 37mm is way too small. I've not ever come upon any filter size between those two. I thought it might be an uncommon series size, like series 5.5 but have not been able to test that. Old advertizing photos seem to show that the lens originally came with a step-up filter adapter with the lens hood retaining the unthreaded filters, probably series 6
 

MattKing

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Could the lenses be designed for Series filters?
 

msage

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Red Robin said:
. Finally I've found a Nikkor site that covers its history. The description of the proper size is ''slightly larger than 34.5"! Slightly larger? Don't want to be picky , but SLIGHTLY!!!!
Click to expand...

Don't believe every thing you read on the internet!
 
OP
OP

Red Robin

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Thanks all for the helpful comments, but this is a rangefinder lens produced in the 50's . It's the chrome version. Very tiny LTM lens. A 34mm is so loose it falls out tried tape, wax string - UGH!
 
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John Koehrer

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Check around for a push on Series adapter. The adapters were made in fractional sizes(lens) to Series(filter).
I suspect you're going to need a ??mm to Series Vl adapter.
The Series Vl filter measures about 35mm diameter.
 

John Koehrer

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^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
The manual in the link however is correct. But ONLY as it refers to the SC lens.
The Nikon SC lens uses the 43mm filter thread and the hood appears to incorporate a Series Vll ring.

The 28/3.5 LEICA mount the OP refers to uses a 34.5mm filter and the size is noted in the description.
The lenses differ considerably in cosmetic and mechanical setup. The optical formulas were the same.
 
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