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04-27-2012, 08:14 AM   #1
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A friend gave me a mystery lens

Here's one just like it.

No focusing ring, but there is an upside-down numbered aperture ring.

Bellows lens? Enlarger Lens? What is it's purpose, exactly?

Cheers,
Bobbo :-)

04-27-2012, 08:19 AM   #2
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Just a guess, it may be a bellow lens for macro photography only.

NaCl(doubt it would be an enlarger lens in T2 mount)H2O
04-27-2012, 09:23 AM   #3
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I agree with salt water on this - it is either an enlarger lens or a macro bellows lens. If it is a 100mm~150mm lens then it is probably a macro bellows lens, if it is a 50mm then it is probably an enlarger lens - that focal length has always been popular with 35mm enlargers, Using a 50mm lens on a bellows isn't exactly a bright Idea.
04-27-2012, 09:46 AM   #4
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It's 150mm.

04-27-2012, 10:00 AM   #5
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Its definately a bellows lens though 150mm is unusual they mostly come as 50mm or 100mm.
Glenn
04-27-2012, 10:19 AM   #6
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It is definitely a bellows lens, in fact it is very similar to a 135 mm soligor lens I got with my Miranda bellows, except my lens had the aperture mechanism fall apart, and all the blades separate

It can't really be an enlarger lens unless it is for a very large format negative, although the speed is about right

One thing you can do to verify this is to hold it above a piece of paper and focus on something distant. Judge how far above the paper the lens needs to be held to focus, if this is more than 40-50mm then it is meant to have a bellows between it and the camera. Bellows lenses are typically designed so that they can focus from infinity down to 1:1 or better on the bellows
04-27-2012, 10:41 AM   #7
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Usually the upside-down aperture numbers indicate an enlarger lens, but this is for bellows macro. The giveaways are 1) the name MACROtel meaning Telephoto Macro (there is also a Macrobel bellows), and 2) the T2 mount, suitable for bellows of many camera mounts.

The focal length is not significant -- I have Wollensak and Eastman enlarging lenses of 162-182-190mm. These were and are used for enlarging 9x12cm and 4x5in negatives. Focal lengths in the 250mm vicinity are for 5x7in negs. These are not uncommon.
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