Recommendations on 127mm lens for conversion?

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Matt Fisher
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Recommendations on 127mm lens for conversion?

Postby Matt Fisher » Tue 08 October 2013 / 17:09 pm

I'm thinking of converting a 100/250/etc. to a 127mm lens for manual operation. Most of the conversions I've seen use Polaroid-branded lenses with copal shutters. Is there a particular reason to favor this one over others, or are there others that would work as well? I think I want to be able to use a shutter-release cable and electronic flash. Please forgive my ignorance and thanks in advance!

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emeth
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Postby emeth » Tue 08 October 2013 / 17:15 pm

Moi aussi je veux bien des infos sur les tominon pola copal !! :D
ça m'intéresse ! :wink:
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klaxamer
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Postby klaxamer » Tue 08 October 2013 / 18:08 pm

the first particular reason is cheap price...
you could find them for few bucks, as they were common used on Polaroid MP3/MP4 copy cameras
but...
they are "flat field", recommended for plane documents at short focus
ok ok, it works, with a bit of distortion on infinity

the best solution is Rodenstock Ysarex 4.7/127mm, fitted on Polaroid 110A, 110B, or 120
great lenses, accuracy, and smaller in their Prontor shutter than Copal Press shutter

but for sure, harder to find for cheap price

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Postby 3rdTrick » Tue 08 October 2013 / 18:58 pm

I like the 127 Kodak Ektar 4.5. I have one on my converted Speed Graphic and I really like the look it gives. I have seen them for less than $75 US on the internet. Mine has X sync with a two prong terminal but there were many variations of that lens. I also have a Wollensak Raptar 127 on a 110 and I think I like it better than the Ektar.

Here one from the Ektar:
Image

The Polaroid branded Rodenstock lenses are also very good and usually have both X and M sync. Just be careful because the focal length of a 100/250 is 114mm and your rangefinder will off and not easily adjustable. Have you thought about converting a roll film camera instead?
Pete

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Postby Matt Fisher » Tue 08 October 2013 / 20:21 pm

Yes I have considered converting a 110a/b, but that's a lot more work! I think even I could change a lens in a few hours.

The write-ups I've read about changing the lens out on a pack-film camera indicate that stopping a 127mm down to at least f8 eliminates all (or almost all) problems with focusing caused by the rangefinder not being right. That seems like a limitation I can live with. I'm not a pro or anything (to say the least!), I just want something a step up from the automatics that won't cost as much as the 180/195.

Oh, thank you for the responses so far! Very helpful!

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Postby 3rdTrick » Tue 08 October 2013 / 21:46 pm

Check Igor Camera in Cleveland, he had a few Ektars in stock. Be sure to post the finished product for us. I will warn you that converting Polaroids does not stop at one...
Pete


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