Andrea B. Posted August 11, 2014 Share Posted August 11, 2014 ADMIN: As always, caveat emptor. Neither UltravioletPhotography.com nor its Owner-Admins have any affiliation with this Ebay offering.************************************************************************ Someone might be interested in this nice lens for $118. http://www.ebay.com/...=item46251f3d14 This lightweight aluminum, well-constructed lens has an M42 mount with the usual Pentax 45.46mm flange focal distance and so could be brought to infinity focus on Pentax, Sony or m4/3 bodies with the proper adapter. My copy is sharp and does not blur in the corners. The lens close focus is 1/2 meter. To give you an idea of its UV-capability:At ISO800 and f/8 on a slightly cloudy day, I made a UV landscape shot with my copy of this lens on the Pentax K5-broadband at a 1/2" exposure.At ISO800 and f/8 in an area where sunlight was bright but slightly attenuated by shady overhangs, I got a 10-feet away UV shot of my garden Rudbeckias in 2/5". The Rudbeckia UV-signature showed nicely.Note: The base of this lens does not quite cover my M42/K-mount adapter, so outer portions of the adapter must be covered by something to prevent light leaks though the rim of the adapter. Be aware that M42/K-mount adapters can exhibit this little 'problem' with some older lenses. I haven't found an M42/K-mount adapter yet that doesn't leak, but I'm looking. Link to comment
JCDowdy Posted August 11, 2014 Share Posted August 11, 2014 Note: The base of this lens does not quite cover my M42/K-mount adapter, so outer portions of the adapter must be covered by something to prevent light leaks though the rim of the adapter. Be aware that M42/K-mount adapters can exhibit this little 'problem' with some older lenses. I haven't found an M42/K-mount adapter yet that doesn't leak, but I'm looking.I stole one of my wife's black hair scrunchies, slightly fuzzy with a velvety or terrycloth texture, and slipped it over the junction where I thought a lens adapter leaked a bit around the camera body. Not the most elegant solution but seemed to work as far as I can tell. Link to comment
Andrea B. Posted August 11, 2014 Author Share Posted August 11, 2014 I used to have black hair scrunchies but they all turned grey. :Dj/k... A good idea. Link to comment
rfcurry Posted August 14, 2014 Share Posted August 14, 2014 I don't have any scrunchies. :D I bought and use two CZJ 50mm in Exakta mount on my Lumix. One is a Zebra 50/2.8 which is quite nice for a 50mm. It is an 8million serial number. The other is a slightly earlier serial number than the ebay offering and is 50/3.5. Both are excellent in UV. Of course, on the Lumix 4/3 they act like 100mm. By buying in Exakta mount, I got those lenses for less than $50 each on ebay. Link to comment
Andrea B. Posted August 14, 2014 Author Share Posted August 14, 2014 Which Exakta-m4/3 adapter brand are you using Reed? This is a good point Reed has made -->> that if you simply get an adapter, there are a lot of less expensive UV-capable lenses available in the less popular mounts. (...less popular these days, I mean. Very popular in former days...) Link to comment
rfcurry Posted August 15, 2014 Share Posted August 15, 2014 Andrea, I bought one of these - http://www.ebay.com/itm/320692812287?_trksid=p2059210.m2749.l2649&ssPageName=STRK%3AMEBIDX%3AIT back in 2012. I have had no problems with it. Regards,Reed Link to comment
JCDowdy Posted August 16, 2014 Share Posted August 16, 2014 Reed, Thanks for the tip on the adapter, I snagged a Steinheil Munchen Cassar S 2.8/50mm back in June and don't even have a mount for it yet!I wish it had been in M42 but an adapter is now headed my way. I have found that seller reliable so far. I spotted another Carl Zeiss Jena 50mm f:3.5 in Exaktaly your mount! :D John D Link to comment
Andrea B. Posted August 16, 2014 Author Share Posted August 16, 2014 I wonder if the coating on that 50/3.5 could cause problems for UV? Link to comment
JCDowdy Posted August 16, 2014 Share Posted August 16, 2014 I wonder if the coating on that 50/3.5 could cause problems for UV? Yous seems to do alright, or do I misread? Link to comment
Andrea B. Posted August 16, 2014 Author Share Posted August 16, 2014 I don't know if all the CZJ 50/3.5 are coated or not? Aren't there different models? I'll google around and see if I can find out anything.But yes mine does OK! Link to comment
JCDowdy Posted August 16, 2014 Share Posted August 16, 2014 I found this description on the Zeiss website. If I understand it correctly T is single coating and T* is multi-coated. Both of the lenses we linked were the older T lenses. Is yours marked with a T ? Link to comment
JCDowdy Posted August 16, 2014 Share Posted August 16, 2014 Somebody sure got a god deal on that Exakta 50mm! Shoot! I should have bid! :) Link to comment
Andrea B. Posted August 16, 2014 Author Share Posted August 16, 2014 Gotta be quick.BTW, it wasn't me who bought it.This last week I only bought 6 lenses off Ebay but none of them were Exakta mount. :)A Vivitar 200mm f/? chrome-nose, a Schacht 35/3.5, a Spiratone 75/3.5 flat-field macro, an Isco Gottingen 35/3.5, a Lentar 135/3.5 and a something-or-other which I will remember when I see it arrive. I am having so much fun with this! I'm enjoying the different ways that preset aperture mechanisms are designed. Quite varied. Some more easy to use than others. Link to comment
Alex H Posted August 17, 2014 Share Posted August 17, 2014 I found this description on the Zeiss website. If I understand it correctly T is single coating and T* is multi-coated. Both of the lenses we linked were the older T lenses. Is yours marked with a T ? Many relatively recent tessars made by Carl Zeiss Jena do not have T* sign but are multicoated. But they are easy to identify. Link to comment
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