gunnarinla Posted August 11, 2009 Share #1 Posted August 11, 2009 Advertisement (gone after registration) I am considering selling or converting for Nikon use my Telyt-R 560/5.6, but either way, I'd like to have the inside glass surface cleaned, preferably by myself...but how would one go about doing that? I have a faint memory that the glass element could actually be removed from the barrel which would make the whole process a lot easier, but I'm not sure I'm remembering this correctly and not confusing it with another very long lens I had... Anyway- I'd be very grateful for any insight into this problem - cleaning the hard to get to inside of this very big piece of glass..... Quote Link to post Share on other sites More sharing options...
Advertisement Posted August 11, 2009 Posted August 11, 2009 Hi gunnarinla, Take a look here Inside of a Telyt-R 560/5.6. I'm sure you'll find what you were looking for!
Ivar B Posted August 11, 2009 Share #2 Posted August 11, 2009 I am not sure if the 5.6 version is different from the 6.8 version of this lens, but the lens elements could very easily be unscrewed from the barrel on the 6.8. There are in any case just a pair of cemented elements so there will be no problems getting in between elements. Have you tried just to unscrew the front part of the lens? Quote Link to post Share on other sites More sharing options...
andybarton Posted August 11, 2009 Share #3 Posted August 11, 2009 On my 560 the front of the lens just unscrews so that you can get to the back of the element. Quote Link to post Share on other sites More sharing options...
jaapv Posted August 11, 2009 Share #4 Posted August 11, 2009 Be careful with solvents. This lens is an one kitted element and you don't want to dissolve the kit. I would remove it, clean it with distilled water and dry it thouroughly. Quote Link to post Share on other sites More sharing options...
gunnarinla Posted August 11, 2009 Author Share #5 Posted August 11, 2009 Thanks all - jaapv, andybarton, Ivar B for replies I would be extremely careful with whatever I do and using solvents would not even be considered... (I remember a camera technician in Stockholm that used ether, but I don't have ether and don't know if it's possible to get in Los Angeles) What I would do first, is use Scotch Tape 810 and see how that would work...that is how I have cleaned filters and sometimes the top surface of smaller lenses...easy, cheap and very effective if you ask me - if there are "dangers" I haven't seen them yet... andybarton - no I haven't tried to unscrew it yet, wanted to search for advise first..! But seems the news is good. I also remember from this Stockholm technician, he had a "rubber belt" he wrapped around the front of a lens and that gave him a good grip to unscrew it. I would love to keep this lens and exchange mount for Nikon DSLR...on a DX sensor you end up with a 840mm Quote Link to post Share on other sites More sharing options...
andybarton Posted August 11, 2009 Share #6 Posted August 11, 2009 Changing the mount is a piece of cake Quote Link to post Share on other sites More sharing options...
SJP Posted August 11, 2009 Share #7 Posted August 11, 2009 (edited) Advertisement (gone after registration) I would NOT advise using Scotch tape, adhesive tape invariably contains some plasticisers and these can and will leach out of the adhesive onto the surface you are trying to clean. Use a rocket blower or some other compressed air to blow of any loose particles and then use a microfibre cloth (carefully no force until all the dust has gone). Next breath or condensed steam (= distilled water) or more ideally isopropanol and a swab. I guess your camera store will sell lens cleaning fluid of some sort, that should be OK but way too expensive. Alcohol (ethanol), methanol, ether are not suitable as they are too hygroscopic. Chloroform is the best lens cleaning solvent of all - but use this at your own peril (and sparingly). EDIT: on second thoughts - don't use chloroform. Edited August 11, 2009 by SJP Quote Link to post Share on other sites More sharing options...
tobey bilek Posted August 11, 2009 Share #8 Posted August 11, 2009 Just unscrew the front behind the glass. Replace the R tube with a M or visoflex tube which is shorter and add the CameraQuest Leica/Nikon adapter. It will space to perfect focus. Leitax makes thin mounts which you can put on R lenses so you can put them directly on Nikon cameras. Google Leitax. The bad news is the AA filter on Nikons softens the image which is why the M8 and DMR work so well. The AA softens Nikon glass image also. Quote Link to post Share on other sites More sharing options...
gunnarinla Posted August 12, 2009 Author Share #9 Posted August 12, 2009 ......yeah,I'm aware using tape is a bit "controversial" but many folks use it even on sensor filters...(there is the even less "tacky" Scotch 811...) I have prepped a picture that shows lens with a few "labels" in red if anyone cares to check...the lens really is pretty much like new if it wasn't for one scratch on the front barrel... ,...here's the link - copy and paste is safest way to get there - clicking on pict will show larger... Gunnar Kullenberg's Gallery :: Telyt-R 560/5.6 I tried to "grip" right where it says "glass" (but with shade not extended) but I could not move anything...tried to unscrew where I placed the question mark, but could not... I can see a ring right in front of the glass, which seems like a spacer to protect glass if filter is used..? The glass is fantastic, because it has pretty much never been cleaned, just protected and rarely used... tobey bilek - thanks for adapter info - will google right now... the thing with this particular lens is that it focuses well beyond infinity, so adapter ring wouldn't need to be so thin - but the demand for such an adapter would be incredibly small...! (I guess...) Quote Link to post Share on other sites More sharing options...
gunnarinla Posted August 12, 2009 Author Share #10 Posted August 12, 2009 ("quick reply" doesn't seem to work on Safari browser?) In see that the url that I pasted got "translated" to a link - i did not paste that...hope it works- but will try again to paste actual url - - -> http://www.pixoasis.com/gallery/view_photo.php?set_albumName=album02&id=560_copy&from_email=yes&from_email=yes Quote Link to post Share on other sites More sharing options...
wildlightphoto Posted August 13, 2009 Share #11 Posted August 13, 2009 Replace the R tube with a M or visoflex tube which is shorter and add the CameraQuest Leica/Nikon adapter. It will space to perfect focus. The lens in question is the f/5.6 which fits on the Televit focus grip. There are very few Visoflex-mount Televit grips. There are problems fitting a leitax converter on the f/6.8 Telyt's mount tube because of the Leicaflex SL nul cam. I don't recall if the Televit-R has this nul cam, if not the conversion would be simple. Quote Link to post Share on other sites More sharing options...
gunnarinla Posted August 14, 2009 Author Share #12 Posted August 14, 2009 Tried to find what the "nul cam" was...on this lens there is no cam - just the mount...so replacing with Nikon (mount) should be easy... (I tried my links here...first try brought up the log-in page with name and password filled in...not too cool...after that it worked nominally...wonder what happened to others...is there a provision for deleting posts here...?) ...turns out I had saved links for CameraQuest and Leitax...CameraQuest is not far from where I am.... Quote Link to post Share on other sites More sharing options...
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