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Tom Abrahamsson of RapidWinder.com It is almost never that an inventor improves on a Leica product so that it is better than the original Leica product. Tom holds that distinction with his RapidWinder for Leica M rangefinders -- a bottom mounting baseplate trigger advance. In addition Tom manufacturers other Leica accessories such as his very popular Soft Release and MiniSoftRelease shutter releases. Tom is well known as one of the true Leica rangefinder experts, even by Leica. IMPORTANT READ THIS: CWE Forum hosts have moderation powers within their forum. Please observe copyright laws by not copying and posting their material elsewhere without permission.

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Old 02-26-2012   #41
menos
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Hey Mike and Vick, I just wanted to thank you guys again for the quick help and clarification on the disassembly of the Summarit ;-)

I have finished the lens by Saturday morning and use it since then.

A few shots are in this thread:
http://www.rangefinderforum.com/foru...52#post1821194

Don't you Summarit shooters love that crazy background rendering ;-)


portrait - wild bokeh by teknopunk.com, on Flickr
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Old 03-09-2012   #42
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Originally Posted by [email protected] View Post
Brian, do you do coating as well, any chaps to recommend ? I finally got a very nice keeper but kept thinking that perhaps a modern coat could reduce the flare-y effect ?

cheers!
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Old 03-09-2012   #43
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Good work on the disassembly and reassembly. That sure is some interesting bokeh you got. Not sure coating will change that - bokeh is more an effect of spherical aberration and such.
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Old 03-21-2012   #44
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Stellar portrait, Dirk !!

Quote:
Originally Posted by menos View Post
Hey Mike and Vick, I just wanted to thank you guys again for the quick help and clarification on the disassembly of the Summarit ;-)

I have finished the lens by Saturday morning and use it since then.

A few shots are in this thread:
http://www.rangefinderforum.com/foru...52#post1821194

Don't you Summarit shooters love that crazy background rendering ;-)


portrait - wild bokeh by teknopunk.com, on Flickr
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Old 03-30-2012   #45
menos
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Vick and Gabor, thanks ;-)

I am using the Summarit now not as a daily shooter (too funky for that - hehe), but I love the days, when taking it out and enjoy it a little.





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Old 03-31-2012   #46
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Beautiful pictures, Dirk!

Erik.
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Old 03-31-2012   #47
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Stellar portrait, Dirk !!
+1! Love that OOF rendering!
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Old 03-31-2012   #48
menos
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Thanks Erik and Robert ;-)
I just love these tones from the old lenses - no new Leica lens does this anymore.
I think, the last lenses, to provide such rich tones are the Mandler designed pre ASPH lenses.

A pity, Leica doesn't seem to realize this.
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Old 11-01-2012   #49
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Sorry to drag up this topic again, and I know Brian isn't here to lend support, but maybe some of you fellows might know,

Yesterday I got my (3-knurled rings) Xenon lens. There appears to be quite some play in the lens housing (I'd guess it's close to 0.5mm). And it also front-focusses a little bit. (I have used my Epson R-D1 to verify this; focus set at 100cm it actually focusses at 90cm).

Now, I want to correct these problems and I've read the Summarit is supposed to be the same as the Xenon with coated lenses. Would the dissassembly processes mentioned above be the same?

Any particular tips on adjusting the focus and tightening up the lens unit to the mount?

Any help appreciated
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Old 11-01-2012   #50
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Rick, I never did a Xenon, so help is limited from my side, but posting some detailed photos of the lens, showing it's mechanics might give away some info, so some people can help out ;-)

Generally 0.5mm sounds like a lot of play.

Normally the play in such lenses is subject to either a loose focus mount to optical cell connection or simply slack between the helicoid sleeves, as the thick grease has dried out or in the case of play in the focus ring only sometimes a worn out connection between the follower of an inner helicoid sleeve and it's accompanying groove in the focus ring (often with common 35mm lens construction).
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Old 11-01-2012   #51
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Thanks Dirk,

I'll try and post some close-up photos of the lens later today.

In the mean time here is a similar one (though a "4-ring" lens instead of 3 like mine)


As I recall from fondling it yesterday the focus ring is connected to the mount without any noticable play, but I can wiggle the front half of the lens, including the aperture ring.
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Old 11-01-2012   #52
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Here is my Xenon





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Old 11-01-2012   #53
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Well.... had it apart except for the focusing mount and the rear lens element.
Cleaned oil off the aperture blades.
Reseated them (Darn that was annoying!), reseated the front lens unit.

I seem to have gotten rid of the front lens wobble, but it appears the entire lens unit turns freely inside the focus mount. No length-wise or sidewise play. Kind of annoying trying to change the aperture like this.
But it appears to have fixed the front-focus issue too.
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Old 11-01-2012   #54
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It looks indeed like a similar construction as the later Summarit with few differences.

If the one big screw, seen here on the focus ring is one of two screws 180º apart, these are the service screws, which just open a hole through which you fit a pin, to lock the outer and inner tube of the focus mount from turning, while you untwist the optics module.

On the Summarit, there are actually three set screws, placed still in the focus ring towards the front, which lock the entire unit of optics module and inner focus mount tube from turning round and round.

I cannot see them in your pictures.

As you describe it, your lens really suffered from a wrong assembly.
You have to search for a mechanism, that would lock the inner tube, into which you screwed in the optics module against turning.

It would likely be three set screws outside of the lens.
So that you don't have to mess with them - the screws in the mount have nothing to do with this function.

Just one wild guess:

If the aperture ring can be unscrewed to the front on the Xenon instead of to the back (as on the Summarit), these set screws might even be hidden UNDER the aperture ring.

Before WW2 some Leica lenses indeed had their aperture ring fixed like this - loose the pin screws of the aperture ring (careful, set aperture to a known position - wide open is good - and look for proper position, to mount/ unmount the ring, if you have to fully screw it off.
These rings run on a fine thread, which doesn't hurt, to be slightly greased after cleaning - careful, no grease into the ports for the aperture linkage.

Make some pictures in the process - always curious to see, how this and that lens is built ;-)
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Old 11-01-2012   #55
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Thanks Dirk,

There is only one service screw in the focus ring I'm afraid, and wasn't able to find the hole to insert the pin into.

I'll take it apart again this weekend and see about getting some more close-up pictures.
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Old 11-01-2012   #56
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you are all braver than i am when it comes to disassembling lenses, but here are my 2 cents re summarit:

my semi-bargain from the u.s. arrived with generous internal haze and multiple cleaning marks on the front element.

1) impossible to open the lens for cleaning - the front and rear were 'frozen' together. i used a few drops of light penetrating oil and let them work 24 hours. online, i found a set of two small wrenches with rubber straps (like oil filter wrenches) which gave me enough leverage to open the lens without damaging the lens outer surface.

2) at fototechnik reinhardt ([email protected]) for CLA, the front element was removed and sent to Kingsview Optical Ltd in the u.k. for polishing/recoating. herr reinhardt then reinstalled the front element, finished the CLA and returned a 'like-new' summarit to me.

good luck with your more ambitious projects.

rick
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Old 11-02-2012   #57
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Fixed the Xenon!

The three set screws that are supposed to keep the lens unit from turning were loose.
The trick for holding the rear lens element in place when you screw the rest back into it also works for the Xenon...except that the service openings are hidden under the knurled rings on the focus ring. This part apparently unscrews after you've removed that single set screw you see in the photo.

I took some photos of the operation. I'll share those tomorrow .
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Old 11-02-2012   #58
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Nice work Rick!
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Old 05-17-2014   #59
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This is called - summarit sidassembly - and that is what I wanted to do - in order to clean the internal lens surfaces.

Trying to separate out from the many posts the actual process - and actually do it - I found that you end up with simply - the optical unit - and the focus unit.

There are no instructions here for doing anything more.

If you go and look at the summilux info referred to it is not clear if the optical unit unscrews in the same way (that is the very first question asked in this post and is immediately answered with yes it DID - then we are told oh actually no it doesn't you need to use a trick (which you do..)

Then as I say nothing beyond that then we are off into discussing Xenons etc.

Would it be possible years on now for anyone who actually knows how to access the inner lens surfaces to show step by step how - clearly.

I have now put back together the optical and focussing units - and view it as a pointless exercise! I tried to 'unscrew' the front element and it does not move. It is suggested above we need a leather wrench? and pictures will be posted..

Please can anyone help and then post it in a separate link so that this confusing saga can then be avoided - as it leads nowhere!

Apologies if I missed something.. but it is still true that some clarity is needed!
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Old 05-17-2014   #60
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That should read 'disassembly!' - so that was a great start to my idea of a new clarity! haha
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Old 09-11-2014   #61
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Quote:
Originally Posted by yourdeelight View Post
........you end up with simply - the optical unit - and the focus unit.

There are no instructions here for doing anything more.
.......
you're right, the show must go on

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Old 12-13-2015   #62
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If you're missing the aperture click bearing on your Summarit, I found mine here:
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Last edited by Nick R. : 12-13-2015 at 16:48. Reason: url
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Old 12-13-2015   #63
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It measures .059 inches


The click stops:

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Old 05-17-2016   #64
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My lens got CLA

000037 by Tuấn Lê, on Flickr

000036 by Tuấn Lê, on Flickr

000041 by Tuấn Lê, on Flickr
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