koray_p

<p>Fantastic resource on leather re-stitching Ferdi! Thanks for sharing!<br>

K.</p>

This is looks like a lens element separation. It happens

when the cement holding two optical elements start

giving up due to age or a shock. There are people

repairing that kind of problem, with varying success.

K.

Try rubbing the contacts on both end with a soft eraser.

That will remove any corrosion and contamination without

damaging the gold coating. Be careful on the door, the

hinge protrusion on the right is a structural part of

the door. It is made of the same pot metal like alloy

the door is cast from. Very brittle and easy to break

under undue stress.

Koray

Hi Dave,

This lens is the popular Summicron M 35 version IV, aka

bokeh king. You have the plastic inner shell variant

which is prone to catastrophic damage when subjected to

impact. The serial number should be hidden underneath

the aperture ring, for an example see the fifth photo in

ebay listing # 351675466619.

In good condition this lens goes for over $1500.

Good luck with your sale!

Koray

Bill, Michael, and John,

Thanks for your clear explanations, much appreciated. I

intend to use the lens on a mirrorless Sony NEX camera.

So I neither need rangefinder coupling, nor there is a

mirror clearance issue. I mentioned the 40mm Konica

Hexar for a donor focusing and diaphragm mechanism

because it is the same focal length (presumably), it is

cheap, and it can be used on Sony NEX with a cheap

adapter. I was just wondering if I could keep the

distance scale in usable condition (though, exact

accuracy is not that important except for infinity since

focusing will be live view). There are companies making

the Leica M conversion of that lens but price is not

attractive. Let's see, maybe I will sort it out cheaply.

Thanks again!

K.

<p><strong>A technical question:</strong> there is a direct relationship between the lens focal length and the total movement of the lens block when you change the focus from infinity to close-up. Is this relationship universal across all types of lenses?</p>

<p>For example can I use a 40mm Konica Hexar AR helicoid for a 40mm Leica Summarit removed from a Leica Minilux, and expect the meter scale show the correct relative distance?</p>

<p>Yes, I have a spare Minilux lens that I want to play with after some machining and adaptation. :-)</p>

<p>Thanks in advance!</p>

<p>Koray</p>

Any flash will do, just avoid weirdass Minolta/Sony ilSO

hotshoe flashes! :-)

By the way, thanks to Wikipedia, I just learned that

"The mechanical design of the accessory shoe now common

on most cameras dates back to 1913, when Oskar Barnack,

the inventor of the Leica, devised it for attaching an

accessory viewfinder."

K.

I would sell both while they have some value and immediately get a nice M2 with the quarter of my earnings.

K.

I would still both while they have some value and get a

nice M2 for the quarter of my earnings.

K.

Do they scratch the sensor, LCD,

and the finder as well?

Don't you love it when a lurker drops the bomb

and goes away, not to be seen again? Then it is

all assumptions and long futile discussions...

:-)

Chris, to be honest I was going to

make the very same remarks that Gus

has done, much earlier; but I

didn't have the guts since I am not

a professional Leica repair person.

I have successfully repaired many

photo gear for my personal use

before (including several fungus

infested Leica M lenses). Believe

me, it is not rocket science to

take things apart and put together.

Some hand skills, common sense, and

maybe printed guidance seems

enough. But I was never under the

impression that I could achieve

perfect and sustainable results within manufacturers' specifications.

Now, from my experience I can

easily tell one that the workbench

photos you provided do not give

much confidence.

Just my two cents.

K.

<p>Ha ha! Reminds me the <strong>green</strong> Canon T90 that I came across at a pawn shop web sales site. I made lots of research and no hints to its existence, except for a single reference at a forum. So I came to the conclusion that it was the rarest beast. I bought it and it turned out to be a very amateur paint job by a previous owner!<br>

I think this special FDn 50mm is the same thing. You can hardly see the brush strokes at the edges of the bottom silver/white ring. <br>

But who knows, maybe I am wrong? :-)<br>

Koray</p>

John, fantastic story! Thanks for sharing. :-)

Koray

John Layton , Sep 18, 2014; 07:13 a.m.

I purchased my first Leica-M (a beater M-2 with a couple of

beater-lenses) at age 14 with money I'd earned mowing

lawns during that summer.

...must have been helluva lawn and a looong summer!

K.

I once had a frozen M6 where the film advance lever

wouldn't budge. I thought: "Well it is probably some

debris in the gears, let's push more." The result:

stripped steel gears and a £350 bill.

The sad thing is, I am mechanically inclined with many

camera and lens repairs under my belt. I don't why I was

that stupid at that particular moment. :-)

K.

Jim, thanks for sharing such inspirational photos. You

motivated me to grab my M2 and dusty Summicrons and

Elmarits and go out!

K.

Nope, apparently "Leica M4 ‘Jewellery Ware’ repainted by

Master Painter Takahashi", who is retired now.

Price: $4250

http://www.japancamerahunter.com/current-sale-items/<div></div>

You have half the answer: yes it

might be your pinkie blocking the

RF patch window, or the notorious

M6 RF patch flare (due to the

position of your eye, or the bright

sky, or both in portrait mode).

You will get wiser, soon.

K.

Did this M2-6 come out of necessity or pleasure?

K.

Bill, your M2-6 is certainly intriguing. I was trying to

rationalise the thing, only until seeing the double

flash ports: which has now left me thinking what is

functional and what is just a decoration on this camera.

Puzzling but beautiful.

K.

James, there are no plastic parts in these lenses, it certainly looks like a metal

shaving. The coating on the glass elements are quite soft so if I were you I stop

operating the aperture and would definitely get it checked. I disassembled a DR few years

ago and I remember the distance between the aperture blades and the glass was very

little.

K.

Hurry Manuel, BBC tells that somebody has made $15K on one day with his Contax G2. Get

that one quickly while the price is still right! :-)

http://m.bbc.com/news/magazine-27769687

K.