Replacement flange to enable coding a 90mm lens

[terrycym]

Advertisement (gone after registration)

Hello,

 

Has anybody bought and tried one of these?

6 Bit Flange Adapter Type II for Leica M8 M9 Lens 28mm 90mm | eBay

I have a 90mm f2.8 Elamarit M - the one with the retractable lens hood.

I noticed that they do replacement flanges for a Zeiss ZM 35mm f2 Biogon which I also have..

 

Thanks

Terry

[kokoshawnuff]

Here's a post about it, the writer of the artical had great success:

 

Converting to a Coded M Lens Mount | La Vida Leica!

[Advertisement]

The Leica Q3 is available for pre-order at B&H Photo Video and Adorama

[terrycym]

Here's a post about it, the writer of the artical had great success:

 

Converting to a Coded M Lens Mount | La Vida Leica!

 

Thanks for the link. Anybody other than "Double Negative" tried it.

[farnz]

Yes I'm using a few of them, even one on my Noctilux, and they're very good. You just have to follow Jinfinance's instructions to make sure you get the right one for your lens.

 

I'm also using one on my 90 f/2 APO-Summicron-M asph, which has the thinnest depth of focus of all of the M lenses (perhaps apart from the 0.95 Noctilux) and I haven't noticed focus being off wide open, close up so his tolerances must be pretty good (or I got lucky:p)

 

Pete.

[terrycym]

Thanks for the feedback. I was worried about tolerances and focus accuracy but you've allayed them.

Did you haven any issues unscrewing the original flange?

What screwdriver did you use?

I want to make sure I dom't damage them.

[farnz]

I bought a crosspoint 00 cheaply off the internet and had no problem unscrewing or re-screwing the flanges. I treated them like car wheels and tightened diagonally opposite screws to make sure the torque load was evenly distributed across the flanges and they were fine.

 

Pete.

[ivohula]

Advertisement (gone after registration)

I was looking at the mounts available and I did not see any for a Voigtlander Heliar Ultra Wide-Angle 12mm f/5.6 Lens. Does anyone have any experience replacing this flange? Is it too early as these flanges just became available? Is this 12mm lens the same mount as some other lens that is already available? Looking for your comments and info. Thanks. :o

[farnz]

I use a Jinfinance LTM-M adaptor with coding pits cut on my Voigtlander 15/4.5 v1 but I don't have its 12 mm sister so I regret that I can't help except to say that if your 12/5.6 is LTM then I see no reason why it wouldn't work for your too.

 

(I should perhaps declare at this point that I have no connection to Jinfinance or the business; I am no more than a satisfied customer.)

 

Pete.

[DigitalHeMan]

I am looking for a similar flange. Does anyone know what is meant by 'type II' screws? How would I know whether my lens is type II or something else? I have a 90mm Summicron, Canadian version.....

[tobey bilek]

Type 2 have no screws where the the coding goes. Type 1 has a screw in the middle of the pits.

Type 1 replacements are sent with only 5 holes instead of 6 so the pits can be placed.

There is a diagram on his website.

 

I just did my 12 & 15 mm screw mounts with a screw to bayonet adapter with pits added from Jinfinance. Be sure to order the 28/90 so you can code it as a 21 pre ASPH. The frames must match the coding for the camera to recognize it.

 

If you have bayonet mount 12 or 15, the flanges probably will not interchange.

 

The big issue is his replacements are .040 to .0405" thick. Leica flanges are usually .039 and few .0395". The .001 gives you front focus, so you need to measure and grind down. I had to repair every one I bought. It is a simple grind on adhesive abrasive sheet on glass or plastic flat. Rotate 45 deg with each stroke to keep things even. Borrow or buy a micrometer and check all the way around. I had one that was not even.

I did not figure the thickness problem untill I saw the from focus on lenses that were previously ok. Then I started measuring.

 

See that your lens focuses before you order flanges. If it is older it may or may not need recalibration. Adding a new flange will not solve the problem.

 

The site linked is run by a lucky fellow or one who is not critical. Probably lucky he got a match. I did not a single easy swap except for the adapter types..

 

.

Edited March 30, 2013 by tobey bilek

[lawman]

What type of screwdrivers are people using to remove the crosspoint screws on the original Leica flanges? I have seen postings stating that you must use a "crosspoint" driver which is not the same as a Phillips driver or a JIS driver. Is this true and if so, where can we purchase a driver to do it? I have searched the net without success.

 

Also, when filling in the pits on the new flanges, is it better to use a flat or glossy type of paint?

[farnz]

If I recall correctly I searched the online website with "crosspoint 00" but it's some time ago and my memory might be deceiving me. I have the screwdriver in front of me, its plastic stock is black with red ends, the driver is about 4 inches long including the blade, written on one side of the stock is "Wiha PicoFinish 261 P Germany", on the other side is "4 010995 005122", and on the top "PH00x40".

 

Pete.

[250swb]

"PH00x40".

 

Pete.

 

That will be PH for Phillips, 00 for size, x40 for length.

 

Steve

[farnz]

That will be PH for Phillips, 00 for size, x40 for length.

Yes, the length of the blade is 40 mm.

 

Pete.