Coding Lens.

[Robinyuill]

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Hi there. Have a 15mm Voigtlander (screw fit) and I have an adapter ring, 28/90 leica, I am going to mill out and code. I have the Leica M codes list and I believe it should be coded as a WATE. The question is do I need to mill out all the indents and colour them all black and white or just the single black one? I have the code as 010000 = white.black.wh.wh.wh.wh. Any knowledge out there from someone? Regards. Robin.

[Johnny_Johnson]

You only need to mill the slots that are to be coded black.

 

Later,

Johnny

[zombii]

I have a M mount CV 15mm and when I tried to code it as a WATE, it wouldn't take it. Ended up coding it as a 21mm.

[epand56]

Zombii, my M mount 15 is coded as WATE and works very well. Any time I mount the lens it asks me whether I want the 16, 18 or 21 code.

You just have to check the black dot is perfectly in its place.

[bocaburger]

Ditto here, single black recess milled into an older Leitz 9cm adapter, brings up the WATE focal-length choice menu (I call it the WAIT menu ) each time. I use the 16mm setting.

 

the M9 doesn't differentiate between the 3 focal lengths so there's no pop-up menu. If you want to put the focal length on the INFO screen (and in EXIF) you have to key it in manually. And I find that the manual coding for the pre-ASPH 21 Elmarit works much better in the M9 than the WATE coding. At f/5.6 (my fixed shooting aperture with the 15) and ISO 160 I don't seem to need Cornerfix.

[DavidStone]

I tried this with the M-mount 15mm, which has a groove that can be used for coding. Very easily done. I used the code for the WATE, which the camera accepted, chose 16mm, no problem, but the result was hopelessly under-corrected. So I use Cornerfix, which is less convenient, but very accurate.

 

Why it didn't work I have no idea.

 

David

[Robinyuill]

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Thanks for the info. I will be trying to mill the lens mount next week so here's hoping! Will see what happens. Regards... Robin.

[menos I M6]

I tried this with the M-mount 15mm, which has a groove that can be used for coding. Very easily done. I used the code for the WATE, which the camera accepted, chose 16mm, no problem, but the result was hopelessly under-corrected. So I use Cornerfix, which is less convenient, but very accurate.

 

Why it didn't work I have no idea.

 

David

 

I have a 15mm M-Mount Heliar as well.

Mine has no grove for coding

 

Can somebody, preferably with an coded M-mount Heliar make a photo of the mount (90º aligned to the mount), to positively identify the position of the one black mark?

 

I would like, to experiment with this a bit on the M8.2.

[PasMichiel]

Just a single dot will do. It's the Tri-Elmar-M 16-18-21mm f/4 code, so the camera asks 16, 18 or 21mm. Choose for 16 and it works fine.

 

Don't forget to choose Lens detection to On (without UV/IR). I do not have a filter for this lens (I don't think there is one for this lens)

[Robinyuill]

Thanks for the info. I have tried marking the lens mount with a black felt tip pen prior to me milling and filling in with black paint and I am certain its in the correct place but can not see any effect on the image and the camera gives no lens info in the exif as to type of lens identified. Am I doing anything wrong at this point? Is the sensor sensitive to the type of "black" mark on the lens mount? Any suggestions thanks. Robin.

[Robinyuill]

HI there. Quick update. I milled the mount and filled the indent with model paint and it seems to have worked. It comes up as an 18mm lens on the info screen and there is some better difference in the colour cast. Thanks again for the previous help. Regards.... Robin.

[menos I M6]

@ PasMichiel - mine looks different - this is the screw mount version with M adapter, isn't it?

[PasMichiel]

@ PasMichiel - mine looks different - this is the screw mount version with M adapter, isn't it?

 

yes indeed.

[menos I M6]

yes indeed.

 

So folks - please show your coded M-mount Heliars please ;-)