6 Bit coding a Voigtlander 50mm f/2 Lanthar

[RonM]

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I may be experiencing the same problem as I found in this post:

I am using a template for coding my 50mm f/2 Lanthar as the "Leica APO Summicron M 50mm vI,"  ( code is 101001)  but the camera is showing it as a "1.4 50mm."  I have an ultrs fine  black paint Sharpie coming in a few days, (currently using an ultra  fine tip Milwaukee black ink marker) but wonder if  I might be  missing something besides the marking quality.   Does anyone with the Voigt. lens know what the camera should display?   I have tried erasing and re-doing the marks, and it always comes up the same.    Any other suggestions??

Edited July 23 by RonM

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[jgeenen]

The Summilux Code (101000) is very close to the APO Summicron Code. You should make the last dot (….1) a bit bigger (to the left and/or right). To my experience, the code reader is very sensitive to both dimension and blackness of a marking.

[jgeenen]

My Coding looks like this - ugly but effective.

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[robbie3]

Hi RonM,

you could try some uni-ball Super Ink Marker Permanent pens instead of Sharpies. 

I bought some after seeing them recommended for 6-bit coding on Fred Miranda's site.

I went over the coding on two lenses, one with a problem identical to yours, and the problems were immediately fixed.

Not expensive at less than £5 for a pack of 2 pens.

I'd also recommend the Akara Labs template.

Best regards.

Robbie.

[jgeenen]

vor 6 Stunden schrieb robbie3:

you could try some uni-ball Super Ink Marker Permanent pens instead of Sharpies.

Yes, I found the Uni-Ball Ink Marker Permanent working best, followed by the Sharpie and on third Edding 3000 permanent. I guess it has to do with the type and density of dyes used. Edding for example often requires two or more layers of ink (best to dab them otherwise you wipe off the already applied layer8. Btw. When the code is recognized, the camera shows 2/50 - the „APO … etc.“ shows up in Lightroom.

[RonM]

PROBLEM SOLVED!

Jgeenen, thanks for the suggestion to make the last mark a bit wider; that did the trick, and now I am seeing "f/2 50mm" and the info in PhotoShop's  'Lens Correction filter'  is correct!    Your coding looks fine, and the main thing is that it is working and looks fine to the sensors.    Thanks for your help.

Robbie, I have a paint pen on order, which should be blacker and more permanent.   I will look into the Akara template; thanks for that info.

I will also look into the uni-ball Super Ink Marker Permanent pen, since another Voigt lens (21mm)  is on the way, and will need coding.

Ron