Self Coding...I'm stuck

[grdglass]

I've had success self coding but am stuck with one lens.

It's an old Canon 28/2.8 that Sean Reid wrote to code as a 28 Cron ASPH. I have several old Leitz full rim adapters that John Milich has milled. I tried all the 9cm adapters I have and the M8 doesn't recognize the lens. I even tried to code as other 28mm lenses but no luck.

It occurred to me that perhaps I am using the wrong adapter size but I am pretty certain 9cm is correct.

Any ideas?

Sean Reid - if you read this, were you able to successfully code your Canon 28/2.8? It's a wonderful little lens and I hate to lose the functionality that the M8 can give.

Helene

[finkaudio]

Hi Helene,

the camera does not know what lens is screwed into the adapter . As long as the code is the correct one and fits to the selected frame, it should work with what ever lens is screwed on. The camera only needs the frame lever and the code. Î don't think Leica is using a special CANON detection in the new firmware

I can only see two reasons for your problem: The coding is not at the correct place (but I don't believe so ) or the paint you are using to fill the pads is not working.

What are you using to fill the holes?? And can you see the correct 28/90 frame lines with the adapter?

Best regards

Karl-Heinz

[Shootist]

What frame lines does the adapter bring up. There are switches the the frame line lever hits and if the lens/adapter is bringing up a different frame line, other then for a 28mm lens, the camera might not see/recognize/acknowledge the coding.

[jaapv]

Shiny paint gives problems semi-matte is best

[sean_reid]

Originally Posted by grdglass

I've had success self coding but am stuck with one lens.

It's an old Canon 28/2.8 that Sean Reid wrote to code as a 28 Cron ASPH. I have several old Leitz full rim adapters that John Milich has milled. I tried all the 9cm adapters I have and the M8 doesn't recognize the lens. I even tried to code as other 28mm lenses but no luck.

It occurred to me that perhaps I am using the wrong adapter size but I am pretty certain 9cm is correct.

Any ideas?

Sean Reid - if you read this, were you able to successfully code your Canon 28/2.8? It's a wonderful little lens and I hate to lose the functionality that the M8 can give.

See "Beating the Blues" for more.

Helene

Hi Helene,

Once you code the adapter it will work with any lens you screw into it. You need to be sure that you paint all of the wells in (black or white as needed). It won't work to just fill some in with a Sharpie. I use black or white enamel nail polish (normally sold to "Goths" <G>)

Yes, I have a coded adapter that I use with my Canon 28/2.8. With the new firmware, my new preferences are:

CV 28 Ultron - code as 28 Summicron Asph.
CV 28/3.5 or Canon 28/2.8 - code as 28 Summicron Asph.

This can change as the firmware changes.

BTW, I don't always read all the threads so if you have a thread that you want my advice in, mention that in the title.

Cheers,

Sean

[grdglass]

Thanks everybody -

I am using black and white enamel nail polish as Sean mentioned he uses. The polish worked with a CV lens on the first try so that is why I was stumped. I'll go buy some model paint that's less glossy and give that a try.

Are the Leica coded lenses matte or semi gloss?

Helene

[carstenw]

My 50 Lux Asph coding is quite matte. I would try something less glossy first. Also check that the metal (if you are not coding white) is shiny enough to act as white. Older metal can easily look a little matte, reflecting little light, and maybe acting as a black. Try to change one thing at a time, so that you know what the problem was when you finally get it working.

[fuchs]

Originally Posted by grdglass

Are the Leica coded lenses matte or semi gloss?

Helene

Hi Helene,
Leica original coding is completely matte. I would suggest Humbrol modelism enamel, the codes for the matt black and matt white are 'MATT 33' and 'MATT 34' respectively.

Best,

Ed

[sean_reid]

Hi Helene,

Just to be sure...are you certain you are using the right coding? If the other adapters work with the same paint it shouldn't be a question of glossy vs. matte. The others are all working correctly?

Cheers,

Sean

[grdglass]

Originally Posted by sean_reid

Hi Helene,

Just to be sure...are you certain you are using the right coding? If the other adapters work with the same paint it shouldn't be a question of glossy vs. matte. The others are all working correctly?

Cheers,

Sean

Sean,

The other works correctly, using glossy nail polish, for a CV lens.

I'm certain I was using the right code and I also tried another code. The camera didn't recognize either. Any 28mm should have been recognized, just give less than optimal results. I re-coded about 5-6 times, also using different 9cm adapters. I suspect that the bayonet mount on my M8 is tighter than most since I can never get a lens and adapter off in one action no matter how much I tighten the lens to the adapter. That makes me wonder if the tightness has something to do with the distance from the sensor on the body to the codes on the adapter. It shouldn't but I can't figure out why this is happening.

Anyway, I got some matte model paint late yesterday and will give that a try today.

Helene

[jaapv]

If it is that stiff are you sure it turns all the way?

[sean_reid]

Originally Posted by jaapv

If it is that stiff are you sure it turns all the way?

I was just thinking the same thing. The adapter may not be turning enough to click fully in position.

Cheers,

Sean

[grdglass]

The adapter clicks. I always make sure I hear it. It requires a snip of force; it doesn't ease into click position.

Helene

[jaapv]

It should work - John's adapters are flawless. I just coded one for my CV 15 - perfect first try...

[V64]

In my experience you have to use the right pen - the only one that worked for me (on an un-pocketed mount - ZM 50mm Planar) was an Edding 8400 CD marker - this is a pigmented ink (as opposed o a dye) and this may have something to with it.

David H

[jaapv]

This is not the sharpie method -these are milled adapters (with indentations)

[V64]

Originally Posted by jaapv

This is not the sharpie method -these are milled adapters (with indentations)

Indentations or not I think you still have to use the right ink - one which does not reflect IR radiation. With indents I have used ordinary 'Indian/China' drawing ink - again a pigmented ink

[grdglass]

I painted the adapter holes about an hour ago and will wait until its completely dry and looks matte before trying. I have a CV 15 on the way and it will be interesting to see what happens when I try to code an adapter for it. BTW, the other adapter I coded with glossy nail polish was 13.5cm and I got that one on the first try. Now, I am wondering if the 9cm is slightly different. It looks the same as the 13.5cm.

Helene

[jaapv]

No- the 135 is different from the 90. They will not accept the same codings. The 135/2.8 has a 90 mm mount, which is different from all other 135 lenses.

[jlm]

the difference between 9, 5 and 13.5 is the bayonet tab length that actuates the frame selector lever, and, on the M8 ,the microswitches, also used for lens detection. if you compare the square cut end of the bayonet tab nearest the lens locating notch you can see the small difference. the 9 has the most material there and therefore moves the lever farther, then the 5 then the 13.5