Kipon Alpa to Leica L39 adapter issue

[supremehut]

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3 minutes ago, Pyrogallol said:

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The canon LTM is best for the money, nice collection

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[Cervi-Giardini]

On 3/19/2021 at 6:49 PM, romualdo said:

looks like I just solved the problem - I needed to unscrew the ring all the way to the tip of the helicoid - now matching perfectly (rangefinder with EVF) plus reaching infinity

Hi, romualdo
Will you please teach me how to do that in detail?
I'm annoyed by KIPON adapter, too.

Edited July 8, 2021 by Cervi-Giardini

[romualdo]

Cervi

see my pics below - there is a ring (adjustment) inside the helicoid with two notches, 180 degrees apart - this ring was way too far down inside the helicoid - I had to screw it anticlockwise (so it would rise to just above the level of the top of the helicoid - see pics) - a fine screwdriver placed into one of the notches will allow you to move the ring. With fine adjustment it's trial & error, screwing ring clockwise or anticlockwise in very small movements then testing for attainment of infinity with the rangefinder. Ideally using a digital camera with an EVF (Electronic viewfinder) & comparing the focus with the viewfinder screen to the rangefinder is more accurate IMHO than trying to tweak it with just a film camera. Hope this helps. Once you are happy with the ring's position, use a marker pen to show the position at a notch (see pic) - I check that before use to see if there has been any movement during storage - hasn't seemed to move at all since I did the final adjustment, Cheers Stephen

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[Cervi-Giardini]

Thank you, Stephen!!
I appreciated so much.  Very easy to understand and I was able to solve the problem quickly.

[romualdo]

11 hours ago, Cervi-Giardini said:

Thank you, Stephen!!
I appreciated so much.  Very easy to understand and I was able to solve the problem quickly.

Glad you were able to follow my directions

By the way, what lenses/cameras are you using the kipon adapter with?

[Alberti]

Thanks for the pictures.

Quote

there is a ring (adjustment) inside the helicoid with two notches, 180 degrees apart - this ring was way too far down inside the helicoid - I had to screw it anticlockwise 

I attached my ALPA 50mm macro to the adapter, and yes it couples to the RF but it (also) has severe backfocus. The patch goes 'beyond infinity'. 

My adapter on the inside looks different. I do not see those two notches high up on my KIPON adapter. There is a ring very deep inside that rotates freely but it feels not attached to anything. It turns so easily. But indeed: it looks as if it moves the RF-ring outward, a space apears. 

I think it is best to have a repairman set it and lock it with Locktite (the red stuff). 

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