Leica CL vf window

[crow]

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Which is the degree of magnification should an optometrist was to build me one(0.60)?

The viewfinder outer back window, where the eye rests, is missing.

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[Michael Geschlecht]

Hello crow,

0.6X is correct.

The Leitz CL takes diopters in the series 14081.

This is NOT the same series as the "M" camera 14061 diopters.

Best Regards,

Michael

[crow]

Thanks Michael.

So it's just a transparent material with a x0.60 magnification, plastic, or glass, that's all(?).

 

[crow]

Or is it a reverse Galilean type with a x0.60 magnification?

[Michael Geschlecht]

13 hours ago, crow said:

Thanks Michael.

So it's just a transparent material with a x0.60 magnification, plastic, or glass, that's all(?).

 

 

12 hours ago, crow said:

Or is it a reverse Galilean type with a x0.60 magnification?

Hello crow,

I don't know. You might ask the people in Wetzlar.

Best Regards,

Michael

 

[jerzy]

as I may see you will need not only the lens but as well mount for it, like pictured below. Maybe it would be cheaper to ask for example DAG (in US) or other repair shops if they have it as spare part. As far as I know when replacing top cover it was shipped from Leica together with eyelet.

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[crow]

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I see. Thank you Jerzy. 

Are you implying that the inner, secondary, smaller box, on which the glass is mounted, holds it in place?

You see there is a concave cavity, all around the perimeter of the opening you see in the picture. The way I was thinking about it was to just mount the glass into the concave groove. You think this is too little of a solution? 

[jerzy]

I am afraid that I do not fully understand what you mean. Maybe these 2 photos will clarify a bit.
Marked surface is a mask only, there is no lens in there. Behind this mask there is beam splitter and then front lens. And in top cover, in front there is plain, protecting glas (not shown on photos below)

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Holder of the lens in eyelet is made from black plastic and has a special, curved form to accomodate to the curved top cover. Photo below show eyelet fixed in top cover.

Possibly, if you will have squared lens made you may fix it directly on the mask, but then, because of different distance between front and rear lens the focal length of rear length may be different then original Leica/Minolta. It might be worth to check with DAG (or other repair shop) for original spare part.

Edited October 23, 2022 by jerzy

[crow]

OK.

Thank you Jerzy. By mask you mean the metal casing. I thought the lens fits exactly in the casing, not further inside or outside. So, the distance between the beam splitter and the glass in mom's is exactly the same, equals, that between the splitter and casing. 

The way it looks, with the frame you posted looks like the distance between splitter and glass lens is longer than splitter and camera black metal casing.