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40 mm on M9?


Anguish

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I used the 40mm Cron on my M9 for a while. I had filed the mount for the 35mm framelines to come up. It is a great match for these framelines. Quality wise a bit soft wide open but excellent stopped down. In the end, I bought a 35mm Cron IV because I like much more the ergonomics, the 40mm being almost too tiny for my hands.

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I have a 40mm Nokton and have filed the mount to bring up the 35mm framelines on the M9. Its a good match, the 35mm frame is pretty accurate, and its easy to frame just inside the lines, whereas my 35mm Summicron I have to frame just outside the lines.

 

Steve

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I too use the 40mm Summicron on my M9. I found the framing to be much more accurate than with the 35mm. The 40mm gives you slightly less than what's framed in the viewfinder, especially at the top, but it's easier to compensate for that than with the 35mm where you get so much more than what you see that you have to crop considerably to match what you intended. For most people that may not be a problem but I make very large prints and need to use the full frame or resolution suffers.

 

Filing down the flange that triggers the 50mm frame lines is very easy; with the flange corner removed, the default 35mm lines show up. There are detailed photographs in this post on Photo.net:

 

How to modify a 40mm Summicron-C (with photos) - Photo.net Leica and Rangefinders Forum

 

Andrew Borowiec

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i've been using it when i want the most compact m9.

i spend quite some time skiing in the swiss alps, and when i need small the 40 rokkor-c is pretty perfect. i haven't altered the framelines, for some reason it's very easy for me to think in terms of the lens and what i get.

the 40 C is very fun to use, and it's cheap compared to most other leica lenses.

 

best

 

cornelius

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I can't agree with thepost above that you have to stop the 40 Summicron for it to be sharp. Mine is impressively sharp at f2. What it's not when wide open is 'contrasty.' Whether or not you like this is a matter of taste; I especially like sharpness without a lot of contrast.

 

I'm not sure, however, that the color rendition of this little Summicron is up to the standard of the 35s. But again, I'm willing to live with this.

 

Kirk

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The Summicron-C 40/2 is very close to the Summicron-M 35/2 IV as far as sharpness, bokeh and color rendition. Both flare a bit and are somewhat softer at f/2 than current Summilux and Summicron 35mm but they match very well Mandler lenses of same vintage like the Summicron 50/2 or the 'thin' Tele-Elmarit 90/2.8.

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Filed the mount??

 

Removed the mount first and then screwed it back on, in order not to have metal particles (even) near the back lens or the helicoid?

 

So a little bokeh king for 110-150€?

There are probably more of those than CL/CLE bodies still around.

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I can't agree with thepost above that you have to stop the 40 Summicron for it to be sharp. Mine is impressively sharp at f2. What it's not when wide open is 'contrasty.' Whether or not you like this is a matter of taste; I especially like sharpness without a lot of contrast.

 

Mine is very sharp as well at f2. It is an helluva lens and not only for the price.

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