Summicron 35 7 element - blades visible wide open?

[orangegoat]

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Hello, I recently acquired the 7-element 35mm Summicron-M (I guess the third version? Before the ASPH). It looks very nice but I notice that when set to wide open, I can still see the iris blades edging into what is normally a perfectly open circle in every other lens I've ever seen. I'm wondering if this is normal. I googled and found this old thread:

https://www.getdpi.com/forum/index.php?threads/35mm-summicron-pre-asph-wide-open-aperture-blades.35342/

The topic is debated, opinions appear to differ, and the image links seem to be dead. Can anyone here check theirs and see what they see? 

Thanks in advance.

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[wizard]

vor 2 Minuten schrieb orangegoat:

Can anyone here check theirs and see what they see? 

My own copy, a late German made one, is just like yours. BTW, this 7-element version is usually called the Summicron 35 v4 (last one before the asph). I have never seen any copy of that lens where the aperture blades were not visible at f2. So everything is just fine with your lens.

Andy

[orangegoat]

Ah, very good to know. Thanks for helping. 

[a.noctilux]

I guess that lens is

a real f/1.8 in 😉...disguise.

I have a doubt but every 35 Cron IV lens I have (ten ? ) or came across is like this.

[lct]

German made 35/2 v4 #3553*** 6-bit coded by Leica here. Looks the same as the OP's at f/2 but the aperture ring rotates slightly past the f2 clickstop, which makes blades barely visible then.

[Alberti]

I also had that ‘capability to rotate past F2.0’ in my Leitz Wetzlar 50mm Summicron v3. Then the last visible edges blades would disappear too. Interesting. 

 

Edited June 9, 2022 by Alberti