Summicrom 40mm f2 VS. Voigtlander 40mm 1.2

[ferider]

Summilux 35/1.4 pre-asph:

40/1.4 Nokton:

Roland.

 

[pau3]

Roland, maybe there is a server problem, but your images are not showing.

Pau

 

[ferider]

Thanks Pau. Should be visible now. BTW, the lux is older than the Summicron v4. One might argue that both Nokton and Summicron v4 designs are derived from the 35 Summilux.

I would love to see a reference about the Nokton lead contents, and it changing over time.

Roland.

 

[rlouzan]

Yes, we know that. I don´t know where you got the Summilux diagram but it doesn´t look correct to me.

the lux is older than the Summicron v4. One might argue that both Nokton and Summicron v4 designs are derived from the 35 Summilux.

 

[rlouzan]

Could it be a diagram from S/N 2166702 point change?

 

[ferider]

Could it be a diagram from S/N 2166702 point change?

Possible. Check Puts' "Leica M-Lenses: Their Souls and Their Secrets". The basic element/group
configuration is identical to your reference (its first computation?) above.

In any case: do we have a Nokton/lead reference, please ?

Best,

Roland.

 

[Bavaricus]

Summilux 35/1.4 pre-asph:

Roland.

Allright! ...

 

[rlouzan]

I´m interested in the Lead reference too. From what I understand, the tabbed 50mm Summicron and the current 50 with built-in lens hood, have the same lens cut - but different glass type and MC.

Regards,
RLouzan

Possible. Check Puts' "Leica M-Lenses: Their Souls and Their Secrets". The basic element/group
configuration is identical to your reference (its first computation?) above.

In any case: do we have a Nokton/lead reference, please ?

Best,

Roland.

 

[rlouzan]

The 35mm Summilux-m pre-Asph is a 7 elements design. The difference in all this designs is in the rear cemented group.

Best,
RLouzan

Has to be: Summicron 35/2 pre-ASPH! The Summilux 35 pre-ASPH was a 8-element design, so is the new CV Nokton 35/1.4. The lens diagram looks quite equal - oni soit que mal y pense ...

 

[ferider]

Rlouzan,

I just checked Puts again (http://test.leicakijkers.nl/Downloads\Leica M-Lenses - Their Soul and Secrets_en.pdf).

He also has a diagram of the v4 cron. Seems like he uses the identical diagram for both, Summilux and Summicron, so maybe I based myself on an error in his book.

Be it as it is, I like my Nokton !

And thank you !

Roland.

PS: Rainer, have a look at Rlouzan's reference: http://www.flickr.com/photos/summicron/104232632/in/set-72057594070107293/.

 

[rlouzan]

Roland,

Maybe it´s not an error, they could have the same lens diagram after all.
The 40mm Nokton is a fantastic lens.

Best,
RLouzan