Leica APO-Summicron-M 35mm F2: Full technical Data

[Leon_B.]

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Here are the technical data for the new APO-Summicron-M 35mm. The Leica press release and Jonos review can be found here:

• New Leica APO-Summicron 35mm F2 for Leica M Cameras
• Review: The New Leica APO-Summicron-M 35mm F2 ASPH.

 

Lens	Leica APO-Summicron-M 1:2/35 ASPH.
View angle (diagonal/horizontal/vertical)
Full-frame (24 × 36 mm)	62.5°/53.6°/37.2°
for M8 (18 × 27 mm)	47.0°/40.0°/28.0°, equivalent focal length approx. 46.67 mm
Lens system
Number of lenses/assemblies	10/5
Number of aspherical surfaces	4
Position of the entrance pupil before the bayonet	13.8 mm
Focus range	0.3 m to infinity
Focusing
Scale	Combined scale meter (m)/foot (ft)
Smallest object field	Full-frame: 135 × 203 mm, M8: 101 × 152 mm
Largest scale	1:5,6
Aperture
Setting/Function	Lock blade, with half-increment lock settings
Smallest aperture	16
Number of aperture blades	11
Bayonet	Leica M bayonet with 6-bit encoding
Filter thread	E39
Lens hood	Screw-on
Dimensions
Length	approx. 40.9/49.3 mm (without/with lens hood)
Diameter	approx. 53 mm (without lens hood)

Technical Drawing / Lens Cut

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MFT Diagrams

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[FrozenInTime]

+ infinity vs close up MTF plots from the Peter Karbe talk/video on the lens

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[scott kirkpatrick]

A fresh batch of these have recently been shipped.  I was lucky and got one, so I am looking for the technical data to go with the lens, and it seems that none of Leica's websites has more than scattered examples of the old familiar data sheets.  Some Googling turns up a copy in Chinese, but English and German data sheets for this lens have vanished.  The Karbe data in the post above (from a talk in 2021) shows more than was ever available in an official leica datasheet.  Its message is that in the close focusing range, the character of the image changes significantly between f/2.0 and f/5.6. 

Good to know.  But have things changed during the long period when the lens was unobtainable?

[anickpick]

vor einer Stunde schrieb scott kirkpatrick:

but English and German data sheets for this lens have vanished

In German: Leica's website in Switzerland:

https://store.leica-camera.com/ch/de/FileDownload/downloadFile/orderNumber/11699?file=de/technical_data_files/DE_APO-Summicron_35_2.pdf

 

[scott kirkpatrick]

Thanks.  I can read that (a lot better than the Chinese edition).

[Newahvennick]

https://store.leica-camera.com/uk/en/shopware.php?sViewport=detail&sArticle=6594

[Newahvennick]

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Just now, Newahvennick said:

https://store.leica-camera.com/uk/en/shopware.php?sViewport=detail&sArticle=6594

This is in stock now

 

[pedaes]

27 minutes ago, Newahvennick said:

This is in stock now

x2, Not sure it is in stock. Clue is 'get it delivered home or to our store'. Call them if you are interested in buying.