SUMMICRON-R 2/90

This is a record of using the LEICA R mount,SUMMICRON-M 90mm F2 with a Leica digital camera.

Table of contents

Gallery
Impression
Lens specification
Reference links

Gallery
LEICA SUMMICRON-R 90mm F2 Photo Example

Impression
The R-type Summicron 90mm is a relatively common lens in the used market and is not rare.
As proven by the fact that the lens has been produced in this form for a long time, it is a lens that can be used with confidence for its gentle bokeh and consistent image rendering.
At maximum aperture, the lens is a little slower than the Apo Summicron, but this is acceptable if you consider it to be a feature of the lens.
Unfortunately, the late model R-type Summicron I own is a 3-CAM and not a ROM.
I have seen the ROM version of the Type R Elmarit 90mm in the used market, but I have never seen the ROM version of the Type R Summicron 90mm.
The lens has a wide image circle and is 100% usable at 3:2 cropping on the X2D’s digital medium format 44 x 33 mm sensor. The wide image circle, which exceeds that of a 35mm sensor, is a luxury of older lenses.

Like the R-type Apo-Summicron, the M-type has a minimum focusing distance of 1m, but the R-type has a reduced minimum focusing distance of 0.7m, which I consider an advantage.

Specification
A medium telephoto lens for the Leica R. This long-lived lens was produced for 25 years while changing its external shape until it was replaced by the Apo Summicron.
The R-type Summicron 90mm has a 4-group 5-element lens configuration with the second and third elements pasted together, and the same lens configuration has been used since its initial release, even though the lens barrel appearance has changed.
The M-type Summicron 90mm has had almost the same lens configuration as the R-type lens introduced here since the third generation of the M-type Summicron 90mm from 1980 onward.
Prior to that, the M-type Summicron 90mm had a 5-group, 6-element lens construction, which is a larger number of lens elements than today’s models.

Item	Value	note
focal length(mm)	90
Maximum aperture	2
Minimum aperture	16
Leaf blade	8
Lens configuration	4groups 5elements
Minimum distance(m)	0.7
Lens length(mm)	61.4	Distance from mount flange
Lens max diameter(mm)	69
Filter diameter(mm)	55
Weight(g)	522