Specifications#
Equivalent focal length on different cameras#
Field of view and depth-of-field equivalence when this lens is used on bodies with different sensor sizes (natively or via an adapter).
| Camera format | At 75 mm | Equiv. aperture (DoF) |
|---|---|---|
| Full frame | 75 mm · 32° | f/2.0 |
| APS-C | 112 mm · 21° | f/3.0 |
| APS-C (Canon) | 120 mm · 20° | f/3.2 |
| Micro Four Thirds | 150 mm · 16° | f/4.0 |
Depth of field & background blur#
Computed on its native Full frame format (CoC 30 µm). “Blur @2 m” is the size of an out-of-focus point at infinity, as a percentage of frame width, with the subject at 2 m — a simple bokeh index. Full table: 85 mm f/2 on full frame.
| Focal | Aperture | at 1 m | at 2 m | at 5 m | at 10 m | Hyperfocal | Blur @2 m |
|---|---|---|---|---|---|---|---|
| 75 mm | f/2 | 2.0 cm | 8.2 cm | 52.7 cm | 2.14 m | 93.8 m | 4.1% |
| 75 mm | f/4 | 3.9 cm | 16.5 cm | 1.06 m | 4.43 m | 47.0 m | 2.0% |
| 75 mm | f/8 | 7.9 cm | 33.1 cm | 2.20 m | 10.3 m | 23.5 m | 1.0% |
Handheld & night-sky limits#
NPF assumes typical 20–24 MP sensors (≈6 µm pixels on full frame, ≈3.9 µm on APS-C, ≈3.3 µm on Micro Four Thirds).
| Body | Min. handheld shutter (longest focal) | 500 rule at 75 mm | NPF at 75 mm, f/2 |
|---|---|---|---|
| Full frame | 1/80 s | 7 s | 3 s |
| APS-C | 1/125 s | 4 s | 2 s |
| APS-C (Canon) | 1/125 s | 4 s | 2 s |
| Micro Four Thirds | 1/160 s | 3 s | 2 s |
Compatible cameras#
Bodies in our database with a native Leica M mount.
- Leica M11 2022
- Leica M10 Monochrom 2020
- Leica M10-R 2020
- Leica M10-D 2018
- Leica M10-P 2018
- Leica M10 2017
- Leica M-D (Typ 262) 2016
- Leica M (Typ 262) 2015
- Leica M-E 2012
- Leica M Monochrom 2012
- Leica M9 2009
- Leica M8 2006
- Leica M7 2002
- Leica M6 1984
- Olympus OM-3 1983
- Olympus OM-4 1983
- Olympus OM-1 1972
- Leica M4 1966
- Canon 7 1961
- Leica M1 1959
- Canon P 1959
- Leica M2 1958
- Leica M3 1954
- Epson R-D1
- Leica M EV1
- Leica M11 Monochrom
- Leica M11-D
- Leica M11-P
Adapt it to other systems#
Similar lenses#
- Leica Elmarit-M 1:2.8/90 f/2.8
Frequently asked questions#
Is the Leica APO-Summicron-M 1:2/75 Asph. (11673/11701) full frame?
Yes — it covers the full 36 × 24 mm frame.
What is the Leica APO-Summicron-M 1:2/75 Asph. (11673/11701) equivalent to on APS-C?
On a 1.5× APS-C body it frames like 112 mm, and like 120 mm on Canon APS-C.
What is the Leica APO-Summicron-M 1:2/75 Asph. (11673/11701) good for?
As a portrait / short tele prime it suits head-and-shoulders portraits with flattering perspective and creamy backgrounds.
Sources & licences#
- Lensfun lens database — CC BY-SA 3.0
Last updated October 03, 2026 · How we calculate · Sources