§ 03 Head to head

Carl Zeiss Planar T* 50 mm f/2 ZM vs Leica APO-Summicron-M 50mm f/2 ASPH.

Zeiss 50mm f/2 is 70 g lighter. Leica 50mm f/2 is 21 mm shorter.

Both lenses are made for the Leica M mount: the Carl Zeiss Planar T* 50 mm f/2 ZM is a 50mm f/2 prime, and the Leica APO-Summicron-M 50mm f/2 ASPH. is a 50mm f/2 prime. On paper the Leica APO-Summicron-M 50mm f/2 ASPH. comes out ahead, 3 advantages to 1, but which one suits you depends on what you shoot.

01

Key differences

From manufacturer specifications

Why is the Carl Zeiss Planar T* 50 mm f/2 ZM better than the Leica APO-Summicron-M 50mm f/2 ASPH.?

  • 70 g lighter (230 g vs 300 g)

Why is the Leica APO-Summicron-M 50mm f/2 ASPH. better than the Carl Zeiss Planar T* 50 mm f/2 ZM?

  • 21 mm shorter (47 mm vs 68 mm long)
  • Smaller filter thread (39 mm vs 43 mm)
  • Newer design (2012 vs 2004)
02

Which should you buy?

By use
  • portrait For portrait photography, the Carl Zeiss Planar T* 50 mm f/2 ZM has the edge: it is 70 g lighter to carry.
03

Specification

17 rows · better value flagged ◆
SpecificationCarl Zeiss Planar T* 50 mm f/2 ZMLeica APO-Summicron-M 50mm f/2 ASPH.
Focal length50mm 50mm
Maximum aperturef/2 f/2
Minimum aperturef/22 f/16
Lens typePrime lens Standard prime lens
FormatFull frame Full Frame
Weight230 g (8.11 oz) ◆300 g (10.6 oz)
Dimensions52 x 68 mm 53 mm (diameter) x 47 mm (length)
Minimum focusing distance0.7 m (27.56 inches) 0.7 m (2.3 ft)
Maximum magnification—Not specified
Image stabilizationNo No
Weather sealing—No
Aperture ringYes Yes
Aperture blades10 Not specified
Optical construction6 elements in 4 groups 8 elements in 5 groups
Filter size43 mm 39 mm ◆
Lens mountLeica M Leica M
Released2004 2012
04

Size

Drawn to relative scale
  • A · Carl
  • B · Leica
  • 68 × 52 mm
  • 47 × 53 mm

The Carl Zeiss Planar T* 50 mm f/2 ZM is 21 mm longer and 70 g lighter than the Leica APO-Summicron-M 50mm f/2 ASPH..

05

Sample frames

Shot on each lens

Carl Zeiss Planar T* 50 mm f/2 ZM

The Windmills of Your Mind
The Windmills of Your Mind by Man with Red Eyes
Un assaggio di Giappone
Un assaggio di Giappone by giovannighidoni
Capture One Catalog10600
Capture One Catalog10600 by mango_cheungfun
Steep
Steep by RunnyTokyo

Leica APO-Summicron-M 50mm f/2 ASPH.

Rejas
Rejas by jlben Juan Leon
Rainbow in Motion
Rainbow in Motion by කේදාර KhE
by matías.elgart
Watchful at Pride
Watchful at Pride by කේදාර KhE
06

Video reviews

4 on YouTube
Video thumbnail for Carl Zeiss Planar T* 50 mm f/2 ZM review 1
Video thumbnail for Carl Zeiss Planar T* 50 mm f/2 ZM review 2
Video thumbnail for Leica APO-Summicron-M 50mm f/2 ASPH. review 1
Video thumbnail for Leica APO-Summicron-M 50mm f/2 ASPH. review 2
07

Questions

Which is lighter, the Carl Zeiss Planar T* 50 mm f/2 ZM or the Leica APO-Summicron-M 50mm f/2 ASPH.?
The Carl Zeiss Planar T* 50 mm f/2 ZM weighs 230 g, 70 g less than the Leica APO-Summicron-M 50mm f/2 ASPH. (300 g).
Do the Carl Zeiss Planar T* 50 mm f/2 ZM and the Leica APO-Summicron-M 50mm f/2 ASPH. have image stabilization?
No, neither lens has optical image stabilization; rely on in-body stabilization if your camera has it.
Is the Carl Zeiss Planar T* 50 mm f/2 ZM or the Leica APO-Summicron-M 50mm f/2 ASPH. better for portrait photography?
For portrait photography, the Carl Zeiss Planar T* 50 mm f/2 ZM has the edge: it is 70 g lighter to carry.
08

Other comparisons