Compare Panasonic DG 25-50mm F1.7 vs Leica Summilux-M 35mm F1.4 vs Leica Tri-Elmar-M 16-18-21mm F4
Construction
Aperture Blades
9 circular aperture diaphragms
9 blades, With click-stops, half values available
Form Factor
Wide-Angle Prime Lens
Ultra Wide-Angle Zoom Lens
Image Size
Full-frame
Full-Frame
Full-Frame
Lens Barrel
Physical aperture ring, Distance scale, DoF scale
Physical aperture ring, Distance scale, DoF scale
Lens Mount
Micro Four Thirds mount
Leica M-mount
Leica M-mount
Material
metal barrel, metal mount
metal barrel, metal mount
Optical Formula | Elements
16 elements
9 elements
10 elements
Optical Formula | Groups
11 groups
5 groups
7 groups
Optical Formula | Special Glass
1 aspherical lens, 3 ED lenses, 1 UHR lens groups
1 aspherical element groups
2 aspherical elements groups
Dimensions
Filter Diameter
77 mm
46 mm / 1.81 in
Size | Diameter
87.6 mm
56 mm / 2.20 in
Size | Length
127.6 mm
46 mm / 1.81 in
Weight
654 g
320 g / 11.31 oz
Function
Angle Of View
47° ~ 24°
63.5° Diagonal | 54.4° Horizontal | 37.8° Vertical
107.1° Diagonal | 96.7° Horizontal | 73.7° Vertical (wide) / 91.7° Diagonal | 81.2° Horizontal | 59.5° Vertical (tele)
Aperture
F/1.7 ~ f/16
f/1.4 ~ f/16
f/4 ~ f/22
Autofocus
No
No
Focal Length
0.28 m / 0.92 ft @ 25mm, 0.31 m / 1.02 ft @ 50mm
35 mm
16 mm ~ 21 mm
Focal Length (35mm Equivalent)
50-100 mm
Focus Type
Internal
Image Stabilization
No
No
Operating Temperature
-10°C ~ 40°C
Weather Resistance
Dust, moisture
Zoom Type
External zoom
Performance
Max Magnification
0.21x @ 50mm
0.057x
0.03x
Min Focus Distance
0.37 m
700 mm / 27.56 in
500 mm / 19.69 in
Production
Accessory
Lens hood included
Lens hood included
Debut
2021-07-08
2010-05-17
2006-09-14
Made In
Germany
Germany
Model Name
H-X2550
Reviews
Neofiliac score
93%
61%
Pros
- Bright maximum aperture
- Short barrel
- Very sharp and contrasty
- Solid all-metal construction
- Unique zoom versatility for rangefinder
- Reaches 16mm, the widest for Leica M
Cons
- Low maximum magnification
- Dark maximum aperture
- Low maximum magnification
- Requires wide-angle viewfinder
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