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Panasonic Lumix G 20mm F1.7 Asph. vs Samyang 20mm T1.9 ED AS UMC

Both are Micro Four Thirds prime lenses. Here is what actually differs.

Pick the Panasonic Lumix G 20mm F1.7 Asph. if

  • You need ⅓ stop more light for low light or background blur (f/1.7 vs f/1.9)
  • You want a compact lens: 25.5 mm vs 113.2 mm long

Pick the Samyang 20mm T1.9 ED AS UMC if

Our spec data shows no clear advantage for this lens.

Spec differences

10 differences
Specifications that differ between the Panasonic Lumix G 20mm F1.7 Asph. and the Samyang 20mm T1.9 ED AS UMC
Panasonic Lumix G 20mm F1.7 Asph. Samyang 20mm T1.9 ED AS UMC
Brand
Panasonic
Samyang
Format
not listed
Full frame
Max aperture
f/1.7 ⅓ stop faster
f/1.9
Weight
100 g
not listed
Length
25.5 mm shorter
113.2 mm
Diameter
63 mm slimmer
83 mm
Filter thread
46 mm
77 mm
Max magnification
0.13×
not listed
Optical design
7 elements / 5 groups
13 elements / 12 groups
Autofocus motor
not listed
Manual focus
5 identical specs hidden: mount, type, focal length, min focus distance, image stabilization. Show all
Mount
Micro Four Thirds both
Type
Prime both
Focal length
20mm both
Min focus distance
0.2 m both
Image stabilization
No both

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