Comparison of Zeiss 50mm f/2 Loxia 2/50 and Leica 50mm f/2 APO-Summicron-M Asph.

Attribute	Zeiss 50mm f/2 Loxia 2/50 ×	Leica 50mm f/2 APO-Summicron-M Asph. ×
Magnification Ratio (x)	0.14	0.09
Filter Size (mm)	52	39
Focus Details	Manual focus only, with large 180 degree focus throw, engraved distance and DOF scales	Manual focus only
Closest Focus (m)	0.45	0.7
Lens Construction	6 elements in 4 groups; Zeiss T* anti-reflective coating	8 elements in 5 groups
Length (mm)	59.2	47
Focal Length (mm)	50.00	50.00
Diaphragm Blades Type	rounded	-
Brand	Carl-zeiss	Leica
Image Circle	35mm	35mm
Name	Zeiss 50mm f/2 Loxia 2/50	Leica 50mm f/2 APO-Summicron-M Asph.
Weight (g)	320	300
Type	Standard Prime	Standard Prime
Notes	Sony E-Mount (full frame); Weather-resistant lens mount gasket; Included Accessories: Lens hood, front and rear lens caps, de-click key.	Leica M-mount with 6-bit ID bar code; Built-in extendable lens hood.
APS Equivalent	1.5x: 75mm	1.33x (M8): 66.5mm
Aperture (f)	2.00 - 22.00	2.00 - 16.00
Diaphragm Blades	10	11
Diagonal Angle of View (degree)	46.80	47.00
Diameter (mm)	62.1	53