Comparison of Leica 50mm ƒ/1.4 Summilux-M Asph. and Leica 50mm f/2 APO-Summicron-M Asph.

Attribute	Leica 50mm ƒ/1.4 Summilux-M Asph. ×	Leica 50mm f/2 APO-Summicron-M Asph. ×
Aperture (f)	1.40 - 16.00	2.00 - 16.00
Filter Size (mm)	46	39
Notes	Leica M-mount with 6-bit ID bar code; Built-in telescopic lens hood; Available in black (anodized aluminum) or silver (chromed brass).	Leica M-mount with 6-bit ID bar code; Built-in extendable lens hood.
Closest Focus (m)	0.7	0.7
Magnification Ratio (x)	0.09	0.09
Type	Standard Prime	Standard Prime
Focus Details	Manual focus only	Manual focus only
APS Equivalent	1.33x (M8): 68.6mm	1.33x (M8): 66.5mm
Diaphragm Blades	9	11
Image Circle	35mm	35mm
Focal Length (mm)	51.60	50.00
Brand	Leica	Leica
Name	Leica 50mm ƒ/1.4 Summilux-M Asph.	Leica 50mm f/2 APO-Summicron-M Asph.
Weight (g)	335	300
Diagonal Angle of View (degree)	47.00	47.00
Length (mm)	52.5	47
Diameter (mm)	53.5	53
Lens Construction	8 elements in 5 groups	8 elements in 5 groups