Lenses comparison


Manufacturer	Nikon Nikkor	Nikon Nikkor	Leica	Sigma	Voigtlander
Model	AF-S 20 mm f/1.8G ED	AF 20 mm f/2.8D	Summilux-M 21 mm f/1.4 ASPH.	20 mm f/1.8 EX DG Aspherical RF	Ultron 21 mm f/1.8
Lenst style	Wide angle	Wide angle	Wide angle	Wide angle	Wide angle
Focal length	20 mm	20 mm	21 mm	20 mm	21 mm
Maximum aperture	f/1.8	f/2.8	f/1.4	f/1.8	f/1.8
Angle of view	94.5 ^o	94 ^o	92 ^o	94.5 ^o	91.7 ^o
Closest focusing distance	0.2 m	0.25 m	0.7 m	0.2 m	0.5 m
Maximum magnification	1:4.35	8.3	1:29	1:4	1:7.7
Minimum aperture	16	22	16	22	22
Diaphragm blades	7	7	0	9	10
Auto focus type	AF SWM	AF	manual	AF	MF
Lens Construction	13 elements / 11 group	12 elements / 9 group	10 elements / 8 group	13 elements / 11 group	13 elements / 11 group
Filter diameter	77 mm	62 mm	82 mm	82 mm	58 mm
Macro Yes/No	No	No	No	No	No
Stabilization	No	No	No	No	No
Available mounts	Nikon F	Nikon F	Leica M / VM-Mount	Canon EF Nikon F Sony A / Minolta Sigma Pentax K	Leica M / VM-Mount
Dimensions	81 x 83 mm	42.5 x 69 mm	70 x 77 mm	88.5 x 87 mm	78.4 x 69 mm
Weight	355 g	270 g	580 g	520 g	412 g
Additional information	Anounced: Sep 12, 2014 2 ED and 2 aspherical lenses.	Marketed 1994			Announced: September 2012
Score [max 5.00]	4.33 (6)	4.60 (10)	No score	3.82 (11)	No score
Our Review	Review	Review