Lenses comparison


Manufacturer	Carl Zeiss	Irix	Nikon Nikkor	Pentax	Sigma
Model	Batis 18 mm f/2.8	15 mm f/2.4 Firefly	AF 18 mm f/2.8D	smc FA 20 mm f/2.8	20 mm f/1.8 EX DG Aspherical RF
Lenst style	Wide angle	Wide angle	Wide angle	Wide angle	Wide angle
Focal length	18 mm	15 mm	18 mm	20 mm	20 mm
Maximum aperture	f/2.8	f/2.4	f/2.8	f/2	f/1.8
Angle of view	99 ^o	110 ^o	100 ^o	94 ^o	94.5 ^o
Closest focusing distance	0.25 m	0.28 m	0.25 m	0 m	0.2 m
Maximum magnification	1: 9.5		1:9.1	1:8.33	1:4
Minimum aperture	22	22	22	22	22
Diaphragm blades	9	9	0	0	9
Auto focus type	AF / MF	MF	AF	AF	AF
Lens Construction	11 elements / 10 group	15 elements / 11 group	13 elements / 19 group	10 elements / 9 group	13 elements / 11 group
Filter diameter	77 mm	95 mm	77 mm	67 mm	82 mm
Macro Yes/No	No	No	No	No data	No
Stabilization	No	No	No	No	No
Available mounts	Sony E Sony FE	Canon EF Nikon F Pentax K Sony E Sony FE	Nikon F	Pentax K	Canon EF Nikon F Sony A / Minolta Sigma Pentax K
Dimensions	100 x 80 mm	114 x 100 mm	82 x 58 mm	70 x 44 mm	88.5 x 87 mm
Weight	330 g	608 g	380 g	255 g	520 g
Additional information	Announced: 14.04.2016 4 aspherical elements	Announced: 21.03.2016 2 aspherical elements, 3 HR elements, 2 ED elements Lightweight body Weight data for Canon version
Score [max 5.00]	No score	No score	4.33 (1)	No score	3.82 (11)
Our Review	Review