Lenses comparison


Manufacturer	Tamron	Tamron	Sigma	Canon	Tokina
Model	20-40 mm f/2.8 Di III VXD	17-28 mm f/2.8 Di III RXD	20-40 mm f/2.8 EX DG Aspherical	EF 20-35 mm f/2.8L	AT-X 235 PRO AF 20-35 mm f/2.8
Lenst style	Wide angle zoom	Wide angle zoom	Wide angle zoom	Wide angle zoom	Wide angle zoom
Focal length	20 - 40 mm	17 - 28 mm	20 - 40 mm	20 - 35 mm	20 - 35 mm
Maximum aperture	f/2.8	f/2.8	f/2.8	f/2.8	f/2.8
Angle of view	94.3 - 56.49 ^o	103.4 - 75.2 ^o	94.5 - 56.8 ^o	94.5 - 63.4 ^o	93.38 - 63.13 ^o
Closest focusing distance	0.17 m	0.19 m	0.3 m	0.5 m	0.25 m
Maximum magnification	0.26x	1:5.2	1:4.6	1:11.11
Minimum aperture	22	22	32	32	22
Diaphragm blades	9	9	9	8	8
Auto focus type	VXD	AF	AF	AF	AF
Lens Construction	12 elements / 11 group	13 elements / 11 group	17 elements / 13 group	15 elements / 12 group	15 elements / 11 group
Filter diameter	67 mm	67 mm	82 mm	72 mm	77 mm
Macro Yes/No	No	No	No	No	No
Stabilization	No	No	No	No	No
Available mounts	Sony E Sony FE	Sony E Sony FE	Canon EF Nikon F Sony A / Minolta Sigma Pentax K	Canon EF	Canon EF Nikon F
Dimensions	86.5 x 74.4 mm	99 x 73 mm	89 x 107.5 mm	89 x 79.2 mm	85.5 x 84 mm
Weight	365 g	420 g	595 g	570 g	585 g
Additional information	Release date - 18.08.2022 3 aspherical lens elements, 4 low dispersion glass elements	- two low dispertion elements (LD) - one extra low dispertion element (XLD) - two aspherical elements - one hybrid aspherical element		Marketed October 1989
Score [max 5.00]	No score	No score	4.33 (1)	4.67 (2)	No score
Our Review	Review