Comparison of Sony FE 85mm f/1.8 SEL85F18 and Tamron SP AF 90mm f/2.8 Di Macro 1:1

Attribute	Sony FE 85mm f/1.8 SEL85F18 ×	Tamron SP AF 90mm f/2.8 Di Macro 1:1 ×
Magnification Ratio (x)	0.13	1
Filter Size (mm)	67	55
Focus Details	Internal with double linear motor; AF/MF switch; Focus hold button	External focus system, lens length varies while focusing
Closest Focus (m)	0.8	0.29
Lens Construction	9 elements in 8 groups, including 1 ED element	10 elements in 9 groups
Length (mm)	82	97
Focal Length (mm)	85.00	90.00
Diaphragm Blades Type	rounded	-
Brand	Sony	Tamron
Image Circle	35mm (Full-frame E-Mount)	Image Circle
Name	Sony FE 85mm f/1.8 SEL85F18	Tamron SP AF 90mm f/2.8 Di Macro 1:1
Weight (g)	371	405
Type	Telephoto Prime	Telephoto Prime Macro
Notes	Dust and moisture resistant; Included Accessories: Hood (ALC-SH150), Lens front cap (ALC-F67S), Lens rear cap (ALC-R1EM).	Available mounts: Canon, Minolta, Nikon, Pentax; Includes lens hood and case.
APS Equivalent	127.5mm	1.5x: 135mm; 1.6x: 144mm
Aperture (f)	1.80 - 22.00	2.80 - 32.00
Diaphragm Blades	9	9
Diagonal Angle of View (degree)	29.00	27.00
Diameter (mm)	78	71.5