Comparison of Pentax SMC P-FA 85mm f/1.4 IF and Sigma 85mm ƒ/1.4 EX DG HSM

Attribute	Sigma 85mm ƒ/1.4 EX DG HSM ×	Pentax SMC P-FA 85mm f/1.4 IF ×
Notes	Available AF Mounts: Canon, Nikon, Pentax, Sigma, Sony. Included Accessories: Case, Lens Hood, Hood Adapter.	Included Accessories: Hood
Aperture (f)	1.40 - 16.00	1.40 - 22.00
Magnification Ratio (x)	0.12	0.1
Filter Size (mm)	77	67
Type	Telephoto Prime	Telephoto Prime
Closest Focus (m)	0.85	0.85
APS Equivalent	1.5x: 128mm; 1.6x: 136mm	127.5mm
Diaphragm Blades	9	-
Image Circle	35mm	35mm
Focal Length (mm)	85.00	85.00
Brand	Sigma	Pentax
Name	Sigma 85mm ƒ/1.4 EX DG HSM	Pentax SMC P-FA 85mm f/1.4 IF
Weight (g)	726	618
Diagonal Angle of View (degree)	28.60	28.50
Lens Construction	11 elements in 8 groups, including 1 SLD element	8 elements in 7 groups
Diameter (mm)	84.7	79
Length (mm)	87.6	71
Diaphragm Blades Type	rounded	-
Focus Details	HSM with A/M Switch	Internal