Comparison of Pentax 70mm ƒ/2.4 Limited DA HD and Sony 85mm f/2.8 SAM SAL85F28

Attribute	Sony 85mm f/2.8 SAM SAL85F28 ×	Pentax 70mm ƒ/2.4 Limited DA HD ×
Magnification Ratio (x)	0.2	0.12
Filter Size (mm)	55	49
Focus Details	Smooth Autofocus Motor (SAM)	Quick-Shift Focus System
Closest Focus (m)	0.6	0.7
Lens Construction	5 elements in 4 groups	6 elements in 5 groups
Length (mm)	52	26
Focal Length (mm)	85.00	70.00
Diaphragm Blades Type	-	rounded
Brand	Sony	Pentax
Image Circle	35mm	APS-C
Name	Sony 85mm f/2.8 SAM SAL85F28	Pentax 70mm ƒ/2.4 Limited DA HD
Weight (g)	175	147
Type	Telephoto Prime	Telephoto Prime
Notes	Sony Alpha SLR Mount. Included Accessories: Lens Hood	Available in black or silver; High-grade multi-layer HD (High Definition) coating; Rounder aperture blades should yield more pleasing bokeh.
APS Equivalent	127.5mm	107mm
Aperture (f)	2.80 - 22.00	2.40 - 22.00
Diaphragm Blades	7	9
Diagonal Angle of View (degree)	29.00	23.00
Diameter (mm)	70	63