Comparison of Pentax 55-300mm f/4-5.8 ED WR HD DA and Sony SAL-75300 75-300mm f/4.5-5.6

Attribute	Pentax 55-300mm f/4-5.8 ED WR HD DA ×	Sony SAL-75300 75-300mm f/4.5-5.6 ×
Magnification Ratio (x)	0.28	0.25
Filter Size (mm)	58	55
Focus Details	Quick-shift Focus System	-
Closest Focus (m)	1.4	1.5
Lens Construction	12 elements in 8 groups, including ED elements	13 elements in 10 groups
Length (mm)	111.5	122
Focal Length (mm)	55.00 - 300.00	75.00 - 300.00
Diagonal Angle of View (degree)	5.40 - 29.00	8.20 - 32.00
Brand	Pentax	Sony
Image Circle	APS-C	35mm
Name	Pentax 55-300mm f/4-5.8 ED WR HD DA	Sony SAL-75300 75-300mm f/4.5-5.6
Weight (g)	466	460
Type	Telephoto Zoom	Telephoto Zoom
Notes	Weather resistant; PENTAX SP coating protects exposed lens elements; Included Accessories: lens hood, lens cap, rear lens cap, soft lens case.	Included Accessories: SH0007 Lens Hood
APS Equivalent	82.5 - 450mm	112.5 - 450mm
Aperture (f)	4.00 - 32.00	4.50 - 38.00
Diaphragm Blades	6	7
Zoom System	Rotary	Rotary
Diameter (mm)	71	71