Comparison of Pentax 55-300mm f/4-5.8 ED SMC DA and Pentax 55-300mm f/4-5.8 ED WR HD DA

Attribute	Pentax 55-300mm f/4-5.8 ED WR HD DA ×	Pentax 55-300mm f/4-5.8 ED SMC DA ×
Filter Size (mm)	58	58
Notes	Weather resistant; PENTAX SP coating protects exposed lens elements; Included Accessories: lens hood, lens cap, rear lens cap, soft lens case.	Included Accessories: Lens Hood
Closest Focus (m)	1.4	1.4
Magnification Ratio (x)	0.28	0.28
Type	Telephoto Zoom	Telephoto Zoom
Length (mm)	111.5	111.5
APS Equivalent	82.5 - 450mm	82.5 - 450mm
Zoom System	Rotary	Rotary
Image Circle	APS-C	APS-C
Focal Length (mm)	55.00 - 300.00	55.00 - 300.00
Brand	Pentax	Pentax
Name	Pentax 55-300mm f/4-5.8 ED WR HD DA	Pentax 55-300mm f/4-5.8 ED SMC DA
Weight (g)	466	440
Aperture (f)	4.00 - 32.00	4.00 - 32.00
Diaphragm Blades	6	6
Diagonal Angle of View (degree)	5.40 - 29.00	5.40 - 29.00
Lens Construction	12 elements in 8 groups, including ED elements	12 elements in 8 groups, including ED elements
Diameter (mm)	71	71
Focus Details	Quick-shift Focus System	Quick-shift Focus System