Comparison of Panasonic 12-35mm ƒ/2.8 II ASPH POWER OIS LUMIX G X VARIO (H-HSA12035) and Pentax 20-40mm ƒ/2.8-4 ED Limited DC WR HD DA

Attribute	Pentax 20-40mm ƒ/2.8-4 ED Limited DC WR HD DA ×	Panasonic 12-35mm ƒ/2.8 II ASPH POWER OIS LUMIX G X VARIO (H-HSA12035) ×
Notes	HD coating, SP (Super Protect) coating; Weather-resistant construction	Additional features: Power O.I.S. Image Stabilization, Nano Surface Coating
Aperture (f)	2.80 - 32.00	2.80 - 22.00
Magnification Ratio (x)	0.2	0.17
Filter Size (mm)	55	58
35mm Equivalent	-	24 - 70mm
Type	Standard Zoom	Standard Zoom
Diaphragm Blades	9	7
Zoom System	Rotary	Rotary
Image Circle	APS-C	Micro Four-Thirds
Focal Length (mm)	20.00 - 40.00	12.00 - 35.00
Brand	Pentax	Panasonic
Name	Pentax 20-40mm ƒ/2.8-4 ED Limited DC WR HD DA	Panasonic 12-35mm ƒ/2.8 II ASPH POWER OIS LUMIX G X VARIO (H-HSA12035)
Weight (g)	283	305
Diaphragm Blades Type	rounded	circular
Lens Construction	9 elements in 8 groups, including 1 ED and 1 SLD element	14 elements in 9 groups, including 1 UED (Ultra Extra-Low Dispersion), 1 UHR (Ultra High Refractive), and 4 aspherical elements
Diagonal Angle of View (degree)	39.00 - 70.00	34.00 - 84.00
Focus Details	Quick-shift Focus; DC focus motor	Internal focus with linear motor
Diameter (mm)	71	67.6
Length (mm)	68.5	73.8
APS Equivalent	30.5 - 61.5mm	-
Closest Focus (m)	0.28	0.25