Comparison of Pentax SMC P-FA J 18-35mm f/4-5.6 AL and Samsung 12-24mm f/4-5.6 ED NX

Attribute	Pentax SMC P-FA J 18-35mm f/4-5.6 AL ×	Samsung 12-24mm f/4-5.6 ED NX ×
Aperture (f)	4.00 - 32.00	4.00 - 22.00
Filter Size (mm)	67	58
Notes	Distance scale, petal-shaped lens hood	Samsung NX Mount; Included Accessories: lens caps, lens hood; i-Scene: Backlight, Landscape, Sunset, Dawn, Beach&Snow, Night
Closest Focus (m)	0.28	0.24
Magnification Ratio (x)	0.18	0.14
Diameter (mm)	67.5	63.5
Type	Wide Zoom	Wide Zoom
APS Equivalent	27 - 52.5mm	18.5 - 37mm
Diaphragm Blades	6	7
Image Circle	35mm	Samsung NX (APS-C)
Focal Length (mm)	18.00 - 35.00	12.00 - 24.00
Brand	Pentax	Samsung
Name	Pentax SMC P-FA J 18-35mm f/4-5.6 AL	Samsung 12-24mm f/4-5.6 ED NX
Weight (g)	190	208
Diagonal Angle of View (degree)	63.00 - 100.00	60.70 - 99.00
Lens Construction	12 elements in 10 groups	10 elements in 8 groups, including 1 ED and 2 aspherical elements
Zoom System	Rotary	Rotary
Length (mm)	71	65.5
Diaphragm Blades Type	-	circular
Focus Details	Dedicated AF/MF	Internal with AF/MF switch