Comparison of Pentax SMC P-FA 20-35mm f/4 AL and Samsung 12-24mm f/4-5.6 ED NX

Attribute	Pentax SMC P-FA 20-35mm f/4 AL ×	Samsung 12-24mm f/4-5.6 ED NX ×
Diameter (mm)	69.5	63.5
Diagonal Angle of View (degree)	64.00 - 94.00	60.70 - 99.00
Zoom System	Rotary	Rotary
Filter Size (mm)	58	58
Aperture (f)	4.00 - 22.00	4.00 - 22.00
Notes	-	Samsung NX Mount; Included Accessories: lens caps, lens hood; i-Scene: Backlight, Landscape, Sunset, Dawn, Beach&Snow, Night
Type	Wide Zoom	Wide Zoom
APS Equivalent	30 - 52.5mm	18.5 - 37mm
Lens Construction	10 elements in 8 groups, including 2 aspherical elements	10 elements in 8 groups, including 1 ED and 2 aspherical elements
Image Circle	35mm	Samsung NX (APS-C)
Focal Length (mm)	20.00 - 35.00	12.00 - 24.00
Brand	Pentax	Samsung
Name	Pentax SMC P-FA 20-35mm f/4 AL	Samsung 12-24mm f/4-5.6 ED NX
Weight (g)	245	208
Diaphragm Blades	-	7
Length (mm)	68	65.5
Focus Details	-	Internal with AF/MF switch
Magnification Ratio (x)	0.06	0.14
Diaphragm Blades Type	-	circular
Closest Focus (m)	0.3	0.24