Comparison of Pentax 8.5mm f/1.9 01 Standard Prime and Samsung 9mm f/3.5 ED NX-M

Attribute	Pentax 8.5mm f/1.9 01 Standard Prime ×	Samsung 9mm f/3.5 ED NX-M ×
Filter Size (mm)	5	-
Notes	For use with Pentax Q compact system camera. Lens shutter. ND filter (2 stops light reduction). PENTAX SP (Super Protect) coating. Optional MH-RA len	Samsung NX-M Mount
Closest Focus (m)	0.2	0.11
Magnification Ratio (x)	0.05	0.11
Type	Standard Prime	Wide Prime
Focus Details	Autofocus with electronic manual focus	Autofocus
APS Equivalent	47mm	24.3mm
Diameter (mm)	46	50
Image Circle	Pentax Q-mount	Samsung NX-M(1"-type, 2.7x crop factor)
Focal Length (mm)	8.50	9.00
Brand	Pentax	Samsung
Name	Pentax 8.5mm f/1.9 01 Standard Prime	Samsung 9mm f/3.5 ED NX-M
Weight (g)	37	31
Aperture (f)	1.90 - 8.00	3.50 - 13.00
Diaphragm Blades	5	5
Diagonal Angle of View (degree)	49.50	83.40
Length (mm)	23	12.5
Diaphragm Blades Type	-	circular
Lens Construction	8 elements in 5 groups, including 2 Aspherical elements	6 elements in 5 groups; including 1 aspherical, 1 Extra-low Dispersion and 1 Xtreme High Refractive element