Comparison of Pentax SMC P-FA 50mm f/2.8 Macro and Tokina 35mm f/2.8 AT-X M35 PRO DX

Attribute	Pentax SMC P-FA 50mm f/2.8 Macro ×	Tokina 35mm f/2.8 AT-X M35 PRO DX ×
Focus Details	-	One-Touch Focus Clutch mechanism
Weight (g)	386	340
Type	Standard Prime Macro	Wide Prime Macro
Brand	Pentax	Tokina
Name	Pentax SMC P-FA 50mm f/2.8 Macro	Tokina 35mm f/2.8 AT-X M35 PRO DX
Diameter (mm)	67.5	73.2
Image Circle	35mm	APS-C
Lens Construction	8 elements in 7 groups	9 elements in 8 groups
APS Equivalent	75mm	1.5x: 52.5mm; 1.6x: 56mm
Magnification Ratio (x)	1	1
Closest Focus (m)	0.15	0.14
Filter Size (mm)	52	52
Aperture (f)	2.80 - 32.00	2.80 - 22.00
Diagonal Angle of View (degree)	47.00	43.00
Diaphragm Blades	-	9
Focal Length (mm)	50.00	35.00
Notes	-	Available AF Mounts: Canon and Nikon Digital APS-C Only; Included Accessories: SH522 Lens hood
Length (mm)	71	60.4