Comparison of Pentax 200mm f/2.8 ED IF SDM SMC DA* and Tokina 16.5-135mm f/3.5-5.6 AT-X DX

Attribute	Pentax 200mm f/2.8 ED IF SDM SMC DA* ×	Tokina 16.5-135mm f/3.5-5.6 AT-X DX ×
Filter Size (mm)	77	77
Notes	Included Accessories: PH-RBK Hood	Available AF Mounts: Canon, Nikon APS-C Only; Included Accessories: Star bayonet hood (BH777)
Closest Focus (m)	1.2	0.5
Magnification Ratio (x)	0.2	0.18
Type	Telephoto Prime	Standard Zoom
Focus Details	Internal, SDM (Supersonic Motor) with Quick-shift Focus System	Internal Focusing. No AF on Nikon D40, D40x, D60.
APS Equivalent	300mm	1.5x: 24.8-202.5mm; 1.6x: 26.4-216mm
Diameter (mm)	83	84
Image Circle	APS-C	APS-C
Focal Length (mm)	200.00	16.50 - 135.00
Brand	Pentax	Tokina
Name	Pentax 200mm f/2.8 ED IF SDM SMC DA*	Tokina 16.5-135mm f/3.5-5.6 AT-X DX
Weight (g)	825	610
Aperture (f)	2.80 - 22.00	3.50 - 22.00
Diaphragm Blades	9	9
Diagonal Angle of View (degree)	8.10	-
Length (mm)	134	78
Zoom System	-	Rotary
Lens Construction	9 elements in 8 groups	15 elements in 9 groups, including 3 aspherical and 2 SD elements