Comparison of Nikon 200mm f/2G ED-IF AF-S VR Nikkor and Pentax SMC P-FA 600mm f/4 ED IF

Attribute	Pentax SMC P-FA 600mm f/4 ED IF ×	Nikon 200mm f/2G ED-IF AF-S VR Nikkor ×
Notes	Included Accessories: Case	Image Stabilization; Included accessories: HK-31 Hood, CL-L1 Case, LN-1 Strap, 52mm filter holder
Magnification Ratio (x)	-	0.12
Filter Size (mm)	43	52
Focus Details	Internal	Internal with SWM, manual focus, and focus preset with Memory Recall; Focus Limiter Switch
Closest Focus (m)	5	1.9
Lens Construction	9 elements in 7 groups	13 elements in 19 groups, including 3 ED glass elements, 1 Super ED glass element and 1 protective glass (Meniscus) element
Length (mm)	457	203
Focal Length (mm)	600.00	200.00
APS Equivalent	900mm	300mm
Brand	Pentax	Nikon
Image Circle	35mm	35mm
Name	Pentax SMC P-FA 600mm f/4 ED IF	Nikon 200mm f/2G ED-IF AF-S VR Nikkor
Weight (g)	6450	2900
Type	Telephoto Prime	Telephoto Prime
Aperture (f)	4.00 - 32.00	2.00 - 22.00
Diaphragm Blades	-	9
Diagonal Angle of View (degree)	4.10	12.30
Diameter (mm)	175	124