Comparison of Pentax Q 11.5mm f/9 07 Mount Shield Lens and Tamron F AF 2X

Attribute	Pentax Q 11.5mm f/9 07 Mount Shield Lens ×	Tamron F AF 2X ×
Focal Length Multiplier	-	2X that of the master lens
Magnification Ratio (x)	-	2
Type	Body Cap Pancake Prime	Teleconverter
Effective Reduction in Aperture	-	2 f-stops
Name	Pentax Q 11.5mm f/9 07 Mount Shield Lens	Tamron F AF 2X
Weight (g)	8	-
Image Circle	Image Circle	35mm
Brand	Pentax	Tamron
Lens Construction	1 element	4 elements in 4 groups
Focal Length (mm)	11.50	-
Notes	This lens is used for both snapshots and as a body cap.	Available AF Mounts: Canon, Minolta, Nikon, Pentax
Aperture (f)	9.00	-
Diameter (mm)	40.8	66.7
Length (mm)	6.9	26
35mm Equivalent	Q7: 53mm Q/Q10: 63.5mm	-