Comparison of Nikon 58mm ƒ/1.4G AF-S Nikkor and Pentax 55mm ƒ/1.4 SDM SMC DA*

Attribute	Nikon 58mm ƒ/1.4G AF-S Nikkor ×	Pentax 55mm ƒ/1.4 SDM SMC DA* ×
Filter Size (mm)	72	58
Notes	Included Accessories: Bayonet hood HB-68, soft lens case CL-1015, front and rear lens caps	Included Accessories: Lens Hood
Closest Focus (m)	0.58	0.45
Magnification Ratio (x)	0.13	0.17
Type	Standard Prime	Standard Prime
Length (mm)	70	66
APS Equivalent	87mm	83mm
Diagonal Angle of View (degree)	40.80	28.60
Image Circle	35mm	APS-C
Focal Length (mm)	58.00	55.00
Brand	Nikon	Pentax
Name	Nikon 58mm ƒ/1.4G AF-S Nikkor	Pentax 55mm ƒ/1.4 SDM SMC DA*
Weight (g)	385	375
Aperture (f)	1.40 - 16.00	1.40 - 22.00
Diaphragm Blades	9	9
Diaphragm Blades Type	rounded	rounded
Lens Construction	9 elements in 6 groups, including 2 aspherical elements	9 elements in 8 groups
Diameter (mm)	85	70.5
Focus Details	Silent Wave Motor (SWM), A (autofocus), M/A (manual-priority autofocus) and M (manual focus)	SDM (supersonic motor), AF/MF switch