Comparison of Zeiss 85mm f/1.4 Otus 1.4/85 APO Planar and Pentax 50mm f/1.4 SDM AW HD D FA*

Attribute	Zeiss 85mm f/1.4 Otus 1.4/85 APO Planar ×	Pentax 50mm f/1.4 SDM AW HD D FA* ×
Magnification Ratio (x)	0.13	0.18
Filter Size (mm)	86	72
Focus Details	Internal focusing; Manual focus only	Ring-type SDM (Supersonic Direct-drive Motor)
Closest Focus (m)	0.8	0.4
Lens Construction	11 elements in 9 groups, including 1 aspheric and 6 elements made of special glass with anomalous partial dispersion	15 elements in 9 groups, including 3 SLD (Super Low Dispersion) glass elements and 1 aspherical element
Length (mm)	124	106
Focal Length (mm)	85.00	50.00
Diaphragm Blades Type	rounded	-
Brand	Carl-zeiss	Pentax
Image Circle	35mm	35mm
Name	Zeiss 85mm f/1.4 Otus 1.4/85 APO Planar	Pentax 50mm f/1.4 SDM AW HD D FA*
Weight (g)	1200	910
Type	Telephoto Prime	Standard Prime
Notes	Available Mounts: Canon EF (ZE), Nikon F (ZF.2); Included Accessories: Lens hood, front and rear lens caps.	Dustproof, weather-resistant construction; Electromagnetic diaphragm
APS Equivalent	1.5x: 127.5mm1.6x: 136mm	75mm
Aperture (f)	1.40 - 16.00	1.40 - 16.00
Diaphragm Blades	9	9
Diagonal Angle of View (degree)	28.20	47.00
Diameter (mm)	101	80