Comparison of Zeiss 50mm f/1.4 Milvus 1.4/50 and Pentax 50mm f/1.4 SDM AW HD D FA*

Attribute	Pentax 50mm f/1.4 SDM AW HD D FA* ×	Zeiss 50mm f/1.4 Milvus 1.4/50 ×
Magnification Ratio (x)	0.18	0.15
Filter Size (mm)	72	67
Focus Details	Ring-type SDM (Supersonic Direct-drive Motor)	Manual focus only
Closest Focus (m)	0.4	0.45
Lens Construction	15 elements in 9 groups, including 3 SLD (Super Low Dispersion) glass elements and 1 aspherical element	10 elements in 9 groups, with 1 apherical and 4 LD elements; Enhanced Zeiss T* anti-reflective coating
Length (mm)	106	94
Focal Length (mm)	50.00	50.00
Diaphragm Blades Type	-	rounded
Brand	Pentax	Carl-zeiss
Image Circle	35mm	35mm
Name	Pentax 50mm f/1.4 SDM AW HD D FA*	Zeiss 50mm f/1.4 Milvus 1.4/50
Weight (g)	910	875
Type	Standard Prime	Standard Prime
Notes	Dustproof, weather-resistant construction; Electromagnetic diaphragm	Available lens mounts: Canon EF (ZE), Nikon F (ZF.2); Weather-sealed construction to protect against dust and moisture; Hood and lens caps included.
APS Equivalent	75mm	1.5x: 75mm; 1.6x: 80mm
Aperture (f)	1.40 - 16.00	1.40 - 16.00
Diaphragm Blades	9	9
Diagonal Angle of View (degree)	47.00	45.00
Diameter (mm)	80	82.9