Comparison of Zeiss 15mm f/2.8 Milvus 2.8/15 and Laowa 17mm f/4 GFX Zero-D

Attribute	Zeiss 15mm f/2.8 Milvus 2.8/15 ×	Laowa 17mm f/4 GFX Zero-D ×
Notes	Available lens mounts: Canon EF (ZE), Nikon F (ZF.2); Weather-sealed construction to protect against dust and moisture; Hood and lens caps included.	For Fujifilm G-mount.
Magnification Ratio (x)	0.11	0.28
Filter Size (mm)	95	86
Focus Details	Manual focus only	Internal; Manual focus only
Closest Focus (m)	0.25	0.2
Diagonal Angle of View (degree)	110.00	113.00
Lens Construction	15 elements in 12 groups, including 5 Anomalous Partial Dispersion and 2 aspherical elements; Enhanced Zeiss T* anti-reflective coating	21 elements in 14 groups, including 2 aspherical and 3 ED elements
Focal Length (mm)	15.00	17.00
APS Equivalent	1.5x: 22.5mm; 1.6x: 24mm	-
Brand	Carl-zeiss	Laowa
Image Circle	35mm	Medium Format (Fujifilm G-mount)
Name	Zeiss 15mm f/2.8 Milvus 2.8/15	Laowa 17mm f/4 GFX Zero-D
Weight (g)	880	829
Type	Wide Prime	Wide Prime
Aperture (f)	2.80 - 22.00	4.00 - 32.00
Diaphragm Blades	9	5
Diaphragm Blades Type	rounded	-
Length (mm)	99	124.5
35mm Equivalent	-	13.5mm
Diameter (mm)	102.3	88