Comparison of Zeiss 21mm f/2.8 Milvus 2.8/21 and Fujinon GF 23mm f/4 R LM WR

Attribute	Fujinon GF 23mm f/4 R LM WR ×	Zeiss 21mm f/2.8 Milvus 2.8/21 ×
Aperture (f)	4.00 - 32.00	2.80 - 22.00
Filter Size (mm)	82	82
Notes	For Fujifilm G-mount; Weather, dust and freeze resistant; Lens caps, hood and pouch included.	Available lens mounts: Canon EF (ZE), Nikon F (ZF.2); Weather-sealed construction to protect against dust and moisture; Hood and lens caps included.
Closest Focus (m)	0.38	0.22
Magnification Ratio (x)	0.09	0.2
Diameter (mm)	89.8	95.3
Type	Wide Prime	Wide Prime
APS Equivalent	-	1.5x: 31.5mm; 1.6x: 33.6mm
Diaphragm Blades	9	9
Image Circle	Medium Format (Fujifilm G-mount)	35mm
Focal Length (mm)	23.00	21.00
Brand	Fujinon	Carl-zeiss
Name	Fujinon GF 23mm f/4 R LM WR	Zeiss 21mm f/2.8 Milvus 2.8/21
Weight (g)	845	735
Diaphragm Blades Type	rounded	rounded
Lens Construction	15 elements in 12 groups, including 2 aspherical, 1 Super ED, and 3 ED (extra low dispersion) elements; Nano GI coating	16 elements in 13 groups, including 4 Anomalous Partial Dispersion elements; Enhanced Zeiss T* anti-reflective coating
Diagonal Angle of View (degree)	99.90	90.00
Length (mm)	103	92.5
35mm Equivalent	18mm	-
Focus Details	AF via a linear motor	Manual focus only