Comparison of Laowa 9mm f/2.8 Zero-D and Olympus 9-18mm f/4-5.6 ED Zuiko Digital

Attribute	Olympus 9-18mm f/4-5.6 ED Zuiko Digital ×	Laowa 9mm f/2.8 Zero-D ×
Aperture (f)	4.00 - 22.00	2.80 - 22.00
Filter Size (mm)	72	49
Notes	Includes lens cap, lens hood	Built-in petal-shaped lens hood; Available mounts: Canon EF-M, Fujifilm X, Micro Four Thirds, Sony E, DJI DL
Closest Focus (m)	0.25	0.12
Magnification Ratio (x)	0.24	0.13
Zoom System	Rotary	-
Type	Wide Zoom	Wide Prime
APS Equivalent	-	1.5x: 13.5mm; 1.6x: 14.4mm; 2.0x: 18mm
Diaphragm Blades	7	7
Image Circle	Image Circle	APS-C
Focal Length (mm)	9.00 - 18.00	9.00
Brand	Olympus	Laowa
Name	Olympus 9-18mm f/4-5.6 ED Zuiko Digital	Laowa 9mm f/2.8 Zero-D
Weight (g)	280	215
Diagonal Angle of View (degree)	62.00 - 100.00	113.00
Length (mm)	73	53
Diameter (mm)	79.5	60
Focus Details	-	Internal; Manual focus only
35mm Equivalent	18 - 36mm	-
Lens Construction	13 elements in 9 groups, including 1 aspherical ED lens and 2 aspherical elements	15 elements in 10 groups, including 2 aspherical and 3 ED elements; FEC coating