Comparison of Canon EF 8-15mm ƒ/4L USM Fisheye and Samsung 10-17mm f/3.5-4.5 Fish-Eye Schneider D-XENON

Attribute	Canon EF 8-15mm ƒ/4L USM Fisheye ×	Samsung 10-17mm f/3.5-4.5 Fish-Eye Schneider D-XENON ×
Aperture (f)	4.00 - 22.00	3.50 - 32.00
Magnification Ratio (x)	0.39	0.39
Notes	Included Accessories: lens hood, case	-
Focus Details	Inner focusing; Ultra-sonic Motor (USM) with AF/MF switch	"Quick-Shift" Focus System for instant shift to manual focus once the subject is captured by AF
Closest Focus (m)	0.16	0.14
Lens Construction	14 elements in 11 groups, including UD and aspherical elements	10 elements in 8 groups
Length (mm)	83	68
Focal Length (mm)	8.00 - 15.00	10.00 - 17.00
APS Equivalent	13 - 24mm	15 - 25.5mm
Brand	Canon	Samsung
Image Circle	35mm	APS-C
Name	Canon EF 8-15mm ƒ/4L USM Fisheye	Samsung 10-17mm f/3.5-4.5 Fish-Eye Schneider D-XENON
Weight (g)	540	320
Type	Wide Zoom Fisheye	Fisheye Zoom
Diagonal Angle of View (degree)	175.50 - 180.00	100.00 - 180.00
Diaphragm Blades	7	6
Zoom System	Rotary	Rotary
Diameter (mm)	78.5	71.5