Opteka 6.5mm f/3.5 Fisheye Lens vs Sigma 65mm f2 DG DN


	Opteka 6.5mm f/3.5 Fisheye Lens	Sigma 65mm f2 DG DN
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Brand	BrandOpteka	BrandSigma
Sensor Format	Mount Full-Frame APS-C	Mount Full-Frame
Mount	Mount Canon EF-S (APS-C) Canon EF-M (APS-C) Nikon F DX (APS-C) Nikon F DX (Full-Frame) Sony E (APS-C) Sony FE (Full-Frame) Micro Four Thirds (Micro 4/3)	Mount Sigma Mount
Category	CategoryFisheye	CategoryPortrait
Use Case	Use Case Architectural Landscape Creative Videography	Use Case Portrait Low Light Everyday
Focal Length (min/max)	Focal Length (min/max)6.5mm - 6.5mm	Focal Length (min/max)65mm - 65mm
Angle Of View (min/max)	Angle Of View (min/max)180°	Angle Of View (min/max)35.2°
Aperture	Aperturef/3.5max - f/22min	Aperturef/2max - f/16min
Blades	Blades7	Blades9
Circular Aperture	Circular ApertureNo	Circular ApertureYes
Minimum Focus Distance	Minimum Focus Distance0.3m	Minimum Focus Distance0.45m
Max Magnification Ratio (X)	Max Magnification Ratio (X)0.1x	Max Magnification Ratio (X)0.12x
Filter Diameter	Filter Diameter58	Filter Diameter67
Stabilization	StabilizationNo (relies on in-camera stabilization)	StabilizationNo (relies on in-camera stabilization)
Auto Focus	Auto FocusNo	Auto FocusYes
Release Date	Release Date2023	Release Date2023
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