Sigma EX 4.5mm F2.8 DC HSM Fisheye Specifications

Next to each category and value there are articles describing it all, giving you a deeper understanding on every area so you can better understand the strengths and weaknesses.

Product
Name Sigma EX 4.5mm F2.8 DC HSM Fisheye

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Manufacturer Sigma
Release Date and Price
Release Year 2007
MSRP 1500 USD
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Lens Type
Lens Type Wide Angle Lens
Fisheye
Zoom or Prime Prime lens (no zoom)
Mount and Compatibility
Mount Canon EF-SNikon F
Designed for APS-C sensor Yes
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Focus
Autofocus (AF) Yes
Built-in Autofocus (AF) Motor Yes

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Motor Type No information
Focus Method No information
Closest Focusing Distance 13 cm
Aperture
Maximum Aperture F2,8
Diaphragm Blades No information
Optics
Construction 13 elements  /  9 groups
Special Elements/Coatings No information
Focal Length
Focal Length 4 mm
Zoom Range None (Prime lens)
No Zoom available.
Built-in Teleconverter No
Teleconverter Multiplier N/A
Image Stabilization No
Image Stabilization CIPA rating N/A
Image Stabilization CIPA Rating
Physical
Weather Sealing No
Diameter 76 mm
Length 77 mm
Weight 470 gr
Other
Filter Type Built-in Filter Holder
Filter Diameter N/A
Lens Hood Not Included
Lens Hood SKU N/A
Tripod Collar N/A
Tripod Collar SKU N/A