T
he Bower SLY 358 8mm f/3.5
Ultra-Wide Fisheye Lens with a 180° angle of view,
allows the photographer to see his subjects in unique way. This ultra-wide
delivers a rounded perspective, well-suited to landscapes and unusual
portraiture. It has multi-coated elements and a fixed petal-type lens hood to
reduce flare and ghosting.
A fisheye lens is a wide-angle lens that takes in an extremely wide, hemispherical image. Originally
developed for use in meteorology to study cloud formation and called "whole-sky lenses", fisheye lenses quickly became popular in general photography for their unique, distorted appearance. They are often used by photographers shooting broad landscapes to suggest the curve of the Earth. Hemispherical photography is used for various scientific purposes to study plant canopy geometry and to calculate near-ground solar radiation.

Bower SLY 358 8mm f/3.5 Ultra-Wide Fisheye Lens - Front Angle
View
The first types of fisheye lenses to be developed were "circular fisheyes" — lenses which take in a 180° hemisphere and project this as a circle within the film frame. Some circular fisheyes
are available in orthographic projection models for scientific applications. These have a 180° vertical angle of view, and the horizontal and diagonal angle of view are also 180°. Most circular fisheye lenses cover a smaller image circle than rectilinear lenses, so the corners of the frame will be completely dark.

Bower SLY 358 8mm f/3.5 Ultra-Wide Fisheye Lens - Mount View
Alternative Fisheye Lenses
Features

• 180° diagonal angle of view on APS-C image format
• Creates outstanding, sharply defined images by using a hybrid aspherical lens
• Reduces flair and ghosting with super multi-layer coating
• Minimum focusing distance of 12-inches (304.8mm)
• Fixed petal-type lens hood
Lens Includes
•
Bower 8mm f/3.5 Aspherical Fisheye Manual Focus Lens
• Front & Rear Lens Caps
• Lens Hood
• Lens Pouch
• 1-Year Warranty
Reviews
Blown' Away... could see paying over 700
By lightcatcher74 from Traverse City, MI on 2/22/2010
Feels like the nikon 14 2.8 and quite sharp. Was sceptical, now I might have to go get their 85 1.4 If it is even close to this quality I'll be happy. I hope they start introducing more glass. I would give this 4 1/2 stars in a rating to compare with all fish-eyes ( no AF but you barley need to focus anyways).