Canon EF 8-15mm f/4L Fisheye USM Lens

The EF 8-15mm f/4L Fisheye USM is a specialized and adaptable lens from Canon's L-series, providing a unique level of versatility for a lens typically confined to niche applications. This lens is capable of generating both circular and rectangular fisheye effects, distinguished by its significant distortion and rounded image quality, along with an impressive 180° angle of view at the 8mm setting. Its optical construction features two ultra-low dispersion glass elements designed to minimize chromatic aberrations and color fringing, ensuring high clarity and color fidelity. Additionally, a Sub Wavelength coating has been applied to mitigate flare and ghosting, enhancing overall contrast.

In conjunction with its advanced optical features, the 8-15mm f/4 is equipped with a ring-type USM mechanism that facilitates rapid, silent, and precise autofocus, while also allowing for full-time manual focus override. Furthermore, this lens is designed to be weather-sealed and includes a protective fluorine coating on its exposed elements, making it suitable for challenging environmental conditions.

• Unique fisheye zoom is designed for full-frame Canon EF-mount DSLRs, however can also be used with APS-C models where it provides a 12.8-24mm equivalent focal length range.
  
  
• Constant f/4 maximum aperture maintains consistent illumination throughout the zoom range.
  
  
• Zoom allows you to change from a circular 180° fisheye look to a rectangular image. Both ends produce dramatic, creatively distorted imagery.
  
  
• Two ultra-low dispersion glass elements noticeably reduce color fringing and chromatic aberrations for high clarity and color fidelity.
  
  
• A Sub Wavelength Coating has been applied to individual elements to control lens flare and ghosting for greater contrast and color fidelity when working in strong lighting conditions.
  
  
• A ring-type Ultrasonic Motor (USM), along with optimized focusing algorithms and a high-speed CPU, is employed to deliver fast, precise, and quiet autofocus performance as well as full-time manual focus override.
  
  
• As a member of the esteemed L-series, this lens is sealed against dust and moisture for working in inclement environmental conditions.
  
  
• Protective fluorine coating has been applied to the front bulbous element to resist fingerprints and smudges and to make cleaning significantly easier.
  
  
• Built-in filter holder is located at the rear of the lens and accepts cut gel filters.