see also:

• Canon EF lenses

• fisheye lenses give a 180deg diagonal field of view resulting in curved lines away from the centre, although with this fisheye the curves are relatively mild
• initially released back in 1987 with the introduction of the EOS system but now out of production since 2011

• 15mm f/2.8 fisheye
• 8 elements in 7 groups
• multicoated
• AF is not USM
• no full time MF
• hard infinity focus stop
• IR index
• 5 straight aperture blades
• closest focus 0.2m giving 0.14x magnification
• rear drop-in gelatin filter holder
• built in metal lens hood
• 73 x 62.2mm
• 330g
• $US650

• Photozone.de test
  • vignetting 0.9EV
  • sharpest at f/5.6 although edges become sharper at f/8
  • CA 0.8px
• http://www.kenrockwell.com/canon/lenses/15mm-fisheye.htm
  • “far sharper than any fisheye from Nikon” - and cheaper