Fisheye port for:
- Nikon AF DX Fisheye 2,8/10,5 mm lens
- Nikon AF 2,8/14mm ED
- Nikon Af Fisheye 2,8D/16mm
- Tokina AT-X DX 10-17mm fisheye zoom
- Canon EF 2,8/15mm fisheye
- Canon EF 2,8L/14 mm USM (with 20mm extensionring)
- Canon EF 2,8L/16-35 zoom USM (with 40mm extensionring)
- Canon EF 4.0L/17-40 zoom (with 40mm extensionring)

It's avaible in acrylic.

Inclusive neoprene protection cap and external dust cap.