Sekonic Studio Deluxe L-398 brand_Panasonic 8 AIS Fisheye-Nikkor is probably

8 AIS Fisheye-Nikkor is probably the lens you picture when someone mentions a fisheye

This 45-degree prism viewfinder for the Rollei SL66 has a feature that no other prism finder has: a 360-degree rotating base

with manual scale focusing and autoexposure

with very minor cosmetic wear which does not affect function

Sekonic Studio Deluxe L-398 brand_Panasonic 8 AIS Fisheye-Nikkor is probablyThe Sekonic Studio Deluxe L 398 is a classic battery free light meter for reflected and incident light metering. In excellent condition, with only minor cosmetic wear. Includes dome and flat diffuser for incident light measurement, Lumigrid for reflected light, original case, and neckstrap.