The ExpoDisc (77mm) viewing most notably to the rubber

most notably to the rubber grip and to a small area on the edge of the mode dial

a Rolleikin adapter setup is included if you're in a 35mm mood

Optics have a touch of haze in a centre element group

8L II is a classic "standard" lens for professional event and portrait work for a reason: It's fast

The Rodenstock-Omegar 75mm f4

The ExpoDisc (77mm) viewing most notably to the rubberThe ExpoDisc is a clip on (or hold in front of) diffuser designed to facilitate setting custom white balance. Rather than hauling around a gray card, or trying to find a plain white surface, or hoping that your camera guesses correctly, you can toss this in front of your lens and lock in an accurate custom white balance in seconds. Bonus: if you actually use this on a lens with a 77mm filter thread, it can replace your lenscap. Yeah, its just a fancy