Pentax Espio 738 lens mount_Contax/Yashica The Weston Master 2 Cine

The Weston Master 2 Cine Exposure Meter is a selenium light meter made for motion pictures (its not practical for still photo use)

But you should know that this adapter will also let you use Pentax M42 lenses

Allows for more precise reflected light measurement

so you're on your own to figure out the settings

and that gooey base is Triethanolamine

Pentax Espio 738 lens mount_Contax/Yashica The Weston Master 2 CineThe Pentax Espio 738 is a compact 35mm point and shoot camera with a reasonable 38 70mm zoom range, easy to use controls, and some helpful options (including Bulb mode for long exposures.) Pentax always did a good job with P&S cameras, and this one's no exception. Battery included.