Pentax Espio 738 lens mount_Contax/Yashica all to create what I

all to create what I assume is a hanging display for a store somewhere that needed help moving projectors

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

Allows for more precise reflected light measurement

There is a minor amount of dust

This extension tube set includes two M42 thread-mount extension tubes: roughly 7mm and 15mm

Pentax Espio 738 lens mount_Contax/Yashica all to create what IThe 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.