Promaster PH25 Panoramic Head  type_Instant Black & White Gives 15mm of extension to

Gives 15mm of extension to the viewfinder and reduces magnification by 30%

An original Asahi Pentax accessory clip for early Pentax cameras without built-in accessory shoes

mechanical function is good

But it's a really cool little artifact

For select 50mm and 35mm lenses

Promaster PH25 Panoramic Head &nbsptype_Instant Black & White Gives 15mm of extension toThe Promaster PH25 Panoramic Head allows for specific rotational pan movements on a tripod. The upper pan control moves a full 360 degrees smoothly and the bottom has pre determined stops that are adjustable with the knob inserted into the side. The PH25 can be mounted to most tripods and heads using its common 3 8" threads. A camera is mounted to the PH25 using the included dovetail quick release plate, which is also compatible with a variety of arca