Automatic Exposure Body PM-PBA / PM-PBS

Summary	Main Characteristics	Notes - Related Units
The Automatic Exposure Bodies automatically determine the correct exposure time in conjunction with the Automatic Exposure Control Boxes PM-CBA / PM-CBAD / PM-CBSP.	The PM-PBA incorporates an electronically controlled shutter in an automatic exposure range from 1/100 sec. to 32 minutes, a three position light path selector knob with sliding prisms, a quick clamp adapter for attachment to a microscope photo tube, and a connecting cord to the Control Box. A focusing unit can be clamped into the front of the Exposure Body. The PM-PBS & PM-PBSP are updated versions. The PM-PBSP has a built-in spot meter. Their mount has two electronic contacts that can trigger the built-in winder of the microphotographic 35mm camera body C-35AD-4 which must be connected with the Adapter PM-D35A. They also have provisions for the Color Temperature Module PM-CTR and Bright Frame Viewfinder PM-VSB.	Among the focusing units available, the Screen Viewer PM-VSC is recommended for objectives lower than 4x, the Focusing Telescope PM-VS for higher objectives. They require the Photomicro Adapter H and 35mm SLR Camera Adapter PM-D35S to mount an OM body.