Olympus OM system close-up and macro equipment

Calculator Panels

Introduction

The calculator panel that was supplied with the T Power Control 1 is for non-automatic flash with 50mm lenses (including the Zuiko Auto-Macro 50mm f/3.5) and the T10 Ring Flash 1.

Calculator Panels for T10 Ring Flash

Olympus OM Calculator Panels for T10 Ring Flash 1

Calculator Panels in Case

Olympus OM Case for Calculator Panels

Calculator panels for the Zuiko Auto-1:1 Macro 80mm f/4 and the Zuiko Auto-Macro 135mm f/4.5 lenses with the T10 Ring Flash 1 were available as accessories. There was also a calculator panel for 50mm lenses with the T28 Macro Single Flash 1.

T28 Calculator panel

Olympus OM T28 Calculator Panel for 50mm lenses
Photograph courtesy of Linda Wright (Loobylin)

All of the macro flash calculator panels have distance scales in both feet and centimetres, unlike those for the T32 Electronic Flash, which have separate feet and metre versions.

Unlike the panels for the T32 flash gun, those for the macro flashes do not include a setting for conventional (non-TTL) automatic flash. This is because the macro flashes and bellows or macro lenses block the sensor in the “O” of the Olympus badge on the Power Control.

Lens 50mm 50mm 80mm Auto Macro 135mm Auto Macro
Flash T10 T28 single T10 T10
Weight 4.8 gm 4.7 gm 4.8 gm
US catalog no. 107-050 107-051 107-052
Introduced 1980 1980 1980 1980
Discontinued 2003 2003 2003 2003

Item Soft plastic case
Size 134 × 72 mm
Weight 14.0 gm
US catalog no. 107-053
Introduced 1980
Discontinued 2003

Versions

Only one version of each panel is known.

Accessories

A plastic case with pockets for four panels was supplied with the T Power Control 1, and was also available separately.

The original calculator panels for the Power Control are for use with the T10 Ring Flash 1. After the other macro flash units were introduced, a sheet of 14 self-adhesive labels with information for these units was supplied with the T Power Control 1. The labels include new distance and aperture scales for the various flash unit/macro lens combinations, but only for 100 ASA film.

Instruction leaflet

Instructions were not provided with the Calculator Panels.

Send comments or questions to Alan Wood

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Created 18th May 2001   —   Updated 17th June 2011
Copyright © 2001–2011 Alan Wood

Olympus OM system close-up and macro equipment