Olympus zm2000qdk manual TTL Centralized Control Flash by T32 T20/ OM-2 Combination

FLASH PHOTO GROUP UNITS

TTL Centralized Control Flash by T32 (T20)/ OM-2 Combination

The T32 (T20) utilizes the OM-2's own built-in SBC light sensors. The sensors read the build-up of light from the T32 (T20) which passes through the taking lens to reach the film surface, letting the electronic brain of the camera cut off the flash emission when the correct exposure has been made.

On conventional auto flash units, the auto sensor is built into the flash unit. The sensor regulates flash emission independently of the camera. While normal auto flash units can also give a correct ex- posure, they are far less versatile and convenient in use. Their drawbacks include:

The need to set film speed and lens aperture on both the camera and the flash unit, which leads to exposure errors caused by mistaken film speed and/or aperture alignment. With the T32 (T20)/ OM-2 combination, once these values have been set on the camera there is no need to reset them on the flash unit.

Restrictions on the f-number that can be used. With the T32 (T20)/OM-2, f-number can be selected freely because the light is measured

through the camera lens.

Inability to change the light measuring angle of the sensor according to the taking angle of the chosen lens. With the T32 (T20)/OM-2, light measuring angle always coincides with the picture

angle of the taking lens.

Restricted close-up range and incompatibility

with extension tubes, etc. With the T32 (T20)/ OM-2, close-up and diffused flash photography can be made easily. As the exposure is calculated inside the camera, the methods of using the flash unit are entirely unrestricted.

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