Specifications

5. Turn the flash unit power switch on and set the selector at MZ-A. Press the shutter button partway and the

indication EF appears in the viewfinder, take your picture. The shutter is set automatically at 1/60 sec. and the flash

exposure is controlled according to the distance to the subject.

Note:

The focusing distance priority switch is ON when positioned next to the serial number and OFF when positioned at

the opposite side where an orange mark appears in the groove. For the general flash photography, keep the switch

ON. For bounce flash photography with the Mamiyalite MZ 36R flash unit, for example, make sure the switch is

OFF. This way the flash is operated on the reflected back light from the subject instead of the subject distance.

4www.but kus.org

Automatic Aperture Variation in relation to flash distance with EF lenses

·In the aperture priority AE/manual operation modes

(At ASA 100, with 50mm f/1.4 EF lens and Mamiyalite MZ 36R):

(A) For auto flash photography up to 9m, f/4 is the ideal aperture since

the intencity of the flash is controlled according to the focused distance

and surplus energy is saved for the next shot.

(B) Beyond 9m at f/4, the Crossover System automatically opens the

aperture to obtain the required additional exposure.

intencity is required when the lens is stopped down.

(1) Normal Flash Exposure: When you press the shutter button partway after the flash unit has recharged, the EF

mark and the aperture value you have chosen will be indicated in the viewfinder.

(2) Crossover Flash Exposure: When your subject is too far away for a proper exposure at the aperture setting you

have chosen, the Crossover System will automatically correct the aperture for you. The " o " crossover symbol

appears at the right of the aperture value indicated in the viewfinder to inform you that a cross over flash exposure is

being made.

(3) Underexposure: If your subject is too far away for a proper exposure even at the maximum aperture of the lens in

use, the maximum aperture indication will flash in the viewfinder to inform you that your subject is out of flash

exposure range.

·When you set the crossover switch to FIX by sliding it forward, the Crossover System is disengaged and flash

exposures will always be made at the aperture you have chosen.