With the RZ 67 PRO II, it is possible to lock the mirror in the up position beforehand, and at the desired instant release the shutter without the usual accompanying mirror movement.
Referred to as, "mirror lock-up operation," this technique is extremely valuable when even the slightest mirror vibration must be eliminated. When the mirror rises, it usually causes vibrations the very instant before the shutter opens, creating a possible loss of sharpness when working at high magnifica- tions or with long shutter speeds. Conse- quently, mirror lock-up operation is especially useful when engaging in close-up photography, using telephoto lenses, and making long ("slow") exposures. Yet another application is when trying to catch the peak of
action. By raising the mirror beforehand, the shutter can instantly be released, totally eliminating the time lag usually present between the time the mirror completes its upward swing and the time the shutter opens.
1.After screwing a cable release firmly into the Mirror Lock-up Socket of the lens, the socket will elevate slightly and the camera will be ready for mirror lock-up operation.
2.Press the Cocking Lever as far as it will go. Step 2 may either follow or precede step 1.
3.Depress the Shutter Release Button and the mirror will rise, but the shutter will remain closed.
4.Press the plunger of the cable release and the shutter will operate.
•When you no longer need mirror lock-up operation, remove the cable release.
Upon removing the release, the Mirror Lockup Socket will retract and the camera will return to normal shutter operation.
If you complete step 3 above, but remove the cable release without making an exposure (step 4), the shutter will be released as soon as the cable release is removed.
Even when using mirror lock-up operation, everytime the shutter is cocked, the mirror is relowered. Therefore, it is possible to check the viewfinder before each frame is exposed. A double cable release is both an available and convenient accessory. Since one end of the release screws into the Shutter Release Button and the other end into the Mirror Lock-up Socket, it is possible to use the same release to raise the mirror and later release the shutter.
The double cable release is particularly valuable when using B exposures with mirror lock-up operation. After pressing the shutter release button to raise the mirror, detach the cable release from the mirror lock-up socket. At that instant the shutter will be released.
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