Zero Image Zero 6 x 9 Multi Format - Reciprocity Corrections; Trigger the Shutter

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Reciprocity Corrections

If the exposure time is shorter than 1/10,000 seconds or longer than 1

second, it is necessary to calculate and adjust for reciprocity failure.

Exposure time indicated by

Exposure scale Compensation Exposure

1 second (or over) x2 2 seconds

5 seconds (or over) x5 25 seconds

50 seconds (or over) x12 600 sec or 10 min.

Note:1. All informations mentioned above is based on ASA100 film

speed. 2. Some practice will be required to relate the times given in

this chart to your particular camera and film. Keep a record of the

light condition and the exposure time for every photograph you

take, so that you can make later adjustments accordingly.

Trigger the Shutter

1. To expose, simply slide the shutter

(D) to open the shutter. When the

exposure time is up, close it by slide

it back to cover the pinhole.

2. If you use high speed film or a zone plate version camera, the

exposure time may less than 1 sec. This time you need to open the

shutter (D) and hide the pinhole/zone plate with your finger, then

remove your finger and put it back to cover the pinhole as fast as

you can.

3. If you have the optional cable release adaptor (L), you can open the

shutter maually by sliding it or attach the cable release to trigger

the shutter as “B” mode on ordinary camera.

open