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The ISO sensitivity (image sensitivity) is a numeric indication of the degree to
which the image sensor reacts to light. The higher the number, the greater the
sensitivity to light and suitability to taking pictures in low light where a fast
shutter speed is required. Greater sensitivity, however, is accompanied by some
loss of quality, apparent as noise, color noise or grainy images.
The standard Mamiya ZD Back film speed is ISO 50. The recommended ISO
sensitivity is ISO 50 to ISO 100 to capture images with low noise. The film
speed can be adjusted in 1/3 steps from ISO 50 to ISO 400, but selecting a film
speed above ISO 200 may result in visible noise or grainy images. Use only
when you require a fast shutter speed in low light conditions.
1. Press the ISO button.
The ISO icon and film speed appear on
the digital LCD panel.
2. Press the toggle keys
to select the film speed.
The display will return to the normal screen when any button other than the
[ISO], [OK] or [Cancel] buttons are pressed.
3. Press the ISO button to set.
You can also press any button other than the toggle key
to set.
Important
• Selecting a high ISO sensitivity will result in greater noise, such as color noise or graininess.
•Taking pictures with a high film speed under long exposure conditions will produce more noise,
such as color noise.
• More noise may appear in images when a high film speed is used in a high temperature envi-
ronment.
• Use of the noise reduction function is recommended when using a film speed higher than ISO200.
(P.78)
ISO Sensitivity (Image Sensitivity)
JPEG
CUSTOM
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