Mamiya DM System, User Manual

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Chapter 1 - Basic info
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Chapter 5 - Focusing the camera
af assist infrared liGht
When the subject is dark or under-exposed and the camera fails to auto-focus, a red lamp may
light up on the front of the camera when the shutter release button is half-pressed. This is a light
that assists the camera’s auto focus function.

The AF assist infrared light is emitted only when the focus mode is set to “S”
(single focus mode).

Effective range of the AF assist infrared light is limited. It does not reach distant subjects.
Range: 9m/29.5 ft. (using 80 mm f/2.8 lens under test conditions)

When using a lens hood or a bellows lens hood (sold as an optional accessory) that may
interfere with the assist light, set focus before mounting the hood.
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