Pentax 40 MZ-3i AF measuring beam, ML function Modelling Light, ML-functions, ML button

14. Special functions AF measuring beam

Fig.27: The AF measuring beam
In such an event the exposure o.k. display	remains dark after the shutter has

been released. Select the next larger f-stop (e.g. f/8 instead of f/11), and repeat the exposure.

AF measuring beam

As the release or other sensory control of the camera is operated, the integrated

AF measuring beam is automatically activated in the event of low lighting levels or with a low-contrast subject. The measuring beams project a light pattern onto the subject (Fig. 27). The camera’s autofocus system uses the light reflected from the subject to measure image sharpness and focus the lens. The range of the AF measuring beam is approx. 9 m with a 50 mm f/1.7 lens.

☞This function is only available with specific AF cameras in conjunction with an SCA 3000 adapter.

14. Special functions	ML-functions
The ML function (Modelling Light)

The ML button on the flashgun triggers a modelling light for approx. 4

seconds to allow assessment of the shadows, particularly in remote control modes. When the ML button is pressed on the controller (master flashgun), all slaves of the type 40 MZ-1(i) and 3 (i), and 50 MZ-5 will simultaneously emit such modelling light. 40 MZ-.. slaves must be fitted with an SCA 3080 adapter for

this purpose. Hold down the ML button	for at least 2 seconds to trigger the
modelling light and release the ML button	the moment the modelling light

lights up. Switch off the mecablitz if you wish the light to be cut off.

☞The modelling light can be triggered about 60 times with a fully charged battery.

This mode is not suitable with battery operation.

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