Metz SCA 3202-M AF measuring beam control, Mecablitz 45 CL-4 and 60 CT-4, Mecablitz 45 CL-4 digi

Example:

Focal length of the lens = 35 mm; position of flash reflector = 28 mm.

The picture is correctly illuminated because the flash unit’s reflector covers an area larger than the image size.

4.6 AF measuring beam control

The AF measuring beam is activated by the came- ra’s electronic system when the ambient lighting conditions are insufficient for automatic focusing. The flash unit’s AF beam emitter projects a striped pattern on to the subject and the camera uses this pattern to focus automatically. The AF beam has a distance range of about 6 m to 9 m. Parallax error between the lens and the AF beam emitter limits the close-up range to approx. 0.7 – 1 m. Zoom lenses with a small initial aperture may signifi- cantly reduce the distance range of the AF mea- suring beam.

To enable activation of the AF measuring beam, the camera must be switched to AF mode and the central AF metering area must be activated (if a camera with several AF sensors is used).

mecablitz 45 CL-4 and 60 CT-4

These flash units of the SCA 300 System are con- nected to the SCA adapter by means of the „SCA 3000C“ cable (optional extra). The AF measuring beam integrated in the SCA 3000C cable takes over the AF measuring beam function of the flash unit.

mecablitz 45 CL-4 digi

These flash units are connected to the SCA adap-

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