Metz Complete Guide to Flash Functions for the SCA 3202 Camera Flash

2.2 Shutter priority S

In the camera mode „S“ any shutter speed can be set on the camera. The camera will then automati- cally select an aperture to match the ambient light conditions.

2.3 Aperture priority A

In the camera mode „A“ an aperture can be pre- selected on the camera. The camera will then au- tomatically adjust a shutter speed that matches the ambient light conditions.

When selecting the aperture ensure that the sub- ject is within the working range of the flash unit (see aperture calculator or the flash unit’s LC dis- play).

2.4 Manual M

An aperture and a shutter speed can be preselect- ed on the camera when in “M” mode.

When selecting the aperture ensure that the sub- ject is within the working range of the flash unit (see aperture calculator or the flash unit’s LC dis- play).

3. Flash modes

3.1 TTL flash mode

The TTL mode is an automatic flash mode where flash exposure metering is performed by a sensor inside the camera. TTL flash operation with an Olympus digital camera is a flash mode with auto- matic determination of the guide number or partial light output, on the basis of preflash technology.

Fractions of a second prior to exposure, one or two invisible pre-flashes are fired, depending on the given camera type.

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