Leica 18452, 18450 manual 129, Speed priority mode, Aperture priority mode

Speed priority mode

The speed priority mode automatically controls the exposure based on the manually set shutter speed. It is therefore particularly well suited for taking pictures of moving subjects, where the sharpness of the movement portrayed

–which is determined by the shutter speed used – is the crucial element of composition.

By manually pre-selecting an appropriately fast shutter speed, you can there- fore prevent unwanted blurring of the movement – you can „freeze” your subject. Or, in reverse, you can express the dynamics of the movement with a deliberate „wiping” effect using a correspondingly slower shutter speed.

To set this mode, turn the aperture dial (1.9) to the A position and set the de- sired shutter speed with the respective dial (1.10).

•The mode is indicated by T (2.1.1). In addition, the manually set shutter speed appears – in white - (2.1.17).

To take a picture with this mode

1.Press the shutter release button (1.8) to its pressure point

•The automatically set aperture appears in white (2.1.20).

If even the fully opened or closed aperture in conjunction with the set shutter speed would result in under- or overexposure, both values turn red as an indication.

If the automatically set aperture value seems appropriate for the intended composition:

2. Press the shutter release button all the way down to take the photograph.

If not, you can change the shutter speed before pressing the shutter release button.

Aperture priority mode

Aperture priority mode automatically controls the exposure based on the manually set aperture. It is therefore particularly well suited for taking pictures where the depth of field – which is determined by the aperture used – is the crucial element of composition.

By manually pre-selecting an appropriately low aperture value (= large aper- ture) you can reduce the depth of field, for example in a portrait to let a face „stand out”, i.e. be shown clearly in front of an unimportant or distracting background. Or, in reverse, with a correspondingly high aperture value (= small aperture) you can increase the depth of field, in order to reproduce everything from the foreground to the background clearly in a landscape photograph.

To set this mode, turn the shutter speed dial (1.10) to the A position and set the desired aperture with the respective dial (1.9).

•The mode is indicated by A (2.1.1). In addition, the manually set aperture ap- pears in white (2.1.20).

To take a picture with this mode

1.Press the shutter release button (1.8) to its pressure point.

•The automatically set shutter speed appears in white (2.1.17).

If even the fastest or slowest shutter speed in conjunction with the set aperture speed would result in under- or overexposure, both values turn red as an indication.

If the automatically set shutter speed seems appropriate for the intended composition:

2. Press the shutter release button all the way down to take the photograph.

If not, you can change the shutter speed before pressing the shutter release button.

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