Instruction Manual

167
ISO SENSITIVITY
The ISO setting on the Leica M covers a range of ISO 200 – 6400 in
1
/
3
ISO increments, and thus enables you to adapt the shutter speed
/ aperture values to the relevant situation as required.
The
Pull 100 has the same brightness as a sensitivity of ISO 100.
However, pictures taken using this setting have a lower contrast
range. When using this sensitivity setting, it is important to make sure
that important parts of the image are not overexposed.
As well as the fixed settings, the Leica M also features the
Auto
1
function, in which the camera automatically adjusts the sensitivity to
the ambient brightness. In conjunction with aperture priority mode
(see p. 182) this extends the range for automatic exposure control.
However, when using the function it is also possible to specify
priorities, for example for compositional reasons.
Note:
In large and evenly bright subject areas image noise as well as
horizontal and vertical stripes may become visible, especially when
using high ISO sensitivities and subsequently processing the image.
1
The function is not available with a manual exposure setting and when using flash
units (always
1
/
180
s).
Setting the function
Using the
ISO button
1. Press the
ISO button (22).
•The corresponding sub-menu appears in the monitor (1.36).
2. While holding down the
ISO button, use the setting dial (29) or
press up/down on the direction pad (30) to select the desired
sensitivity or the automatic setting.
Note:
When you release the
ISO button, the sub-menu remains visible for
around 2s. However, the set value is applied immediately.
Using the menu
1. In the picture parameters menu (see p. 154/246) select
ISO,
and
2. Use the setting dial (29) or press up/down on the direction pad
(30 to set the desired sensitivity or select the automatic setting.
3. Confirm your setting by pressing the
SET button or theINFO
button.
To set the sensitivity automatically
In the 2nd step, select
Auto, and
3. Call up the corresponding sub-menu.
•This contains three options -
OK , Set maximum ISO and Set
maximum exposure time.