User Manual

EN
24
Basic picture settings
ISO sensitivity
The ISO setting on the Leica S allows a manual adjustment of the shutter
speed/aperture values to the needs of the particular situation.
As well as the fixed settings, the Leica S also features the
ISO Auto
1
func-
tion, in which the camera automatically adjusts the sensitivity to the
ambient brightness. When using the function, however, it is also possible
to specify priorities, for example for compositional reasons. You can both
limit the range of sensitivities used and set the shutter speed below
which the sensitivity is automatically increased.
Notes:
A general rule of thumb is digital photography is that higher sensitivities
result in increased noise. This has to be taken into consideration for the
expectations on the picture quality.
Note with picture series that the frame rates decrease with higher sensi-
tivities.
1
The function is not available when using flash units.
Setting the function
1. In the menu, under IMAGE, select the item ISO and
2. call up the sub-menu
It consists of the available ISO values and the point
ISO Auto.
If you wish to set the sensitivity manually
3. select the desired value
If the sensitivity setting is to function automatically and without
limitations
4. select ISO Auto.
The automatic setting uses all sensitivities and shutter speeds
between
1
⁄2 s and
1
⁄500s
To restrict the automatic setting range
1. In the menu, under SETUP , select the item Auto ISO Setup and
2. select
Auto ISO Photo in the sub-menu
3. Select Maximum Auto ISO and/or Maximum Exposure Time
• When setting Maximum Auto ISO, a list with the available values
appears, when setting
Maximum Exposure Time a further sub-menu
with several alternatives.
4. In the
Maximum AUTO ISO menu list, select the highest sensitivity to
be used, and hence the range within which the automatic setting is
to operate, or in the
Maximum Exposure Time sub-menu set either
one of the three focal length-specific settings -
1/f, 1/ 2f, 1/4f or the
desired slowest shutter speed. With the
1
⁄f settings the camera
switches to the higher sensitivity if the shutter speed would drop
below the selected threshold due to a lack of brightness, e.g. with a
70mm lens with shutter speeds lower than
1
⁄60s (with
1
⁄f (f=focal
length)), or
1
⁄125s with
1
⁄2f, or
1
⁄250s with
1
⁄4f *.
Note:
The factory setting of
1
⁄2f results in the slowest shutter speeds according
to the rule of thumb adapted for this format for blur-free pictures taken
from the hand, e.g.
1
⁄125s with the Summarit-S 1:2.5/70mm ASPH lens.
The corresponding shutter speeds with
1
⁄2f and
1
⁄4f in this example would
be
1
⁄60s and
1
⁄250s.
Inhalt_EN.indd 24 12.10.2015 09:34:15