Blackmagic Design URSA Mini Manual De Instalación Y Funcionamiento página 83

You can create dynamic and interesting speed effects in your clips by varying the sensor frame
rate. Setting the sensor frame rate higher than your project frame rate will create slow motion
during playback. Alternatively, the lower your sensor frame rate, the faster your clips will appear.
The principle is similar to overcranking and undercranking a film camera. Overcranking speeds
up the sensor frame rate so you can stretch out moments in time during playback to enhance
emotion. Undercranking slows down the sensor frame rate so you can increase the action in
fast moving scenes. The creative possibilities are endless and entirely up to you!
For information on the maximum frame rates available for each recording format and codec,
refer to the table in the 'recording' section of this manual.
NOTE When 'off speed frame rate' is selected your URSA Mini's audio and video are
no longer synced. This is true even if you set the same project and sensor frame rate.
For this reason, 'off speed frame rate' should never be selected if you want to
guarantee audio syncing.
Shutter
The 'Shutter' indicator displays your shutter angle or shutter speed. By tapping this indicator,
you can manually change your URSA Mini's shutter values or configure shutter priority auto
exposure modes. On URSA Mini 4.6K and URSA Mini Pro, the shutter measurement setting can
be used to select whether to display shutter information as 'shutter angle' or 'shutter speed'.
See the 'setup settings' section in this manual for more information.
Your URSA Mini's shutter indicator. Tap this to access shutter settings
Shutter angle or shutter speed defines the level of motion blur in your video, and can be used
to compensate for varying light conditions. 180 degrees is the optimum shutter angle for
capturing satisfying motion blur in most conditions, with the equivalent being a shutter speed of
1/50th of a second. However as lighting conditions change, or the amount of movement in your
scene increases, you may decide to adjust accordingly.
For example, 360 degrees is considered 'wide open' and allows maximum light onto the sensor.
This is useful for low light conditions with subtle movement in your scene. Alternatively,
if shooting subjects with a lot of movement, a narrow shutter angle like 90 degrees will provide
minimal motion blur for sharper, crisper images. The equivalent shutter speeds compared to
shutter angle depends on the frame rate you are using. For example, if you are shooting at
25 frames per second, then 360 degrees will equate to 1/25th, and 90 degrees will equate to
1/100th of a second.
NOTE When shooting under lights, your shutter can affect the visibility of flicker. Your
URSA Mini will automatically calculate a flicker free shutter value for your current frame
rate. It will display up to three suggested flicker free shutter options at the bottom of
the heads up display when adjusting your shutter. These shutter values are affected by
mains power frequency in your region. You can set your local power frequency to
50Hz or 60Hz in your URSA Mini's setup menu. See the 'setup settings' section in
this manual for more information.
Touchscreen Controls 83