Blackmagic Design Video Assist Manual De Instalación Y Funcionamiento página 27

To zoom into the vectorscope display:
Blackmagic Video Assist 12G HDR
1 Double tap the display for 2x magnification.
2 Double tap again for 4x magnification.
3 Double tap a third time to return to standard viewing size.
Blackmagic Video Assist 4K
1 Tap the screen to reveal the magnifying glass icon.
2 Tap the magnifying glass icon once for 2x magnification. Tap again for 4x magnification.
3 Tap a third time to return to standard viewing size. To hide the magnifying glass,
simply tap outside of the icon.
Histogram
The histogram shows the distribution of the luminance or the black to white information along a
horizontal scale, and lets you monitor how close the detail is to being clipped in the blacks or
whites of the video. The histogram also lets you see the effects of gamma changes in the video.
The histogram shows the distribution of the luminance, or
the black to white information along a horizontal scale
The left edge of the histogram displays shadows, or blacks, and the far right displays highlights,
or whites. If monitoring the image from a camera, when you close or open the lens aperture
you will notice the information in the histogram moves to the left or right accordingly. You can
use this to check 'clipping' in your image shadows and highlights, and also for a quick overview
of the amount of detail visible in the tonal ranges. For example, a tall and broad range of
information around the middle section of the histogram corresponds to good exposure for
details in the midtones of your image.
Your video is likely being clipped if the information bunches to a hard edge at 0% or above
100% along the horizontal scale. Video clipping is undesirable when you are shooting, as
detail in the blacks and whites must be preserved if you subsequently want to perform color
correction in a controlled environment. When shooting, try to maintain your exposure so
information falls off gradually at the edges of the histogram with most forming around the
middle. This will give you more freedom later to adjust colors without whites and blacks
appearing flat and lacking in detail.
Changing Settings 27