Blackmagicdesign HyperDeck Shuttle Manuál s instrukcemi stáhnout pdf (Strana 45)

Using Blackmagic UltraScope

Waveform Display

The Waveform Display is similar to traditional composite waveform monitors seen in many broadcast

studios. On Mac OS X, the Waveform Display always shows the luminance view and the B/W button is

permanently selected. On Windows, select B/W for the luminance only view, COMP for the composite

only view, and BOTH for the twin luminance and composite view.

Select B/W for the luminance view which provides a digitally encoded waveform similar to traditional

luminance waveform monitors. The luminance view is very useful when adjusting luma (brightness) levels

in an image. Turn on the GAMUT function, and any illegal luma levels will be highlighted in bright red, so

they are easy to see. Instructions for setting luma limits can be found in the Error Logging Display section

of this manual. Traditional luminance waveform monitors only supported composite analog standard

definition video. However UltraScope’s luminance view works in high definition as well as standard definition,

so you have a consistent and easy way to adjust luma levels even when monitoring high definition digital

video formats!

For Windows users, the composite view is exciting because it’s a fully digitally encoded composite

waveform view and similar to a traditional waveform monitor. This provides a much easier way to align

to test signals, such as color bars, because you can use the composite waveform exactly the same way

as it has always been used. Composite view also works in high definition, so you have a consistent and

traditional way to adjust video even when working in high definition!

When BOTH view is selected on a Windows PC, the composite and luminance waveforms display side by

side in a twin view. This is incredibly useful when adjusting video levels or color correcting. It’s impossible

for a vectorscope to show which objects in the video have color because a vectorscope just shows what

colors are in the whole image and not which objects have color. When color correcting, you often need

to look for specific parts of the image, remove the color and produce a neutral state. This is because the

composite waveform is the same as the luminance signal but with chroma added.

Choosing this twin view makes it easy to identify similar items in the luminance and composite waveforms,

and if more blur or chroma is observed in the composite area, the item has color. If some part of the

video image is neutral gray, then it should look the same on both waveforms because no chroma will

be present. With the twin view, you can look around the waveform and see the levels of color or chroma

of various objects. As you color correct, the composite waveform will display more or less chroma in

the video signal. Now you can see if specific objects in the video image are color or black and white.

You can make technical and creative decisions using the Waveform Display.

When the Waveform display is zoomed in, you can toggle between COMP and B/W, and view the same

region of an image in the zoomed display.

Waveform Display on Mac OS X always shows Luminance view.

Waveform Display on Windows can show Luminance,

Composite or Both views.

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Blackmagicdesign HyperDeck Shuttle Manuál s instrukcemi Strana 45

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