The
process in which a particular colour aspect is replaced by another on
a video is called the chroma keying. It is used for background
replacement on videos
Essential
elements for a chroma key
Choice
of Screen
Initially
the chromakeying
was done in blue whereas now it is used in green color. This is
because green screen require less light to enlighten the
surroundings. In the past, the main color for chromakeying was blue.
Beginning in the late 1970s, there was a slow industry flip-over to
green-colored screens for chroma. A person's skin tone however
doesn't have an impact on the either of the colors. But the color of
dress has an impact.
Fine tuning
The
chroma effect play a major role in editing the videos. For a
thriving effect, it is essential to to provide a even lighting for
the background and the object should be placed far from the
background. This eases the editing work.
Influence Digital effects
Nowadays,
with the availability of the video backing tracks, we can take the
digital backgrounds from it and key it. This provies stunning rich
effects for the videos. This is much cheaper and replaces the bulky
light effects
Professional results
A
background evenly lighted and perfectly placed works wonders. The
green screen strikes the true quality and keys the object. An
effective use gives a professional look even for a simple video
Determine the room available
Ensure
that the object is far placed from the screen to avoid shadows
collapse the screen. For a smaller picture, no much area is required.
But a full picture requires a larger area. Outdoors shoots can be
done considering other influencing factors like breeze, sound, etc.
Type of Screen
Foremost
we have to decide are we going to use a green or a blue screen. Green
is used for digital effects and requires less light than blue color.
But still blue can be used where green is inappropriate. A foam
backed cloth helps to spread the light uniformly and can be stores
with ease as its wrinkle free. Also foldable chroma suitable for
outdoor shoots are available.
Type of Camera
The type of camerra that is been used has a great influence to the green screen. A HD camera gives good results coping up with the key since the pixels are smaller. A camera with lesser color compression doesn't match with the chroma.
Final Touch
Even
after the task completion, if the chroma effects are not eye
catching, the after effcts can be done using the software.
Using this we can remove the unwanted effects on the object.
When
we have a good key, our skill lies in the manner of setting up the
object as per the background and matching the color. On a whole,
effective lighting effects will give good outcome. The skill of good
chroma can be obtained only with professional experience. By taking
into consideration the above factors, the chroma key would give
ultimate results.
No comments:
Post a Comment