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DC120 Aspect Ratio

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by

Mike Mitchell

on 15 October 2014

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Transcript of DC120 Aspect Ratio

• Width-to-height ratio of an image.

• An aspect ratio of 2:1 would mean 2 units
wide by 1 unit in height.

• An image 12 centimeters wide by 6 centimeters in
height would be 12:6.

• Simplifying the fractions would result in 2:1.

Aspect Ratio
Resolution
• The more pixels in an image, the greater the
resolution of the image.

• Spatial resolution is the pixel count of the
image (1920 x 1080 pixels = 2,073,600 pixels).

• It’s the primary measurement of an image’s
resolution.
NTSC
• The most common video format (defined by
National Television Systems Committee).

• Video standard in U.S.

• Displays a resolution of 720 x 480 (Standard
Definition) at 30fps.
HDTV
• General purpose term for High-Definition
Television.

• Significantly more resolution that NTSC.

• Most formats are progressive scan but there
are some interlaced formats (1080i).

• Square pixel format can handle 8 and 10 bit
color resolution.

• Most common you’ll encounter are 1920 x
1080 (interlaced or progressive) and 1280 x
720 (almost always progressive).
Aspect Ratio
5K resolution (available on high-end HD cameras such as the RED EPIC) is 5,120 pixels horizontal by 2,700 pixels vertical. This equals 13,824,000 pixels compared to the 2 million you have on an HD television.
New 4K televisions are being touted as the
next, "must have" item. 4K gives you 4096 x
2160 pixels or nearly 9 million pixels.
However, unless you're sitting right in front of
your television, you won't really notice much
of a difference.

• This kind of resolution is important for really
big screens, like those found in a theater.
Full transcript