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Re: 60i vs 30p for Full HD?

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Walter Soyka
Re: 60i vs 30p for Full HD?
on May 31, 2017 at 3:25:17 am

[Adrian Chircu] "My questions are, HOW? How is 60i better than 30p when doing slow motion with no noticeable difference in artifacts if it`s basically almost the same thing as 30p? Why does the video get darker when using 60i and brighter when using 30p?"

60i is not basically the same thing as 30p.

60i means that you have 60 fields per second (where a field is every other line in a frame). 30p means you have 30 frames per second. 60i trades away spatial resolution for temporal resolution. In other words, you are taking twice as many pictures per second, but they are essentially half-res.

Your camera is probably using a faster shutter speed with 60i than it is with 30p; remember, it's taking twice as many pictures per second. That means less light hits the sensor in every exposure, so the image is darker.

Walter Soyka
Designer & Mad Scientist at Keen Live [link]
Motion Graphics, Widescreen Events, Presentation Design, and Consulting
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