08-25-2020, 09:33 AM
(08-25-2020, 08:01 AM)rich2005 Wrote:Quote:..I have some images saved, in the past I reduced the size of the images a lot to save disk space (for example, I reduced an image from 3840x2160 to 1280x720, that is, 200% reduction..
That is one-third the size of the original, two-thirds of the image information has been thrown away, never to come back.
Hmmm. 3840×2160=8294400 (a bit over 8Mpix), 1280×720=921600 (a bit under 1Mpx). So the result is 11.1111%
of the original, in other words close to 90% of the image has been thrown away.