I heard the Surface duo having an 11 megapixel camera, but able to record 4K, whereas I have a camera that’s 20 meagpixels but only 720p, and the camera on my phone is 13 megapixels and 1080p. Can you please tell me why? Does it have to do with sensor size?
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Thank you in advance.
In: Technology
Pictures are just lots of little coloured dots, each of those dots is called a pixel. If you have 4000 pixels in height, and 5000 pixels in width then you have 20,000,000 pixels, or 20 mega (million) pixels.
Videos are like lots and lots of photos stitched together. 30 frames per second is 30 photos per second. If you’ve ever looked at the file size of one of your pictures, it’s pretty big. To take, and process, and stitch together and then store 30 (or 60 if in slow mo, or 120 if you’ve got super slow mo, takes a lot of processing so while some phones can take big photos with lots of pixels, they can’t keep up when doing video at that rate so they do smaller size.
When movies say 720p or 1080p or 4k they are talking about the number of pixels in height. More pixels generally (but not always) means more detail / better picture but just because the sensor can take that many, doesn’t always mean the phone can keep up with processing them all.
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