https://www.youtube.com/watch?v=v2Xs-aIpscA&t=14s
This could be the best camera review for this phone.
It is supposed to be a phone.
at 0:29, you can see a summary of the phone specs.
Except that no mention of IOS for the 5x optical zoom.
At 1:50, he explains the principle behind the claim of 5x optical zoom. It is actually false.
There is only a square root of 15 (3.9) optical zoom. It uses an 8Mp sensor, but only uses 5Mp of the output. The rest is thrown away. What a waste.
I would rather have 8Mp at 3.9x optical zoom so that I can have an effective 120Mp resolution, but this is too similar to zoomed in from 108Mp picture. Very little advantage. In fact may be a disadvantage because of its high aperture value of 2.0.
The 2x optical zoom only has 12Mp so its effective Mp is only 48Mp. Better zoom in from the main camera.
Why not have 12Mp for the 4x optical zoom? It has to do with size of sensor. To keep similar pizel size, you need to increase its sensor size, requiring longer focal length for 4x optical zoom.
There is a depth sensor camera. why not convert one of the camera as a depth sensor as well?
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