QUOTE(sai86 @ Oct 24 2018, 09:57 AM)
no phone compared. i think i came across on one of the review that advise to stick to the 10mp camera by default rather than the 40mp. let me find back that review.
For purely brightness of the image.
Yes, the 40MP might darker than the 10MP assume they're using same sensor technology.
I try not to explain more technical term for you to understand easily.
Camera sensor is the little square electronic devices behind the lens. the main function is to capture light and convert it to digital information. the larger the sensor, the more light it can captured.
Ok, now you have 2 camera with same sensor size (lets say 2mm x 2mm). Inside the 2x2mm square, have many many small sensors, or we can call it pixels.
in 2x2mm, 10MP have 10-Mega pixels count
in 2x2mm. 40MP have 40-Mega pixels count.
To squeeze 40-Mega pixels count in to 2x2mm, the only way is to make the pixel size smaller.
So, pixel size smaller will be less sensivite to light.
Thats why, now you will see many smartphone/camera supplier they write pixel sensor size as well. like 1.25um, 1.5um. instead of writing the sensor format like 2/3", 1".
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if lets say the 2x2mm. 40-Mega pixels count, they come out with a new tech sensor which is very sensitive to light. we also can get same brightness like the old 2x2mm 10-Mega pixel count in image.