The HTC One's photosite size is comparable to that of a 'enthusiast compact camera' such as the Panasonic LX 7. However, sensor size itself is still the same as on any other smartphone, i.e. the total light gathering capability is no different.
( 其實HTC one 進光量是一樣的. )
又, By d3xmeister (1 day ago) That's, right, you can put full frame pixels in a 2MP camera phone, the image will be camera phone quality, maybe even worse. Sensor size is what matter, to put it simply to you: What amount of light is used to produce the photo ? If you take a half sensor for example, it will capture about half of the amount of light. You can make it 1MP, it will actually make the photo worse, since resolution does matter when it comes to image quality, and the amount of light captured will still be half.