Pixel Pitch: Does Camera Pixel Size Actually Matter?
Ask around and you will get a confident answer: bigger pixels are better. They gather more light, so they produce cleaner images with less noise, which is why the low-megapixel low-light specialist supposedly beats the high-resolution body when the sun goes down. It is one of the most repeated ideas in photography, and it is mostly wrong. Not entirely wrong, which is what makes it stubborn, but wrong in the specific way it is usually meant.