That is absolute nonsense. Megapixels is a measurement of the number of pixels, and has absolutely nothing to do with the size of the pixels.
The only time the size of the pixels matter at the time of photon capture. Bigger pixels mean they're better at capturing light, so will perform better when there's less light. However, once the sensor data is written to an image file, every pixel is treated equally.
Megapixels might tell you how many pixels are crammed onto a sensor, but sensor size—surprise, surprise—plays a massive role in detail, especially when you zoom in. Bigger sensors, like full frame or APS-C, have larger photosites, even at the same megapixel count, compared to the tiny sensor in an iPhone Pro. Larger photosites capture more light and finer detail, which absolutely translates to better resolution and clarity in the final image—especially when you’re pixel-peeping or cropping.
The quality of the data captured by those pixels isn’t magically equalized because it’s saved as a JPEG or whatever. A bigger sensor with better dynamic range and less noise doesn’t just vanish in post-processing—it’s baked into the image. That’s why a 24MP full-frame camera will mop the floor with a 48MP iPhone sensor when you zoom in
Last edited by a moderator: