The pixels on them are not scattered randomly – they are in a grid. Calculating Image Size in PixelsĬamera sensors are rectangular. The only thing that a high pixel count surely promises is less moiré. It doesn’t mean anything until we don’t know other factors. But in itself, it doesn’t set a minimum level for detail. Indeed, pixel count poses a limit to how detailed an image can be. So, when someone says a camera has a 20MP camera resolution, they refer to the 20 million pixels on its sensor. One megapixel (MP) is one million pixels. Pixel count is in the form of megapixels. Their number is of importance, but it does not tell us everything about the resolution of a camera. There are millions of them – one by one, and they build a coherent image. Pixels are the smallest component of a digital camera sensor. Film also has a resolution – referring to the level of detail it can resolve. What Is Pixel Count?Ĭamera resolution is not equal to pixel count, although they often get mixed up, and used interchangeably. And even in those situations, you need detail, not necessarily high megapixels. There are two applications where you do need high resolution: extensive cropping (digital zooming) and large printing.
But how does that translate to real detail? Not so well.Ī very general answer is no you probably don’t. It’s cool, indeed, that even your phone is capable of shooting 20-megapixel photos. Megapixel and camera resolution have become catchwords. Let’s try to see through the marketing slogans.
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