The next time you’re at a social gathering and you mention the word ‘megapixels’, chances are that you’ll hear people talk about their cell phone cameras. This is hardly surprising since camera phones are ubiquitous, and the image resolution is often the make-or-break feature. But it’s been a well-known con for a while now that more megapixels on your mobile camera do not imply better image quality.
Your camera’s ‘eye’
In a nutshell, one of the main reasons why DSLRs churn out great quality photos is because their image sensors (which detect light and convert it into pixels) are large. ‘Full-frame’ DSLRs like the Canon EOS-1D X and Nikon D4S have sensor dimensions of 36x24mm i.e. 864 mm2. The image sensors of most high-end mobile phones like the Apple iPhone 6 and Samsung Galaxy S6 range between 25-30 mm2, making DSLRs approximately 30x larger. The sensors of high-end compact cameras are generally between 100-250mm2 making them, on an average, 6x as large as those on mobile phones.