Understanding Megapixels: What Does “MP” Really Mean?

Ever wondered what “megapixel” or “MP” actually refers to? Let’s break it down!

What is a Megapixel?

A megapixel (MP) equals 1 million pixels, where a pixel is a tiny square unit on a camera sensor. The sensor itself consists of rows and columns (X and Y axes) filled with these pixels.

For example, the Sony A7 III has a 24.2MP full-frame sensor (35.6 × 23.8 mm), producing images with:

• 6000 × 4000 pixels (3:2 ratio) = 24MP
• 6000 × 3376 pixels (16:9 ratio) = 20MP

Key Takeaways:

1. More megapixels ≠ larger sensor – It only means higher image resolution.
2. Changing the aspect ratio reduces resolution – As seen in the 16:9 crop example, where 24MP drops to 20MP.
3. Advancements in technology – Even small smartphone sensors can pack high pixel counts, comparable to larger camera sensors.

Does Megapixel Count Really Matter?

How important are megapixels? What are the most common sensor types today?
Stay tuned for the next article as we explore these questions in depth!