I remember seeing the photo above on Flickr once, and having my brain melt slightly from trying to figure out what went wrong. The issue was the propeller was rotating as the camera detector ‘read out’, i.e. there was some motion during the exposure of the camera. This is an interesting thing to think about, lets have a look. Many modern digital cameras use as their ‘sensing’ device a CMOS detecto
![The Math Behind the Rolling Shutter Phenomenon](https://cdn-ak-scissors.b.st-hatena.com/image/square/b28f4bf3bd7d2c1256e4d4f717830c93e6f2a3bb/height=288;version=1;width=512/https%3A%2F%2Fpetapixel.com%2Fassets%2Fuploads%2F2014%2F10%2F3192314056_e0df39ed3c_z.jpg)