https://www.theverge.com/2017/8/19/16173784/total-solar-eclipse-photography-no-filter-dslr-camera-zoom-lens

The solar eclipse set to take place on August 21st is going to be a sight to behold — provided you have the proper protection for your eyes and camera. Looking at the sun can cause permanent damage, but if you’re not careful, you can also destroy your camera.

The employees from Dubuque, Iowa’s Every Photo Store decided to demonstrate what would happen if you try and and shoot the eclipse without a filter for your camera. They hooked up a DSLR body to a Canon 400mm f/2.8 IS II lens, and set shutter to six seconds. In that time, the light began to melt the camera’s innards.