Why are there colored edges around the products taken by my Canon camera?

Hello! Personally, I think there are two ideas:

Personally, I think it's caused by blocking pearl cotton. Because after you add the light bar, the pearl cotton is used as a reflector after flashing. Pearl cotton is a kind of foam particles. In the particle state, the light will be divided into small spots on different faces, and a halo will appear between the spots. So I personally think that pearl cotton is unnecessary. You can take a piece of white cloth or white paper if you like. A surface is flat and smooth.

In addition, I also think that since the light bar is added, why should the sensitivity be 800, which may also cause rough picture quality? You can set the shutter to 80- 100.

In fact, according to the different environment, everyone's pursuit of photography is different. You can boldly try to highlight the line sense of the object with low tone and darkness.