You're missing a few details.What ISO?What shutter speed?
Here's an example of Canon 6D (yes it's full frame, but I get almost the same out of my 7D that is crop)ISO 6400Samyang 14mm lens25 second single exposure.
https://preview.redd.it/tyniusqir64c1.png?width=628&format=png&auto=webp&s=4ba9beebbb74ab3706600649122299ed4d1ec84b
You're missing a few details.What ISO?What shutter speed?
Here's an example of Canon 6D (yes it's full frame, but I get almost the same out of my 7D that is crop)ISO 6400Samyang 14mm lens25 second single exposure.
https://preview.redd.it/tyniusqir64c1.png?width=628&format=png&auto=webp&s=4ba9beebbb74ab3706600649122299ed4d1ec84b