I'm a beginner that's getting back into film photography after many years. I just received scans of my negatives and noticed some of them have streaking while others do not. I feel like this may have happened when the film was developed but I'm unsure. Perhaps it's the camera, the film or something I did? The film is Kodak Tri-x 400.

http://postimg.org/image/7gzeo6pr7/ http://postimg.org/image/9a2bciaxv/

Help?

Thank you!

I'm a beginner that's getting back into film photography after many years. I just received scans of my negatives and noticed some of them have streaking while others do not. I feel like this may have happened when the film was developed but I'm unsure. Perhaps it's the camera, the film or something I did? The film is Kodak Tri-x 400.