Hello! I noticed that every once in a while my D750 image dimensions change. It seems random, every few photos. Normally photos are 6016x4016 but every once in a while it changes to 6016x3376. These are raw files without any processing done to them. I scrolled back through an older session on my camera and noticed a little FX sign disappears when this happens. No lens changes were made and I was using my newer tamron 24-70. I attached some screenshots. Any ideas what’s going on? Thank you!