I have a nikon d5100 camera with 35mm/f 1.8 lens. I'm not sure what's going wrong with my camera but my photo with larger f-stop numbers is brighter than the photo with smaller f-stop numbers (the ISO and the shutter speed remain the same). Isn't that the photo supposed to be darker on bigger f-stops?
Edit: I'm clearly understood with how aperture works. Just transferred the file into the computer and I have only realized that it was my fault for activating the "AUTO ISO sensitivity control" that messed up the shutter speed and the ISO for the photo I have taken.
This is the link that I have referred to: https://www.dummies.com/photography/cameras/nikon-camera/controlling-iso-with-a-nikon-d5100/
My camera is working fine after turning off it. Thank you to everyone who has given an effort in solving my problem.