Sayeed

Hi, I had purchased my x100t in 2016 and have used it moderately. i took out the camera after 1-2 months, which was kept safely without battery and card since I was travelling and didn't need it I find when I select f8 on the aperture ring, the value on lcd in f2.8 and if I selected f16 it is showing f5.6. Basically the wrong values please suggest how I can fix this at home thanks Sid Mumbai, india