OK Group, I was using my Nikon D 3400 today with my sigma 18-250mm and I had never noticed before, but now the LCD screen stays on for exactly 60 seconds and shuts off when I thought it used to be normal on eight seconds.( no matter what setting I put on the camera for it to time out )switched the lenses for two or three others that I had and guess what? now the camera times out the way it supposed to after four seconds (which I had adjusted to four seconds) I don’t know why the lenses make a difference. But intermittently the sigma lens would act correctly at timing out the LCD screen on four seconds. I don’t get it all I can tell you is that that’s what it’s doing .
OK Group, I was using my Nikon D 3400 today with my sigma 18-250mm and I had never noticed before, but now the LCD screen stays on for exactly 60 seconds and shuts off when I thought it used to be normal on eight seconds.( no matter what setting I put on the camera for it to time out )switched the lenses for two or three others that I had and guess what? now the camera times out the way it supposed to after four seconds (which I had adjusted to four seconds) I don’t know why the lenses make a difference. But intermittently the sigma lens would act correctly at timing out the LCD screen on four seconds. I don’t get it all I can tell you is that that’s what it’s doing .