My 60 day old K-50, only 2 days out of warranty started giving me dark pictures thru the viewfinder, and immediately afterwards---as in fractions of a second later, the exact same picture thru Live View would be fine. I noticed that the parameters were changing when I switched between viewfinder and live view, moving nothing, holding the camera steady, and the ISO, or shutter speed, or F stop would change just by switching between viewfinder and live view, done in fractions of a second.
Per Pentax, I sent this to Precision Camera on my $16 dime, they replaced a Diaphramg Control Block [their spelling].
Now it is doing the same thing---dark thru viewfinder, then immediately fine thru the live view. See pictures below.
Am I doing something wrong?
If not, should I endure another repair? Is the diaphragm control block causing this error? I want a different camera, as I suspect something is blowing the diaphragm control block, and it will always blow. I will call Pentax, again, tomorrow morning.
Your thoughts?