Can shoot one (sometimes 3-5) frames OK then viewfinder will darken and I can't focus for next shot. I found that if I remove lens, push the little lever in the lens opening counter-clockwise (up) then it seems to reset and I can shoot again, same as above. So, I know how to make it go again, but removing the lens 5 or more times in 36 frames isn't how it is supposed to work! Does this with all lenses, 5 or six so it's in the camera body. What's maddening is it will seem to be fixed then malfunction again Anyone with a solution? Or experience? This body was bought on ebay to replace a 7000 that went belly-up. I have the old 7000 body and the little lever gizmo looks similar but moves clockwise quite a ways, this one doesn't do this. Otherwise, all other functions of this 700si seem to work. Like to shoot film once in a while, guess it's back to my Canon AE-1 Program...thanks.