Every electronic product I've bought from Amazon has had problems. I'm to the point I won't even buy shoes from there because I'm not sure if they're actually Nike's or just rebadged crap. My PM2 was from Amazon. The 12-42 kit lens has a weird grinding noise during zoom. The camera's shutter sometimes doesn't close all the way and the bottom 100 pixels or so are over-exposed so I need to crop. Plus one the of buttons wasn't working when I got it but that has broken-in I guess. Anyway, how do I know if my IBIS is working? I have both native and manual lenses. Even when I use the native lenses I set it for the right focal length (although I don't think I have to). I take 10 images with IBIS on and 10 images with it off and the ones with it on are really no better than the others! I've tried using delay shutter by an eighth or quarter of a second to no avail. It's not shutter shock because it works fine on a tripod. I can get good images from the 14/2.5 down to 1/4 of a second but that's due to the wide angle and steadiness of my hands, not the IBIS. When I use my 50/1.7, however, I need to have a shutter speed of at least 1/200 whether the IBIS is on or off (yes, I have it set at 50mm). Since that 50mm is 100mm equivalent, I had hoped I could hand hold it at 1/100 with IBIS off and I was hoping I'd gain two stops with it on so I could use 1/25 handheld. But not even close. My 40-150 at 150mm can't be handheld at all at 150 unless if it's really sunny and you can get 1/300. I mean, could it have been broken to start? How do I know for sure?