Originally posted by First Poster Ideally, the shot should have a small amount of DOF, but not too much, probably around f14 or so.
DOF works the other way around. F/1.7 will be a very small depth of focus, f/14 will be a lot. f/1.7 will let in a lot of light, f/14 a very small amount. I'm not familiar with movie mode, never use video, so I cannot help you there but it sounds as if the camera is adjusting the ISO to maintain the same amount of light when you change the aperture. For stills I would turn off auto-ISO and set a fixed number. Not sure you can do that in movie mode or not.