Originally Posted by AlenK
I don't mean to doubt you but where did you get this information?
That information was on one of the review sites, don't remember which. The panny's(600,700) have a build in ND filter that silently slips in when needed, and you have no control over it.
The only way to detect this is to point your camera when its on at something bright, and look through the lens-quickly. You'll see a little dark piece of "film" that has slid into place.
Most all consumer camcorders have something like this, yet you'll never find any information about it anywhere. But, you can notice it in going from a dark scene, immediately to a bright seen. It's not just the aperture that is closing down. First you'll notice an immediate darkening(on the LCD)-this is the ND filter sliding into place, then you'll notice the scene brightens a bit, that means auto-exposure has taken a reading and set the aperture.
However, this build in ND filter will not be strong enough for you to use 1/60, or even 1/120 on a sunny day. You may need an ND4, ND8, or both, filters on the camera to do that.