Originally Posted by Ungermann
You won't be able to close the LCD. This battery is similar to the VWVBG6. So, have you tried those $20 batteries you bought? Do they work?
Originally Posted by hazydave
That's pretty much the case. There are a few "edge conditions" in which OIS can be an issue. It is, after all, a mechanical or electromechanical system -- they're detecting motion and moving lens elements to counter the motion... brilliant. This one thing delivers a much greater correction area than EIS.
This is not to say that EIS couldn't be better, and couldn't be unobtrusive. The problem is, given that EIS is always seen as inferior to OIS, no one's going to spend more to build a much better EIS system. EIS works by moving the "video window" over a larger than necessary sensor area. This means you need a larger sensor and larger lens... the two most expensive parts of the camcorder. Or you shrink the image a bit and steal the pixels... that's where the EIS impairs the quality of the video.
The OIS edge condition I ran into was some weird vibrations. Travelling in the back of a jeep, I was getting some resonances between the motion vibrations and the OIS system in my Canon HV10... to the point of the HV10 going nuts. This is why OIS cameras aren't used in helmut cams, cameras that take lots of abuse, etc... the OIS elements are also a bit fragile, compared to a non-OIS lens. But for most purposes, OIS is a clear win.
As mentioned, there's no mandate that EIS affect picture quality, it's just the likely implementation.
One use for it still is the use Sony found in their latest models -- roll correction. That's fairly brilliant. This is to correct motion about the axis of the lens... a situation the OIS system can't correct. This is the ideal place for EIS. There's also less need for extra pixels... some need still, but you're going to let OIS correct for X and Y motion, and just use the EIS for Z. Which means the EIS is just rotating the image captured by the sensor. A square sensor could currect any roll.
That's primary a warning to avoid the "rolling shutter effect" .. also a perhaps a wanting about clobbering your video quality due to swamping AVC with motion. Neither of these is a Panasonic-specific problem. Hmm... "The Rolling Shutter Effect"... sounds like a new indie band. I might even be in it...
here is his response.. he tells me he made a mistake when describing it... HE says (and I already knew) not to use OIS when on a tripod.. everyone knows that (I HOPE)...
Instead, the symptoms described sound like a classic case of OIS fighting the tripod. In other words, OIS is fighting the intentional movement of the pan (or zoom). The remedy is to switch OIS to Tripod Mode (which is an admittedly facetious way of saying that OIS should be turned off when the camera is on a tripod or any other form of mount that isn't handheld).http://www.dvinfo.net/forum/archive/.../t-239639.html
Handheld in daylight, OIS is a very good thing -- but using OIS on a tripod can cause stuttering in pans and zooms. Bright lights at night can introduce unwanted "fireflies" if OIS is on. There is a proper time and place to use OIS, and a proper time and place to leave it off.
OIS does nothing to assist intentional camera movement (such as panning to follow a moving subject); the purpose of OIS is to dampen *unintended* camera movement (see below) and it can't do that from a tripod (except maybe in breezy or windy conditions, maybe).
Here's what the "OIS + tripod" artifacts look like --when panning: a "bump" in the image at the end of the pan. For example when panning left to right, at the end of the pan, you'll get a little bounce in the image back to the left, followed by a slight slide as it returns to the right and settles down. When changing focal length: a "bump" or a hiccup in the image at the end of the zoom, especially when going in to telephoto. At the end of the zoom, you'll get a slight pulse in the image as if it were going slightly wide and back in again. This is unwanted movement of the image (not the camera, but the image) in both cases.
Remember that OIS is intended to dampen a particular frequency range, most commonly the type of low-frequency vibration that's transmitted from your hands to the camera by the blood coursing through the veins of your hands, but also other types of situations where the camera is subjected to vibration within a certain frequency range.
However, on a stable mounting platform such as tripod, these vibration frequencies don't occur... but if OIS is left on, it goes to work anyway, and now it's working against you, because the *only* sort of vibrations it can detect now are the *intentional* motion inputs you're giving via panning and zooming. Having nothing else to fight, OIS does its best to counter that movement, resulting in the little glitchy stutter that occurs at the end of a pan and the end of a zoom. For this reason, you turn OIS off when shooting from a tripod.