GH4 and 14-140 stabilization issue

Vesku wrote:

LingoDingo wrote:

Vesku wrote:

LingoDingo wrote:

What frame rate and shutter speeds are you using when you shoot ?

I use 1080/60P 100mbs. I tested today all shutter speeds from 1/60 to 1/1000 and apertures 3.5 to 22. There is no meaningful difference when using all the exposure combinations. Very slow shutter speeds obviously smooths image vibration a bit.

For frame rates up to 30fps, "180 degree" shutter is the rule of thumb for film-making, which translates to 1/(2 * Fps). So for 24fps, it's 1/48th second shutter.

With the GH4 you can set the camera to use xx degree shutter settings as opposed to traditional photography shutter speeds.

For frame rates over 30fps, the standard shutter formula becomes 1/Fps, so it's 1/60th second for 60fps.

With my GH3 I use 1/40th second shutter for 24fps, because the slower shutter creates a little more motion-blur which helps to smooth out motion jitter.

I find non-electronic lenses are better when it comes to eliminating jitter, which I think is mainly due to the softer image they produce, so the jitter is not as obvious. In post I do not sharpen footage shot with Lumix lenses ( and I set my GHx cameras to as little sharpening as possible when shooting ), while with non-electronic lenses ( mainly Nikon AI-S glass ) I add a fair bit of sharpening in post.

I am a little worried because I just paid 2000 euros (about 2600 dollars) for a kit which shoots unwatchable vibrating videos.

Try other lenses ( especially non-electronic lenses ), as things can look very different with another lens.

Thanks for lecture of shutter rules. I still like to break those rules sometimes. Anyway my issue is not related of exposure values. OIS jitter is different than motion jitter caused by slow framerate.

I shoot handheld so I need stabilization. I dont like soft video. The new 14-140 is a fine lens - great photos, fast AF, very good contrast, 10x zoom. I just must figure out a solution for fast OIS jitter in static video shots. Dont suggest tripod.

The jitter is a big issue for 4K, and not just from your lens. Do you shoot using the viewfinder or the lcd? Using the viewfinder up against your face adds stability compared with holding the camera with arms extended to view the lcd. There are holding techniques that help with stability. If you do not want to use tripod/monopod you might try practicing these techniques. Maybe they work, maybe not.

I am with you; I cannot carry around a tripod.