GH4 and 14-140 stabilization issue

LingoDingo wrote:

Vesku wrote:

LingoDingo wrote:

Vesku wrote:

Anyway my issue is not related of exposure values. OIS jitter is different than motion jitter caused by slow framerate.

I've never seen anything I would call "OIS jitter" when shooting with any of my Lumix OIS lenses ( 14-45mm f/3.5-5.6 lens, 12-35mm f/2.8 lens, 35-100mm f/2.8 lens ), though I know that the OIS has it's limits. I consider OIS to be a jitter "smoother" for hand-held work, but I still use other camera stabilizers when shooting with an OIS lens. ( even a good pistol-grip is enough to get a clean shot if I'm not too tired )

What are you using to watch your videos. My issue is seen clearly in big quality TV (50" plasma). Motion handling in computer monitors are much weaker so it is harder to see issues.

Depends on the delivery platform. For most corporate videos that are going to be watched on the web or a standard 32 to 50 inch flat-screen I punch in to 1:1 pixel mode to check sharpness as I edit.

If it's going to be shown in a small theater, then I visit a designer friend that owns a 70 inch Sharp LED TV set at his house, to check the final edit.

I haven't shot much 4K yet, but I imagine you won't get full 4K resolution without a very stable camera, which often means a good tripod or jib to mount the camera on.

Keep in mind that most of the "jitter" you are seeing is from the person holding the camera, so if the lens stabilization is not enough, then you've got to add some sort of stabilizing rig for the camera. ( I can get by with the 12-35mm f/2.8 with a pistol-grip using just the OIS, but 35mm is a LOT shorter than 140mm )

But there is no jitter in my 14-42, 45-200 and 100-300 MEGA OIS lenses. Even 300mm handheld is pleasing to watch, often better than 14-140 at 14mm !?

That seems really odd. Why would this lens be so much worse than the other zooms ?

I completely believe what you are saying, but it does seem strange that Panasonic can get it right on other lenses but not this one ?

If he's seeing the issues at 14mm, I'll assume again it's focus pulsing that he's having issues with rather than the ois.    The lens design of the 14-140 II is such that the focal length changes with focus (breathing), so the whole image pulses/zooms when the focus makes small adjustments.   If the lens didn't breathe, you wouldn't notice the focus pulsing much.

So the other lenses may not breathe when focusing and/or may not be as susceptible to pulsing the focus as the 14-140.

I had to return the whole setup, since I wanted an all in one zoom for casual video use, but the focus pulsing on static scenes drove me batty.