This is the first time lapse video I made using the Panasonic GX7.
The GX7 has an inbuilt intervalometer which is really convenient while making time lapse videos.
Setting up the intervalometer is also very easy. There are three things to set up, namely the start time of when you want to start, the number of shots you want to make, and the interval between each shot.
In the video below, I've set the interval to 2s, and the shutter speed to 1/10s.
To shoot a time lapse, you should use the manual mode. Set up the shutter speed and aperture you need, then adjust the ISO -- you can't have auto-ISO or the exposure will flicker. Also important to turn off image stabilisation on the lens and camera. I also use the silent shutter to reduce shutter shock and keep it quiet in the library.
In the video above, the first half was shot with the Olympus 9-18mm. You'll notice the jitter, some slight zoom-in and out, because I forgot to turn of the image stabilisation.
The second half of the video was shot the following day with the Panasonic 7-14mm. I had turned the stabilisation off after reviewing the first day's footage. The jittering is gone.
Generally speaking, a 2s interval for people is what I normally use. If you need more motion blur, just reduce the shutter speed to slower than 1/10s.
The upcoming GH4 will have an in-built intervalometer also.