Many people have removed the 30 minute time limit for 4K on the G7. There is a Youtube video and Reddit thread with instructions. Didn't work for mine though.
You really don't need long zooms when doing Video unless you are going to shoot Lions in Africa! Panasonic, Olympus cameras have a 2x crop factor on the lens you use. You Have to go really wide to use one well for video. And manual focus usually works better than auto most of the time. Low light is MFT weakness, so you need fast lenses to make them work. That is why most use a Speed Booster to help with that.
There is Nothing really wrong with a GH4. Tons of great stuff have been made on them, and will continue to be made on them. But right now a ton of new stuff is coming out fast from every manufacture now that video has "caught on" LoL. Just having the latest and greatest really doesn't make anyone a great filmmaker, skill does that, and skill can be used on just about any camera made in this day and age to produce an acclaimed film. It is a fun hobby, an expensive one, but well worth it. You might even make a living doing it! Best advise is to is to shoot, shoot, shoot, and edit, edit, edit.
I have a question about microphones. I need two microphone with xlr that can take up two casters with good quality. I don't know anything about microphones. Any one have any sugestions ?
More info:
These microphones are going into a extern sound card with two xlr in.
Then the sound card is connected through USB.
These microphones need to take up good speech sound from two people.
I need to use them for panels and film making.