lumix g lenses

The 14-140 is the kit lens, 14-45 is an alternate kit lens, 20mm is out, and 45-200 is out. Don't know about the 7-14 or 45mm though.
 
Note that only the 14-140 is specified to have "Movie support" which means it is the only lens that can do continuous focus & aperture changes while filming video.
 
The 20mm has video support as well, it is specified by Panasonic and I can confirm it.
But so far it is only the 14-140 that has "silent" focusing while you can hear the 20mm.
 
Because of the small size and the way the servo works I've heard that the 20mm makes noise even while manual focusing.
 
If the room is extremely quiet, you might be able to hear something but if someone is talking and there’s an echo in the room, you really can’t hear anything unless maybe if you’re trying to hear it.

In scenes of a documentary that I’m shooting, not only did I worry about the auto focusing being much worse than the 10x lens in the video mode, I also worried about the audio. Anyway the audio wasn’t as bad as I thought it would be and I was using the built in mic and although the focusing was rough in some areas, it was actually good most of the time and I had the lens set to f/1.7.

Still, I used an ISO of 100 and if I were to do something like that again, I would change the ISO to something like 200 to 320 and the f stop to something like f/2.8 depending on the lighting condition. That’ll decrease the chances of the main subject being out of focus unless your subject is very far like if your outdoors because it’s actually much easier getting very good focus with an Aperture of f/1.7. Now if you need something like f/4.0 or higher than you might as well use the 10x lens to increase the chances of your subject getting into focus.
 
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Panasonic probably wanted to keep the price at $400 and that might have made the lens more expansive than it already is. Another reason could be that Panasonic tried to make this lens as small as possible and adding extra technology might have made it bigger. I'm sure a future version will have it since things always gets cheaper and smaller.
 
A couple of days ago while in Boston I took some videos of skateboarders practicing their moves. Since it was very cloudy and getting dark, I figured it would be much better to use the 20mm lens rather than the14-140mm lens. I left it on the intelligent Auto setting.

In these videos you will see how the auto focusing reacts to many different obstacles and just keep in mind that I’m sure it was on f/1.7 at least most of the time and it’s not as easy focusing as it would be if it was on something like f/5.6.

As much as it would nice if this lens had a stabilizer, I’ve gotten so good that it doesn’t effect my shots that much as long as I’m mostly in one spot.

These are also good examples to allow you to hear for yourself if the auto focusing noise is a problem.

Anyway without further ado, here are the videos:
http://vimeo.com/7564010
http://vimeo.com/7564357
http://vimeo.com/7564640
http://vimeo.com/7564838

I’m going to have to do this on a sunny day in another time to see how much better the auto focusing will be.
 
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