Sabtu, 09 November 2013

what microphones should I use for film recording?

Q. Hi,
Me and a few friends are looking to create a pilot episode of our own Tv show, just for fun. We have already purchased our HD camcorders and tripods etc, but now we are looking for some clip of recording microphones so we can get perfect sound.
We basiclaly want a microphone which can clip on the shirt and records the persons voice, and then upload this and sync it into our video so everyone can be heard easily...
Any ideas of which ones to go for or prices??

Thanks guys

A. Lavaliere mics - decent ones - are not inexpensive. For that matter, any "decent" mic will not be inexpensive.

We don't know which camcorders you have so we don't know if they have a mic jack. But your post reads like your camcorders don't have a mic jack. That means you'll need some sort of field recorder - or if you have one, you did not tell us which you are using. If you don't have a field recorder, then look into those by Zoom (H2) or Edirol or M-Audio or Marantz or Tascam... there are others, too.

Because of the way you described the audio capture environment, the person wearing the mic can also wear the small field recorder. Most of the low-end field recorders have a 1/8" (3.5mm) stereo audio-in jack. Using a splitter, you can connect two mics... but lets stay with one for now.

Since the cable between the mic and the filed recorder would be short, you won't need to worry about the unshielded cable possibly picking up interference. For your needs, it is likely a low end, wired, "tie clip mic" will be good enough to plug into the field recorder.

Another method would be to plug the mic into your computer and record the audio. Audacity is a good audio manipulation software package.

You just need to learn which audio stream compression and method to use to sync up nicely with your video editor.

If you need more than one person's audio recorded and the cables don't work then you need to go wireless. The clip on mic connects with a wire to a body pack. The body pack connects wirelessly to a base station. The base station connects to the audio recording device (camcorder with audio-in jack, fiedl recorder, computer, etc.). I can't recommend any of the low-end units that use FM, or any of the shared frequencies (900 MHz, 2.4 GHz, 5.4 GHz). Because these frequencies are shared (wifi, garage door openers, home portable phones, microwave ovens, etc, they will pick up interference and ruin the captured audio. UHF is best - VHF is OK... these can get pricey very quickly.

The Sennheiser G3 systems I use start at about $600 for a lav mic, body pack, and portable base station. The big base stations that are not camera mounted will reduce the price a bit.


Another question about optical vs dynamic zoom in a camcorder?
Q. I know the difference between optical zoom and dynamic zoom in a camcorder. What I don't understand is a camera advertised as having 38X Optical/65X Dynamic Zoom. Does that mean I can choose between the two kinds of zoom techniques when I film? Could I mount the camcorder on a tripod and use both techniques for a total zoom of 38 x 65 = 2470 x magnification and use it to take telephoto pictures of Venus, Mars, and Jupiter? Thanks.

A. One, it's optical vs. *digital* zoom. Not "dynamic.

Two, no. The two zoom methods don't get applied serially. The "65x digital zoom" is with some digital zoom applied (a bit less than 2:1) after the lens is at its full 38x zoom.





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