View Full Version : Infrared Question for HVX
Xhenchmen
10-09-2007, 02:11 AM
Hey. I've been trying to find some info on using an infrared filter on an HVX. Is the HVX's CCD's even gonna be sensitive enough to pick up infrared light if i got a screw on filter? Just curious to see if anyone has done any experiments.
THoff
10-09-2007, 08:57 AM
I haven't tried it with the HVX, but most cameras have filters in place to filter out the IR spectrum -- I wouldn't expect stellar results.
A few Sony and Panasonic consumer / semi-pro MiniDV cameras that have a Nightshot mode are the exception and let you bypass the filter.
Xhenchmen
10-09-2007, 02:40 PM
Right. I believe the HVX has a filter in front of the CCDs to block the IR. But wouldn't bet on it. I'm almost willing to throw the money down to buy an IR filter and see. But just to raise a concern of mine, does anyone see any damage to the CCD's by doing this?
THoff
10-09-2007, 04:29 PM
No, you're simply going to filter out the visible spectrum -- that won't cause damage. At best it'll work great, at worst you will have wasted the money on the filter.
Right. I believe the HVX has a filter in front of the CCDs to block the IR.
Yes the HVX200 has definitely a IR-blocking filter in front of the chips, but this filter is not very strong as I state in the thread about noise from this week (because IR light can cause visible noise in black parts).
So you can try to make IR pictures with your HVX and the quality / look will depend on your intentions and the filters you use. You should probably start with a very soft IR-filter that lets still enough visible light in to create a picture with IR & visible light.
I personally have never done this with a videocamera and don't know whether and how this will look like with the HVX.
quicklad
10-10-2007, 06:44 AM
Try taking one of your IR remotes (tv, cable , even the HVX200's own remote) and point the remote at the lens and start pressing buttons. Look on your lcd and to see if the ir transmitter on the remote is lighting up when you press the buttons.
If you can see it light up - then you are seeing IR - if not - then the IR filter in the camera is blocking out those wavelengths.
You don't have to do that test: you WILL see the IR-light but anyway the camera has a soft IR-blocking filter.