Band Pass filter

Hi,
I’ve finished my test of my new band pass filter. I’ve purchased it on Peau’s site, a 850nm band pass filter. Here are my impressions after 2 days of tests…

First of all, if you don’t use a proper filter, you won’t get a great experience. The band pass filter is the best solution I think.
My negative film filter was still good, and I didn’t noticed a huge change at the first glinch, but after several hours of tests, here are the improvments I noticed.
The camera now sees only IR 850nm so any other light source won’t affect the quality of the blobs. That’s why ambiant light is less a problem with this filter. Moreover, as there is only 850nm IR visible (which is the one of my illuminators), the camera has less trouble to adjust gain and exposure on the right values to see my fingers. Thanks to that, blob have a higher contrast…
So both this points are good enough to purchase such filter… but not as your main priority… As you may have noticed on my previous reports and my video, you can get a nice experience without it, but having one reduces the possibility of having further problems with anbiant light and low blob contrast…
Hope this help so of you…

Have fun !!!

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