Clear and IR Filters.

[Tandum]

I just got a set of True Tech 1.25" RGB filters in the mail today. Is there anyway to identify which is the clear filter and which is the IR filter without using a camera? None of them have anything written on them at all and these two look exactly the same :rolleyes:

[Gama]

The clear will be greener, and the IR block will be more redish when light reflects at 45 deg angle to it.
Another easy way is get a webcam and a remote control.
Shine the remote on the webcam, and you will see it flicker. Then place the IR block inline, if the flicker stops, its the IR block.

Theo

[Tandum]

Cheers Theo,
We used a mobile phone camera and an IR remote at Barambah, worked a treat.