Author Topic: "IR" Question....? (Read 1075 times)

Panther · « **on:** April 20, 2011, 06:15:00 PM »

Okay, if converting an IR body involves removing the AA filter - then what about Foveon based bodies since the Foveon sensor doesn't have an AA filter ?

lisandra · « **Reply #1 on:** April 20, 2011, 07:55:33 PM »

converting to IR removes the IR cut filter but leaves the AA filter. Thats how I understand it anyway

n2hhr · « **Reply #2 on:** April 21, 2011, 05:45:43 AM »

Most conversions remove the aa filter also. They are usually a solid sandwich with the hot mirror

adash · « **Reply #3 on:** April 21, 2011, 05:51:46 AM »

What do they put there instead of it? I tried to IR-convert a compact camera, but it didn't focus at infinity anymore. I guess the impact on the optical path by the IR-stop filter is not negligible.

Panther · « **Reply #4 on:** April 21, 2011, 08:53:20 AM »

Quote from: n2hhr on April 21, 2011, 05:45:43 AM

Most conversions remove the aa filter also. They are usually a solid sandwich with the hot mirror

So since the Foveon sensors don't have an AA filter, is this a "true" IR...? (I somehow don't think so now...)

n2hhr · « **Reply #5 on:** April 21, 2011, 08:56:27 AM »

Yes it is a true UV/IR if you remove the hot mirror. You then program the camera to specific IR bands with external filters or replace the hot mirror with a dedicated IR filter inside of the camera. I have seen a lot of great Foveon IR images!

Panther · « **Reply #6 on:** April 21, 2011, 02:37:30 PM »

Copy that - Thanks Mark!

"IR" Question....?