Comments on: Canon PowerShot SD400 Infrared Cut-off Filter Removal

By: Will

Will — Wed, 03 Dec 2014 21:42:08 +0000

In reply to Matthew Petroff. Yes! That was the problem. Thanks. I saw on another website that they used 6 pieces of congo blue gel. That worked perfectly. Also, the camera I used is a Sony Cybershot dsc-w180. It was the easiest camera that I have played with. The lens and sensor unit is easily removed. To access the sensor all you need to do is remove a panel on the back of the unit. The IR cutoff filter isn't glued in and comes right out.

By: Graham Matthews

Graham Matthews — Thu, 20 Nov 2014 11:59:14 +0000

I have used NIR in microscopy – one method of blocking visible light is to use cheap crossed polarisers. The cheap ones when crossed block visible light effectively but pass NIR (you have to pay a lot to get effective NIR polarising filters, so most affordable polarisers only work in visible light).

By: Matthew Petroff

Matthew Petroff — Sat, 08 Nov 2014 19:17:52 +0000

In reply to Will. In that case, the sensor isn't damaged. The other possibility is that the type of film you used isn't transmissive in the near-infrared. You can try pointing the camera at an IR source, such as a flame or the sun, and see if you see anything. I would try a different kind of film.

By: Will

Will — Sat, 08 Nov 2014 15:46:40 +0000

In reply to Matthew Petroff. hmmm, it will still take pictures when I take the pieces out

By: Matthew Petroff

Matthew Petroff — Fri, 07 Nov 2014 20:20:44 +0000

In reply to Will. You might have damaged your image sensor in the process of modifying your camera. The modified camera, if undamaged, should have no problems taking images outside, during the day.