It reflects the IR and UV and lets the visible light through. This is included in the Sigma SD14 camera. That way you can take IR photographs without doing any conversions, unlike any other cameras currently available.
Is that all you need to take an IR photograph? filters? do they just screw on to the end of the lens? and what are the square ones for? Sorry for all the questions but Ive never done IR and Ive been getting interested in trying it out.. any tips would be wonderful
Seriously though, I really do appreciate the questions! You have to start somewhere. Yes, all you need is an IR filter to shoot IR. Just place in front of the camera and viola. It does help to have a tripod and a camera that can do long exposures though. Even better if you can get a camera converted to shoot IR, this will make taking IR photographs faster and easier. The square filters are for my big camera [link] Hope that helps!
That is an awesome Camera!! reminds my of those old first generation cameras!
Thanks for answering my questions, although I have just a few more I have a Canon 350D (i think thats what it is been a while since I bought it lol ) I hear that the lens I have isn't the best for IR shooting.. its just the standard kit lens. what would you recommend? and is it hard to convert one?
Thank you so much again.. I think I'll give you a watch.. I can learn from you
www.MaxMax.com is who I would recommend to do IR conversions, although a bit spendy on certain camera models. You definitely want to do some research on lenses before you pick a good one for IR. Generally the ones with less internal glass elements perform better. I couldn't really point you in a good direction on lenses. I basically got frustrated with the low IR quality and built my own IR camera. Maybe that's a little excessive but it works really good.
Sure. It might be a little bit. Basically what you will see is that 760 and higher the image will be almost greyscale. You get okay color with the 720 but you get the best with the red 650 on a full spectrum converted camera. When you shoot with the 650 you don't really get any visible because of the sensors overwhelming response to IR but you get really good color contrast between the sky and foliage because of the reflectance spectra variance in the 650-720 range that you normally miss with a 720 or higher. [link]