Well, a few words about Infrared.
I will not get too technical cause its not my strong side, just a few words about it. Infrared photographs show a kind of thermo effect. Trees with white leaves and luminous white clouds against colored skies are the most common use for it. Many photographers on DA have tried it in the last few years and it seems to be more and more popular.
The Infrared opens a window on a parallel world intriguingly different to the one we usually see. The effect is surreal ans it shows a different kind of "documenting reality".
Here you can see the scene in normal view
And here is when using the IR filter -
We can't see Infrared light without the filter, we can only see it when It's isolated. Infrared photography is often confused with thermal imaging. It's not, It's just shows an effect similar to that. The difference is basically one of wavelength of electromagnetic radiation.
The filter shows the object be