Australis said:
I'm also interested to know how you did the infrared capture. Is it just a specialised filter that fits in front of the lens?
No. The sensor in a digital camera is sensitive to IR, but the manufacturers put a filter in front of it to block the IR because it would interfere with the colour balance and exposure.
For IR photography this filter is replaced with one that transmits IR. Several kinds are available, from those which only transmit IR to those which transmit everything, including UV.
When I upgraded to my present camera I decided to have the old camera converted to IR instead of getting rid of it, so I had it fitted with a filter which transmits visible red and some of the green, besides IR. This is called a Goldie filter, because if you swap the red and blue channels foliage comes out golden yellow, while the sky comes out blue, giving a relatively natural-looking result.
https://www.google.co.uk/searc...
I also have a screw-in filter which only transmits IR. This gives monochrome images with a more extreme effect, with white foliage and dark sky, but you cannot see through the viewfinder when it is fitted.
