I remember trying Infrared Photography a few times in my film days and found it difficult and challenging.
It always seemed I was guessing the exposure time and the focus, trying to approximate the red line on the lens distance scale.
Winter Farm IR
Recently, I acquired a Pentax K-01 and had it converted to a full spectrum camera. Unlike film, digital sensors are sensitive to all light waves (UV, visible bands and IR) so most cameras use a hot-mirror to block the infrared bands and pass only visible light.
Winter Mules IR 1
Most conversions replace this hot-mirror and replace it with an IR based filter for a full time conversion, usually in the 720nm range. With the full spectrum conversion the mirror is removed and the IR filter is placed over the lens, much like the film days; however, unlike the film days I can see the image in live view just as if I was looking through a viewfinder.
Winter Mules IR 2
Apparently the new mirror-less systems make fantastic digital infrared cameras. They automatically set accurate exposure and the focus can be determined manually via live view or calibrated for auto focus. Another wonderful aspect of the K-01 is that it will take all my older Pentax K mount lenses.
Winter Tree IR
I now need to experiment with several to determine which will be good performers or or which will be susceptible to flares and hotspots. Infrared is often most noted for its use with contrast or faux colors with vegetation.
Faux Color IR Canal
Here are a few shots from the winter local scenery, a bit different but fun. I look forward to working with the camera as the spring green comes around.