Originally posted by barondla
The Raw images are very flat. I tried for tonality and balance. Some IR shooters might think the processing looks too " normal B&W". Nothing I do looks like Kodak HIE film. So I'm still finding my way.
Thanks,
barondla
If you want more contrast picture in black/white, use 830 nm filter. But your exposures will go longer and you almost always will have pictures with foliage movement.
The best way is to shoot dedicated/converted IR camera. If you are in USA, Kolari Vision is the choice for conversion.
I converted 4 Pentax DSLRs to infrared at home. Not very difficult for me. I use 640 nm 2 mm thick filter on the sensor.
Main advantages for me are the possibility to use optical viewfinder, because Pentax is so good cameras that allow some submilimeter adjustment of sensor block inside the fixing cage and that is enough to get infinity even using 14 mm lens. Some fine focus adjustment is required for different lenses.
I use dfa 50 and 85 as well and they shine even at f1.4. Sharpness is incredible. It is even better compared to unconverted camera if it uses antialiasing filter (it is removed during conversion).
So using on-sensor IR filter allows to see what you shoot through the OVF.
640/665 nm filter allows more red light to reach the sensor and gives more possibilities to get false colors that can produce beautiful images. You always can add 720 nm or 830 nm filter on the lens and shoot using LiveView.
The flatness of RAW using 720 nm filter can be due to bad filter quality or shooting conditions. One my friend said to me that best contrast in image is achievable when the sun hits the object at 90 degree to you lens axis. And the sun is must for beautiful infrared image. Don't shoot in the overcast day, it is pointless. The image looks always flat and gray.