Originally posted by Edward Kay all my monochrome infrared in the past has been taken, using my Mamiya 6x7 rangefinder camera...I am new at trying to get similar monochrome infrared on my new Pentax K-3.....do you have to use a R-72 filter on the front of the lens like I do on my film cameras...or can you get similar results, using camera only....do not really understand digital.....cheers Edward
I used to do infrared shots on my Pentax *ist and my Pentax K7 using R-72 filters. The difficulty came when composing the shot because absolutely nothing was visible in the viewfinder. I would either use a tripod and compose the shot without the filter, then screw it on and take the shot - OR just trust to luck and point the camera at the scene (ok with wide angle).
When I got the K7 the *ist was redundant so I sent it away to Advanced Camera Services in Norfolk to be modified for infrared exclusively. I'd read this artice
Convert your Digital SLR to Infrared which went into the subject in more detail. I recently purchased a Tamron lens AF18-200 for £132 to use with the *ist body. There are shots taken with this kit on the following pages
East Lothian page 13 and
East Lothian page 14 - the second page is exclusively infrared with 26 photos at different focal lengths.
With the modified camera I can compose the shot in normal colour in the viewfinder. I use Program mode on the dial but I sometimes underexpose by a full stop. The preview image on the camera's LCD screen is monochrome red but it can tell me if I need to reshoot at a different exposure. Because foliage appears white it's often necessary to underexpose to get detail. Shooting in RAW mode is a big help later. I remove the saturation and adjust white and mid levels to get good contrast.
Sample picture from Aberlady Bay Nature Reserve
and one showing the Bass Rock, the beach at low tide and North Berwick Law