Efke KB/R 25 (former "KB/R14), and KB/R 50 (former KB/R50) are orthopanchromatic and made for use with lamps, but are excellent for landscape too. KB/R100 is panchromatic and has a spectral sensitivity as normal pan-films, and this is the emulsion Efke use on their sheet films, called PL100.(posted 8715 days ago)I love Efke films, especially the low speed films that are very sharp and fine grained.