Performance Data Of Filters; Grey Filter N/Neutral Filter; Green Filter, Gr Panchromatic - Leica DMIL Instructions Manual

Performance data of filters

Filter

Grey filter N/Neutral filter

Green filter, GR panchromatic

DLF
BG38 (Blue filter)
ALF
BG20
VG9 (Green filter)
CB1.5, CB3
CR1.5
BG23
72
Application
Grey filters (neutral filters) are used to attenuate
the light without influencing the colour tempera-
ture. The engraved value, e. g. N16, indicates the
attenuation. N16 indicates a reduction to 1/16 =
100/16 = 6.25 % transmission.
Contrast enhancement for b/w images.
Conversion filter (daylight filter blue, similar to
CB12) for colour photography with daylight film,
integrated in filter magazine.
Suppression of red in fluorescence applications
(integrated in fluorescence illuminator).
Artificial light filter for colour photography with
artificial light film, to enhance colour contrast.
For red enhancement in Polaroid images.
Contrast enhancement for chromosome photo-
graphy.
Conversion filter blue: To increase the colour
temperature when using special lamps.
Conversion filter red: To reduce the colour
temperature, e. g. from 6000 K (colour tempera-
ture of a Xe lamp) to 5500 K (colour temperature
for daylight film).
Contrast enhancement of the complementary
colours blue and red on b/w film.