Phase One 645 AF - Manual (Page 52)


4.9 Infrared photography
Infrared Photography is complicated when using digital backs, as the
digital back is adjusted to match the viewable light perfectly. To make
good infrared photography, you need the back adjusted for this or a back
dedicated to infrared photography.
DO NOT TRY THIS AT HOME
– all corrections in this area must be done by Phase One to ensure the
precision. If you remove the protectionglass or make other physical
adjustments on the back the warranty will immediately be annulled.
If you consider Infrared Photography, please contact your local
Phase One dealer for technical advice and pricing on this.
When taking photos using infrared film, the position at which the subject
is in focus is slightly different than that of regular films. This is because
the infrared rays have a longer wavelength and the image converges
behind the film plane of regular film. Use the procedure described
below when taking photos using infrared film.
1. Set the focus as usual. Read the point on the distance scale matching
the center index of the depth scale.
2. Set the focus mode selector lever to “M” (manual focus mode). Turn
the focusing ring clockwise and align the read point to the infrared
index.
NOTICE:
Use a red filter when taking photos
using infrared film.
Be sure to read the infrared film’s
usage instructions.
You cannot take photos in AE modes
when using an infrared film.