Nikon SB-140 instruction manual Tips on UV and Infrared Photography, See charts on page 36 to

Page 31

TIPS ON UV AND INFRARED PHOTOGRAPHY

Films

For UV photography

The wavelength range of UV photography with the S8-140 is from 300 to 400nm. Usable films are :

•General panchromatic and regular photosensitive materials

•Color film*

•Special film for UV photography, such as Kodak Spectroscopic Type 103-0, Type 103-F, etc.

•Image will appear in a blue monochrome color.

Note that infrared films cannot be used for UV photog- raphy with the S8-140.

Guide Number

The flash unit'sguide number relates the output of a light to the sensitivity of a film, and is generally used only for visible-light photography. It cannot be adopted for UV and infrared photography, because the amount of light re- flected from subjects differs from that in visible-light photography and because film sensitivity cannot be deter- mined for UV and infrared photography.

For the S8-140, Nikon has determined the guide number (shown on page 27) for UV photography or infrared photography as follows.

For infrared photography

Usable films are:

•Kodak High-Speed Infrared Film 2481

•Sakura Infrared 750

•Kodak Echtachrome Infrared Film 2236

Film care

•UV and infrared photographic films are easily impaired by high temperatures-store below 1Q°C (50°F).

•Load UV and infrared films into the camera in a dark room .

•Take care not to expose them to infrared rays.

Guide number for UV photography

Correct exposure, obtained with Kodak Spectroscopic Type 103-0* film by using a Kodak 0-19 developer at 20°C (68°F) for six minutes, is used to determine the guide number for UV photography.

•With other films, the guide number may differ from that shown on page 27.

Guide number for infrared photography

Correct exposure, obtained with Kodak High-Speed Infrared Film 2481* by using a Kodak 0-76 developer at 20°C (68°F) for 10 minutes, is used to determine the guide number for infrared photography.

•With other films, the guide number may differ from that shown on page 2 7.

Spectrum Energy Distribution

See charts on page 36 to 37.

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