Canon EOS 1 Instruction Manual - Page 73

Infrared Photography

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6. Infrared Photography Infrared film (film with extended sensitivity to infrared light) can be used to achieve interesting effects not possible with general-purpose film. When using black-and-white infrared film, the film's sensitivity to longer wavelengths requires a slight adjustment in focus using the red infrared index on the lens. Use a deep red filter to maximize the infrared effect. • When shooting with infrared film, use a lens equipped with a distance scale window. • For black-and-white and color infrared photography, read the instructions provid- ed with the film for proper use. 22 22 1 Focus the subject. 2 Set the lens' focus mode switch to MAMAMAFFF 50mm "M". 3 Read the focus distance from the distance scale window. • In this example, the distance from the camera to the subject is 3 m / 10 ft. 3 5 10 ft 8 1 11..55 33 m 22 22 3 55 1010 ft 8 1 11..55 33 m 2222 2222 4 Manually align the lens' infrared index with the 3 m / 10 ft index on the distance scale. • The lens' infrared index is set for a wavelength of 800 nanometers. However, the wavelength characteristics of general black-and-white infrared film varies depending on the type (750~830 nanometers). Therefore, to ensure proper focus when shooting with infrared film, we recommend to take extra shots with the lens adjusted slightly to the front and rear of the infrared index. • The characteristics of the lenses listed below are such that they do not require focus adjustment when using black-and- white infrared film. These lenses are there- fore not equipped with an infrared index. EF200mm f/1.8L USM EF300mm f/2.8L USM EF500mm f/4.5L USM EF600mm f/4L USM 73

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73
Infrared film (film with extended sensitivity to infrared light) can be used to
achieve interesting effects not possible with general-purpose film. When
using black-and-white infrared film, the film’s sensitivity to longer wave-
lengths requires a slight adjustment in focus using the red infrared index
on the lens. Use a deep red filter to maximize the infrared effect.
•
When shooting with infrared film, use a lens equipped with a distance scale window.
•
For black-and-white and color infrared photography, read the instructions provid-
ed with the film for proper use.
6. Infrared Photography
AF
M
22
22
50mm
AF
M
AF
M
AF
M
m
ft
3
5
10
81
1.5
3
22
22
5
10
1.5
3
22
22
5
10
1.5
3
22
22
m
ft
3
5
10
81
1.5
3
22
22
5
10
1.5
3
22
22
5
10
1.5
3
22
22
5
10
1.5
3
2
22
1
Focus the subject.
2
Set the lens’ focus mode switch to
“
M
”.
3
Read the focus distance from the
distance scale window.
•
In this example, the distance from the
camera to the subject is 3 m / 10 ft.
4
Manually align the lens’ infrared
index with the 3 m / 10 ft index on
the distance scale.
•
The lens’ infrared index is set for a
wavelength of 800 nanometers.
However, the wavelength characteristics
of general black-and-white infrared film
varies depending on the type (750~830
nanometers). Therefore, to ensure prop-
er focus when shooting with infrared
film, we recommend to take extra shots
with the lens adjusted slightly to the
front and rear of the infrared index.
•
The characteristics of the lenses listed
below are such that they do not require
focus adjustment when using black-and-
white infrared film. These lenses are there-
fore not equipped with an infrared index.
EF200mm f/1.8L USM
EF300mm f/2.8L USM
EF500mm f/4.5L USM
EF600mm f/4L USM