Lens Characteristics and Specifi cations
247
30
20
2 m
Distortion (%)
Image height (mm)
10
0
1
0
1
Infinity
30
20
Distortion (%)
Image height (mm)
10
0
2
1
0
1
Figure 14-10
Distortion for HC 150. The distortion for the HC 150 is shown at infi nity at the
right and for a distance of about 7 feet at the left.
@ 1:2
Distortion (%)
1
0
0
10
20
30
1
2
@ infinity
Distortion (%)
1
0
0
10
20
30
1
Figure 14-11
Distortion of macro lens. Distortion of HC Macro 4/120 mm at infi nity (right) and
at a 1:2 magnifi cation distance.
The ability or inability to record straight lines properly over the entire image area is the
only distortion caused by the lens design. Do not blame the lens for any other distortions that
might appear in your images, especially with wide angle lenses.
Foreshortening
When a subject or part of a subject close to the camera, such as the nose in a portrait or an
arm stretched out toward the lens, appears excessively large in relation to the rest of the
subject or scene we have foreshortening, not distortion. Foreshortening is caused when the
lens is too close to the subject or part of the subject. To avoid foreshortening, photograph at a
longer focal length from further away. Excessively large noses can be avoided if the camera is
at least 3 feet (1 m) away from the person.
Slanted Lines
Slanted vertical lines are frequently referred to as distortion, but again are not created by
the lens but by a tilted camera. Since slanted lines can be straightened by computer manip-
ulations, the need for considering this point when taking the picture is reduced. Trying to
Содержание Digital Camera
Страница 1: ......
Страница 2: ...The Hasselblad Manual ...
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Страница 165: ...Heidi Niemala Editorial photograph made with a 50mm lens in the basement of a pre Civil War building ...
Страница 166: ...Heidi Niemala Photographed for clothing designer with a 150mm lens ...
Страница 167: ...Heidi Niemala Editorial portrait with a 150mm lens ...
Страница 168: ...Heidi Niemala Photographed with a 50mm lens during a sand storm at White Sands ...
Страница 198: ...Jonathan Exley An attention creating image of mult time Indianapolis 500 winner Helio Castroneves ...
Страница 200: ...Jonathan Exley Lifestyle Designer Kathy Ireland Courtesy of kathyireland com ...
Страница 243: ...Marco Grob Singer Alvin Chea from theTake 6 band photographed with an HC 2 8 80mm lens on an H camera ...
Страница 244: ...Marco Grob A make up test shot made with an HC Macro 4 120mm lens on an H camera ...
Страница 247: ...Marco Grob The Stairs photographed in CapeTown for Glamour magazine with an HC 3 5 50mm lens on an H camera ...
Страница 312: ...Raya High jewlery photograph produced with an HC 3 2 150mm lens on an H camera Raya Photographer ...
Страница 381: ...366 THE HASSELBLAD MANUAL Chart A2 Area coverage in inches with single extension tubes for the 6 4 5 film format ...
Страница 383: ...368 THE HASSELBLAD MANUAL Chart A4 Area coverage in inches with single extension tables for the 33 1 44 2 sensor ...
Страница 385: ...370 THE HASSELBLAD MANUAL Chart A6 Area coverage in inches with combinations of tubes for the 6 4 5 film format ...
Страница 387: ...372 THE HASSELBLAD MANUAL Chart A8 Area coverage in inches with combinations of tables for the 33 1 44 2 sensor ...
Страница 397: ...Chart D Close up charts for 80 to 250mm Hasselblad lenses an 503 and other V system SLR cameras based on the film format ...
Страница 398: ...Close Up Photography on Film or Digital 383 ...
Страница 400: ...Jonathan Singer ...
Страница 401: ...Jonathan Singer ...
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