 underwater Photo Course :: (8) underwater Photo Subjects :: Wide Angle Subjects :: Lens Angle Underwater
Lens Angle Underwater
|
U/W Photo Course
Learn u/w photography the easy way!
|
Here's a table showing typical angle of view for lenses on different camera systems...
| |
sensor |
35mm |
APS-H |
APS-C
|
| |
multiplier |
1.0 |
1.3x |
1.5x or 1.6x |
| |
Angle of view
(deg. diagonal) |
Focal length (mm) |
|
fisheye |
118° |
13 |
10 |
8 |
| |
111° |
15 |
12 |
10 |
| |
100° |
18 |
14 |
12 |
| |
92° |
21 |
16 |
14 |
|
wide-angle |
84° |
24 |
18 |
15 |
| |
75° |
28 |
22 |
18 |
|
Standard U/W |
63° |
35 |
27 |
23 |
|
Standard (Land) |
59° - 47° |
40 - 50 |
30 - 38 |
25 - 32 |
|
 The alternative to supplementary lenses,
if you own a Nikonos, is to purchase a wide-angle prime lensA lens attached directly to the camera body. This option gives
the benefit of extra optical quality, but with extra expense to match! Being
collimated (specifically designed) to work in water the Nikonos 15mm lens will
give you the sharpest pictures you can get. Note: the focal length of a Nikonos lens does not
correspond to SLR lenses, which is rather confusing! The 15mm Nikonos is
equivalent to a 20mm (35mm) and a 14mm (D-SLR).
Next >> Wide Angle Flash
|