INON UWL-100 Wide-Angle Lens
 
Fits Ikelite #6441.42 B/G 3.6" (nominal) push-fit UWCC filters.
Construction: 5 elements,
4 groups, optical glass.
Dimensions: 100mm dia., 58.5mm
long.
Weight: 625g in air, 370g
UW.
Supplied accessory: front
and back push-on lens caps. |
 |
Early issue (Type 1) requires replacement filter ring for camera
housing when used with Olympus PT-005, PT-005s, PT-007or PT-010. |
|
Test Pictures: f/8
(35mm equiv. f=35mm - Taken using Olympus C-5050)
Test Pictures: f/3.1
(35mm equiv. f=35mm - Taken using Olympus Mju 410)
Materials: Optical glass
dome with internal multiple anti-reflection coating. Anodised
Al body.
Dimensions /mm: major diameter: 129.6. length:
48.9 dome unit only, 85.5 with UWL-100.
Weight: 498g dome unit only
(air). 587g with UWL-100 underwater.
Kit comprises:
Dome lens assembly, Packing ring, 6 x M4 socket-head screw, Allen
key (hex wrench) 3mm AF, back plate, O-ring 79 x 4, O-ring 99
x 4. |
 |
Test Pictures: f/8
(35mm equiv. f=35mm - Taken using Olympus C-5050)
INON UWL-100 Coverage Chart
 Camera zoom setting
= maximum wide.
Angle of coverage
refers to format diagonal with main camera lens focused at infinity.
Coverage underwater
with dome lens is less than coverage in air because water filling
the space between the housing port and the UWL-100 rear element
increses the effective focal length of the camera lens. |
Generic Data*
|
Camera lens |
Coverage with UWL-100 |
|
35mm equiv. focal length (f35) |
Coverage |
UW (L') |
Air |
UW with
dome lens |
|
31.5mm |
68.9° |
100.5° |
158.4° |
131.6° |
|
37.0mm |
60.6° |
91.4° |
144.9° |
127.9° |
|
37.8mm |
59.5° |
90.1° |
141.1° |
125.0° |
|
38.4mm |
58.8° |
89.3° |
139.1° |
123.4° |
|
42.9mm |
53.5° |
82.9° |
123.7° |
111.3° |
* based on m=0.57077 when UWL-100
rear element is immersed in water.
Coverage UW (without dome lens):
L' = 2 Arctan[ 43.266615 / (2 m f35) ]
where f35 = 35mm equiv. focal length in
mm, and m (magnification) = 0.57077. |
Olympus Camera
|
Camera |
Housing |
Installation |
Type |
Coverage UW |
Coverage air |
Coverage UW with dome lens. |
|
C-40z |
PT-012 |
M67 adap. |
1, 2 |
89.3° |
139.1° |
123.4° |
|
C-2020z |
PT-005,07,10 |
Direct* |
1 |
90.6° |
142.8° |
126.2° |
|
C-2040z |
PT-007,10 |
Direct* |
1, 2 |
82.9° |
123.7° |
111.3° |
|
C-3000z |
PT-005,07,10 |
Direct* |
1 |
100.5° |
158.3° |
131.6° |
|
C-3030z |
PT-005,07,10 |
Direct* |
1 |
100.5° |
158.3° |
131.6° |
|
C-3040z |
PT-007,10 |
Direct* |
1, 2 |
91.4° |
144.9° |
127.9° |
|
C-4040z |
PT-010 |
Direct* |
1, 2 |
91.4° |
144.9° |
127.9° |
|
C-4100z |
PT-010 |
Direct* |
1 |
100.5° |
158.4° |
131.6° |
|
C-5050z |
PT-015 |
Direct |
2 |
91.4° |
144.9° |
127.9° |
|
* Exchange the lens mount ring on
the housing for the INON version. |
Canon Camera
|
Camera |
Housing |
Installation |
Type |
Coverage UW |
Coverage air |
Coverage UW with dome lens. |
A10
A20
A30
A40 |
DC-200/s |
M67 adap. |
1, 2 |
90.1° |
141.1° |
125.0° |
|
Ixus 300 |
DC-100 |
M67 adap. |
1, 2 |
90.1° |
141.1° |
125.0° |
|
Ixus 330 |
DC-500 |
M67 adap. |
1, 2 |
90.1° |
141.1° |
125.0° |
S30
S40 |
DC-300 |
M67 adap. |
1, 2 |
91.4° |
144.9° |
127.9° |
|
Source:
Optical data provided by INON, with supplementary calculations by Dr D.W.Knight,
of Cameras Underwater. E&OE. |
|
Fits M67 filter
thread.
Depth rating 60m
(lens has sealed internal air-spaces).
Achromatic afocal
wide-angle converter with anti-reflection coatings front and
back.
Magnification:
x 0.57077
Vignetting may
occur when camera 35mm equivalent focal length is less than 31.5mm.
Zoom in to cure this problem.
Increases max.
coverage to 131° underwater (when camera lens 35mm equiv:
focal length is 31.5mm). Actual coverage depends on camera and
housing - see coverage chart below. 
