Underwater Ultra-Wide Angle Conversation Lens
WFL09S
USER MANUAL
Lens Construction
7 elements; 6 groups (6G1P)
Magnification
0.32X
Compatible Camera (Up to)
Field of View Conversation
Dome Lens
Glass / Coating
Lens Barrel
Mounting
Dimension
Weight
Depth Rate
Sensor Size: 36mm X 24mm (Full Frame)
Camera Lens: 60mm(35mm Equivalent) - F/2.8
60mm(39.7°)
→
4.9mm(154.8°)
Optical Grade Polycarbonate Resin
Optical Glass / Multi-Layer BBAR Coating
Aluminum with Type II Anodizing
M67 X P0.75
Ø125 X 135mm
1145g(Air) 220g(Underwater)
60m (197ft)
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WEEFINE WFL09S is an underwater ultra-wide conversion lens. It converts a standard 60mm (35mm Equivalent) camera to a
maximum 154.8o field of view ultrawide angle camera system.
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WFL09S can work with the DSLR housing and the compact camera housing with a long lens port. It gives a better flexibility on
choosing the camera and the camera housing without compromising the fisheye field of view underwater.
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The lens is designed by 6 high quality optical glasses and one hard coated polycarbonate dome. The high refractive index
lenses and low dispersion lenses had been used to correct unwanted aberration.
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All glass lenses have been coated with Broadband Anti-Reflection (BBAR) Coating. Each lens surface is guaranteed to provide
less than 0.5% reflectivity over the visible spectrum (420nm – 680nm).
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Besides the ultra-wide angle shot, the WFL09S will extend the hyper-focal distance. User can capture a very close distance
object with a wide view background.
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WFL09S was built with a custom design Lens Hood. It minimizes the flare and give the best protection to the lens.
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The M67 X P0.75 thread mount allows the lens mounting directly on the camera waterproof housing with the M67 X P0.75
female thread mount.
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It is recommended to use natural light, external strobe or video light with the WFL09S. The camera built-in flash may be
blocked by the lens and causes partial underexposed image.
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Install the WFL09S as following steps:
1. Align the lens with the 67mm lens ring on the waterproof housing.
2. Turn the lens in clockwise direction until you feel the lens is locked secure on the lens ring.
3. Rotate the lens hood to the correct orientation.
4. Tighten the set screws on the Lens Hood
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When using an external strobe, avoid the flash beam pointing directly to the lens. It helps to prevent the unwanted ghost
image.
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Do not impact the lens with large shock and vibrations or try to disassemble it, these will lead to damage or even flood the
lens. During transportation, put on the rubber rear lens caps and put it in the carry pouch to have a better protection.
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Do not place the lens inside an extreme environment for example inside a high temperature car compartment, boiling water
or under direct sunlight. It may damage the sealing parts and eventually flooding.
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Do not clean the lens with organic solvent or other chemicals. It may damage the plastic dome and degrade the coating on
the lens.
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Never look at the sun though the lens.
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Attach the lens with appropriate force, improper installation may damage the thread on both the lens and the waterproof
housing. To prevent corrosion, it is recommended to apply small amount silicone grease on the thread area.
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Water is considered as an optical component in the design. To optimize the performance, water is needed to fill up the space
between the rear lens of WFL09S and the housing port lens (without trapping air bubble).
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Be careful while attaching the lens to the housing. Dust, dirt or any other particles caught inside the lens may lead to its
damage.
NOTES:
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This conversation lens is designed to use with a 60mm (35mm equivalent) camera lens. To maximize the field of view of the
lens, it is recommended to pre-set the camera lens to 60mm equivalent focal length.
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The thread mount on the lens is possible to remove and would not cause any damage to the lens. But only replace the thread
mount when the thread is worn or bruised.