Underwater Achromatic Close-up Lens
WFL13 USER MANUAL
Lens Construction 3 elements; 3 groups
Compatible Camera (Up to) Sensor Size: 18mm X 13.5mm
Diopter (Underwater Focal length)
Focusing Range
Max. Magnication
Glass / Coating
Lens Barrel
Mounting
Dimension
Weight
Depth Rate
+18 (55.2mm)
30mm - 53mm
3x
Optical Glass / Multi-Layer BBAR Coating
Aluminum with Type II Anodizing
M67 X P0.75
Ø 72 X 32mm
300g(Air) 125g(Underwater)
60m (197ft)
◆WEEFINE WFL13 is a premium underwater close-up lens. It comes with a +18 diopter (Air and Underwater) in optical power and
allow the close-up shooting in a very short object distance (30mm – 53mm).
◆WFL13 is designed by 3 high quality optical glasses with an achromatic doublet. This achromatic combination helps to reduce
the axle chromatic aberration.
◆All glass lenses have been coated with Broadband Anti-Reection (BBAR) Coating. Each lens surface is guaranteed to provide less
than 0.5% reectivity over the visible spectrum (420nm – 680nm).
◆All lens edges and spacer of WFL13 had been treated by matte nish. To avoid internal reection and ghost image.
◆The M67 X P0.75 thread mount allows the lens mounting directly on the camera waterproof housing with the same female thread
mount. User can also attach the lens with suitable step-up or step-down ring.
◆It is recommended to use natural light, external strobe or video light with the WFL13. The camera built-in ash may be blocked by
the lens and causes partial underexposed image.
Install the WFL13 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 it is tightened on the housing.
◆When using an external strobe, avoid the ash beam pointing directly to the lens. It helps to prevent the unwanted ghost image.
◆Do not impact the lens with large shock and vibrations or try to disassemble it, these will lead to damage or even ood the lens.
◆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 ooding.
◆Do not clean the lens with organic solvent or other chemicals. It may damage and degrade the coating on the lens.
◆Never look at the sun through the lens.
◆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.
◆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:
◆WFL13 is an underwater close-up lens for high power macro shooting. To get the maximum magnication, it is recommended to
set the camera lens to the telephoto end or choose a long focal length camera lens.
◆Vignetting would occur at wide end setting. Use the zoom function on the camera and zoom in until the dark corner disappear.
◆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.
