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5. Prior to installing the lens on the housing, it is recommended to apply a small amount of
silicone grease on the threaded area of the lens (and adaptor, if used) in order to
prevent corrosion. Make sure that no grease is applied over the lens glass.
6. If using an adaptor, install it on the lens by screwing it all the way in.
7. During the dive, install the lens by screwing it on to your housing lens port. Avoid
tightening the lens too hard onto the housing port, filter or adaptor, as this might
result in difficulty with removal.
8. Note that the 52mm threaded adaptor mount screwed into the lens can be replaced
with a Bayonet mount (separately purchased) for quick and easy installation and
removal of the lens when used with a compatible Bayonet system (QRS). To replace the
adaptor mount screwed into the lens, use the Allen key included to remove the screws
securing the adaptor, replace the adaptors on the lens and use the same Allen key and
screws to secure the new adaptor to the lens.
9. Once the lens is installed on the housing lens port, test the mount to make sure it's
stable and that the lens sits within a fixed and secure position.
10. Align the wings by carefully swiveling them so that the longer wings are positioned
vertically - on the bottom and top. This will prevent the wings from being visible in
images captured.
11. Note that water must enter the gap between the lens port and UWL-400Q Lens glass
when using the lens underwater. Therefore, when diving with the lens, it is best to
install it underwater. Before capturing images, make sure that the gap between the wide
angle lens and the housing lens port fills with water and that there are no air bubbles
trapped there.
12. The UWL-400Q Lens can be removed and installed repeatedly throughout the course of
the dive.
13. When removing the UWL-400Q Lens from the housing, it can be conveniently stored by
attaching it to an EyeGrabber Lens Holder, which mounts on any standard Flex or B&J
Arm. For a selection of EyeGrabber Lens Holders available, please visit our website -
www.fantasea.com
14. During the beginning of your dive, the lens might become foggy as a result of an increase
in the air temperature inside the lens, following submersion in cooler water. Storing the
lens in a cool dry place when not being used, such as a padded housing bag with a few
silica gel packs inside, and submerging it in cool water for 10 minutes prior to the dive,
will assist in preventing such condensation. However, even if the lens starts fogging up
at the beginning of the dive due to temperature differences, note that continuing to dive
with it for about 10 minutes should eventually dissolve the fog.
15. It is recommended to use an external strobe when the UWL-400Q Lens is mounted on
the housing. The UWL-400Q Lens blocks the camera internal flash, resulting in
underexposed or shaded images.
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UWL-400Q Wide Angle Lens Instruction Manual 20180714
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