Ikelite 6280.30 Supplemental Instructions page 4

External Accessory Lenses
W-20 and W-30 Wide-Angle Conversion Lenses
The front of the lens port accepts the Ikelite 6420 W-20, 6430 W-30, and
other 67mm threaded wide angle or macro lenses without the need for
an adapter. An external wide angle conversion lens increases angle of
coverage so you can get closer to the subject while still fitting everything
in the frame.
Slight to moderate vignetting will occur at widest angle camera lens
setting with these lenses. Zoom in to eliminate, or crop the image in
post processing. NOTE: The L27 will not vignette at camera's widest
angle setting underwater when using the W-30 lens.
Bayonet mount lenses cannot be used with this housing.
Please visit www.ikelite.com for additional information.
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Ikelite 6430 W-30 Conversion Lens