C300 MKII Operation
Page 37
Port Options
At this time of publication Gates SP80 Dome, FP80 Flat Port, and SP10 Dom Port are
options are available for C300 MKII. When choosing a Port consider the following
tradeoffs and limitations.
Dome Port
Optical material:
Optical-grade Acrylic or anti-reflective coated glass.
Purpose:
Wide to super wide imaging.
Advantages:
Retains FOV
. Corrects for field of view distortions inherent in Flat Ports.
Wide FOV capable.
Up to 180 degree fisheye are possible depending
on the camera lens capability.
Disadvantages:
Little or no zoom.
Domes inherently limit zoom through and varies with
camera lens employed.
Flat Port
Optical material:
Optical
grade acrylic or AR coated glass.
Purpose:
Medium to macro imaging.
Advantages:
Zoom through
. Flat Ports retains the zoom capability of a lens.
Macro.
Flat Ports are excellent for macro shots and the use of close up
diopters to capture small subjects.
Disadvantages:
No wide shots.
By their nature, Flat Ports do not allow wide shots.
Loss of FOV.
Like a SCUBA mask, Flat Ports decrease FOV by 25%.
NOTE
:
The optical interaction between any given lens and a Dome or Flat Port is
unpredictable. Distortions and aberrations can occur with either Port. As such,
Gates does not warrant optical performance or image quality.
Gates endeavors to collect data from the field and our own testing as a resource to
customers, but you should always characterize your lens of choice for use
underwater.
