
Battery Life:
The rechargeable battery that comes with the Coolpix is very efficient
and lasts for more than enough time for a typical photo dive. However,
there are certain things that users can control to help with battery life.
The most important is to set the camera to turn the LCD off after a set
time, during periods of non-use. It can then automatically turned back
on if you depress the shutter release control half way. Please refer to the
Coolpix instruction manual for details on how to make this adjustment
setting.
Using Flash:
The Coolpix has a built-in flash, which will illuminate underwater subjects
that are close. For subjects that are farther away, an accessory slave strobe
is recommended. (See Below.) Due to the presence of suspended particles
in the water, the use of the supplied flash diffuser is recommended. This
is a static cling device that should be pressed against the inside of the
housing, and in front of the camera’s flash. It will widen and soften the
light, providing more coverage and less likelihood of “backscatter”, the
unattractive “snowstorm” affect of the flash reflecting off the suspended
particles.
Outdoor photographers do not have this same concern. There is no
backscatter to be concerned about, and due to the ability of the flash to
travel farther and more effectively in air as compared to in water, there
is normally not a need for an accessory flash to provide proper illumination
for most subjects.
Accessory Slave Strobes:
Using the Coolpix built-in flash as the master, you can trigger a second
slave strobe to provide more artificial light when needed. To do this, you
must use an accessory strobe that has a slave feature built in. The flash
from the Coolpix must be “bounced” toward the accessory strobe’s slave
sensor, or other fiber optic sensor. This will trigger the slave to fire. Be
sure to use a slave strobe that has the ability to ignore the built-in pre-
flash, and synchronizes with the shutter release.
Lens Accessories:
The CP-4 is designed to work with some of the wide-angle and macro
adapters that are currently on the market. For more information on these
items, see your local photo dealer.