Optional Accessories; External Flashes - Fantasea Line FRX100 IV Instruction Manual

e. In order to remove the flash diffuser from the housing, first turn the diffuser ring till the
diffuser is pointed horizontally. With the diffuser pointed horizontally, gently pull the ring
out of the lens port.
f. During the dive, in order to disable the flash diffuser, the diffuser ring can be turned until the
diffuser is pointed downwards or aside. This eliminates the need to completely remove the
flash diffuser in order to eliminate it.
4. It is best to set the camera flash mode to "Flash Always" as artificial light is required in most
compositions for the purpose of color and light reproduction. This will ensure the built-in camera
flash fires on every image taken regardless of ambient light available. Please refer to the Sony RX100
III or RX100 IV instruction manual for further instructions regarding such settings.
5. Turn the Flash Pop-Up dial counterclockwise in order to pop up the camera built-in flash.
6. Note that once the camera built-in flash has been popped up, it can be disabled again using the
Flash / Right control (page 10, no. 15) and selecting "flash disabled" on the flash mode menu.
Turning the Flash Pop-Up control clockwise will not have any effect on the built-in flash.
When shooting in M (Manual), A (Aperture priority) or S (Shutter Speed priority) shooting modes,
please take into consideration that once the flash has been popped up – it cannot be disabled.
Therefore, in such cases, it's recommended to switch to Auto shooting mode to eliminate the flash
after it has been popped up.

OPTIONAL ACCESSORIES

For the full selection of Fantasea accessories compatible with the FRX100 IV Housing, please refer to the
Fantasea website – www.fantasea.com

EXTERNAL FLASHES

Underwater flashes and strobes were designed to improve the color, lighting and quality of your
underwater images. Since light and color are absorbed by water, using an external flash is recommended in
all depths, during daylight and night dives. In addition to retrieving the color and light absorbed by water,
underwater flashes also allow for creative lighting, assist in reducing the amount of backscatter and prevent
the shadowing effect caused by the housing lens port when using the built-in camera flash, especially when
accessory lenses are mounted on the housing.
The FRX100 IV Housing can be used with underwater slave flashes. These external flashes feature a slave
sensor which triggers the external flash to fire in sync with the internal camera flash.
Most underwater slave strobes are capable of synchronizing with the internal camera flash without any
cables under certain diving conditions. They feature a slave sensor that triggers the strobe to fire in sync
FRX100 IV Housing Instruction Manual 20150809
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