Canon FA-490 Digital Camera User Manual


 
15
ACCESSORY SLAVE FLASH
If you use the camera built-in flash as the master, you can trigger a second slave flash to provide better
artificial light when needed. To do this, you must use an accessory flash that has a slave feature built in. The
flash from the camera must be aimed or bounced towards the accessory flash's slave sensor, or other fiber
optic sensor. This will trigger the slave to fire in sync with the master flash.
When using an accessory slave flash with fiber optic cable, it is recommended to black out the internal
camera flash. The internal flash is located near the camera lens and can contribute to backscatter by
illuminating floating particles close to the lens port or a shadowing effect caused by the lens port.
If the sensor of the fiber optic cable is attached to the outside of the housing directly above the internal
flash and taped over with black tapeit will block out the light from the internal flash but transmit the light
pulse to the external slave flash.
Fantasea Line offers the following underwater slave flashes compatible with this housing:
Remora Flash (#6117)- Features a guide number of 20 and therefore compatible for both macro
and wide angle photography. The Remora features a variable output control and a Y-S Mount
which enables mounting a focus light on top of the flash, thereby eliminating the need for an
additional arm.
Nano Flash (#6115)- Features a guide number of 12 and therefore useful mainly for macro and
general photography. The Nano Flash offers 3 output levels.
Complete Lighting Sets- Include one of the slave flashes mentioned above, a tray & arm system,
fiber optic cable, padded housing bag and a focus light.
Note
Be sure to use a slave flash that has the ability to ignore the built-in pre-flash in
digital cameras, and synchronizes with the shutter release.
LENS ACCESSORIES
The Fantasea FA-490/495 features a threaded 46mm lens port. This threaded port is designed to work with
some of the lens accessories that are currently on the market. Fantasea Line offers the following lens
accessories compatible with this housing:
BigEye Wide Angle Lens M46 (#5131): Perfect for shooting seascape, divers, ship wrecks and
schools of fish, without moving further away from the subject, thereby still taking full advantage of