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This is a fiber optic sync strobe only

The new YS-27DX strobe is designed for multipurpose underwater photography. This new strobe has beam angle of 105° x 84° and a guide number of up to
20 (ISO 100 / m) / 66 (ISO 100 /feet), providing spread and power for subjects that range from wide-angle to macro.

The light level control dial of the YS-27DX has nine different light level controls, which increments from a minimum power of GN 1.7 to a maximum power of GN 20 (1EV step). The light level control dial makes you to take ideal pictures, precisely adjustable to get just the right amount of light for the subject at hand.

The YS-27DX offers a pre-flash cancel mode (*1) that ensures the strobe won't fire prematurely when used with digital cameras that emit a small pre-flash burst before the main flash. This strobe is compatible with most digital cameras that have a pre-flash. An optional fiber optic cable accurately synchronizes the strobe with your digital camera's built-in flash.

The YS-27DX's power source is four AA batteries, which provide strength and endurance for a full day's shooting without changing batteries. The recycle time of YS-27DX with using 2700mAh nickel-metal-hydride batteries is only two seconds, providing speedy recovery for a rapid series of images. SEA&SEA adopts the dela-prism, which spreads soft and delicate lighting of subjects, for YS-27DX.

The YS-27DX is an ideal slave sub-strobe for a digital SLR camera housing. It detects light from the main strobe's Flash and immediately fires in sync with the main strobe.

• Key- A: Alkaline, O: Oxyride, Ni-MH
• Guide Number (ISO 100/land) : 20
• Beam Angle : 105° x 84°
• Batteries 4xAA : A: 6V / O: 6V / Ni-MH: 4.8V
• Number of Flashes*1 : A: 350 / O: 420 / Ni-MH: 490
• Recycle time (full)*2 : A: 2.5 / O: 2 / Ni-MH: 2
• Color temperature : 5500K
• Color temperature w/diffuser : 5200K
• Depth rating : 60m / 200ft
• Dimensions (WxHxD) : 87x122x135mm / 3.4x4.8x5.3inch
• Weight : 540g / 19oz
• Under water weight : -40g / -1.4oz
• Exposure control: Light-level control from GN 1.7 to GN 20 (in 9 increments) with a manual controller
• Pre-flash control:Equipped with pre-flash cancel mode (ignores one pre-flash)
• Slave function
• Sync cord: Fiber-optic cable for the YS-25 with a compact digital camera
• Over-pressure relief valve

*Number of flashes and recycle time depend on the battery brand, temperature and frequency of use.
*Number of flashes and recycle time of Ni-MH batteries were tested by 2700mAh batteries.
*YS-27DX is not compatible with digital cameras that emit two or more pre-flashes.