A new strobe designed and built to ful�ll every underwater photographer’s demands. The most versatile and highest performing strobe SEA&SEA has manufactured in its 40 year history.

Drawing inspiration from its highly regarded brethren such as the YS-50, YS-120, YS-250Pro and YS-110α.

The YS-D1 sets a new standard for underwater strobes. From subtle light output as low as

guide number 1 to a maximum power of guide number 32, control of underwater lighting has

become e�ortless with the YS-D1. The strobe is compatible with both state-of-the-art digital

SLR cameras and digital point-and-shoots.

■ Equipped with SEA&SEA’s new slave TTL system called “DS-TTL ll”.

■ Powered by only four AA batteries, the YS-D1 o�ers a maximum light output of guide number 32.

■ The YS-D1 is the world’s �rst slave TTL strobe equipped with an exposure compensation (EV) control function.

■ Ergonomically positioned three-color LED indication lamp.

The strobe is scheduled to be available on the market in January 2012.

Handout for the 2011 DEMA Show

YS-D1(Black)

connecter TTLIIfiber opticcable5pin Control Lamp

ManualLightTarget TTLDS-N OPT

:32Guide Number(land) 120°

×120°

Max Beam angle

New U/W Strobe for Digital Cameras

Specifications and product features may change without notice.

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■ Equipped with SEA&SEA’s new slave TTL system called “DS-TTL ll”.The YS-D1 provides reliable and stable automatic exposures for a variety of digital cameras with built-in flash and pre-flash. In addition, the YS-D1 is equipped with a slave TTL mode and a slave manual mode (11 steps). When a digital SLR camera is used in a housing, conventional manual strobe photography and conventional TTL photography (with a YS converter) is possible. In a clear water environment, two YS-D1 strobes in DS-TTL ll mode provide perfect lighting. When you would like to emphasize contrast, setting the main strobe in DS-TTL II mode and the secondary strobe in manual mode (11 steps) offers flexibility without limiting control. When underwater visibility is poor, two YS-D1’s set to manual mode may produce the best images. The YS-D1 is the most versatile underwater strobe available today. The DS-TTL exposure compensation function enables subtle lighting control by adjusting the Light Level dial in DS-TTL mode.

■ Powered by only four AA batteries, the YS-D1 o�ers a maximum light output of Guide Number 32.It’s even and flat beam is suitable and powerful enough for professional use. Compared with the YS-110α, the YS-D1 is 25% more powerful, 50g (1.8oz) lighter and 10% smaller. Not only is the YS-D1 suitable for wide-angle photography, it is also ideal for macro photography which requires deli-cate light level control. The strobe’s guide number can be reduced to 1. Highly versatile, the YS-D1 offers more automatic and manual control over lighting to get that perfect exposure. The YS-D1 is the most versatile underwater strobe available today. The DS-TTL exposure compensation function enables subtle lighting control by adjusting the Light Level dial in DS-TTL mode.

□Reflector

□Target light switch

□Target light

□Mode switch

□Battery cap

□Fiber-optic cable socket (slave sensor)

□Fiber-optic cable socket (for additional strobe)

□Light level 　control dial

□Ready lamp (red) / TTL confirmation lamp (green) / Slave TTL mode lamp (blue)

■ Details

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■ The YS-D1 is the world’s �rst slave TTL strobe equipped with an exposure compensation (EV) control function. A slave TTL strobe typically emits the correct amount of light based off the input of the camera’s built-in flash. However, many TTL systems are not reliable. The YS-D1’s DS-TTL exposure compensation function allows users to adjust the light level in TTL mode (-1.5EV, -1EV, -0.7EV, -0.3EV, +-0EV, +0.3EV, +0.7EV, +1EV, +1.5EV).

■ Ergonomically positioned three-color LED indication lamp.

■ Two accessory di�users.In macro photography when a wide beam is not necessary, no diffuser should be attached. When both strong light output and a relatively wide beam are necessary, the diffuser 100 should be attached. When a wide-angle lens is used, the diffuser 120 should be attached. Three beam angles can be selected in accordance with the photographer’s requirements.

■ Ergonomic design.The YS-D1 will auto-sense when a sync cord is connected, the slave ON/OFF switch will no longer be active. Simple controls and configuration enables easy operation. The light level control ratchets/clicks to aid in setting and operation.

■ Strobe mount can be selected. *OptionalWith the conventional YS adaptor, the strobe can be moved only upward and downward. However, with the optional ball joint, the strobe can be moved in a variety of angles.

(Ready lamp)A red LED will be shown when the strobe has been charged and is ready to fire.

Diffuser 100 Diffuser 120 (with Diffuser 100 attached)

(TTL confirmation lamp)A green LED will be shown for two seconds to confirm DS-TTL ll exposure.

(Slave TTL mode lamp)A blue LED will be shown when the strobe is set to Slave TTL mode and the strobe has been charged and is ready to fire.

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■ Speci�cations●[Guide Number (ISO 100/m) (land)] ： 32, 24 (with Diffuser 100 attached), 20 (with Diffuser 120

attached) ● [Beam Angle] ： 80°x80° (without diffuser), 100°x100°(diffuser 100), 120° x 120° (diffuser

120) ● [Batteries] ： 4xAlkaline A: 6V , Ni-MH: 4.8V ● [Number of Flashes*1] ： Alkaline: 130 , Ni-MH: 190

● [Recycle time (full)*2] ： A: 2.5 sec. , Ni-MH: 1.9 sec. ● [Color temperature] ： 5600K ● [Color

temperature w/diffuser] ：5250K ● [Depth rating] ： 100m / 330ft ● [Dimensions (WxHxD)] （Excluding

protruding part(s) and the arm holder.） ： 87x135x111mm / 3.5 x 5.4 x 4.4 inches ● [Weight] ： 650g /

22.8oz (w/o batteries) ● [Underwater weight] ：-10g / -0.4oz(w/ batteries) ● [Others] ： ○ Exposure

control: DS-TTL II, Slave TTL, Light level control dial (GN): 1 / 1.4 / 2 / 2.8 /4 / 5.6 /8 / 11 / 16 / 22 /

32 (11 steps) ○ Pre-flash control: Equipped with pre-flash cancel mode ○ DS-TTL II function

○ Slave function ○ Auto power OFF function ○ Sync cord: 5-pin Sync cord / N, Fiber-Optic Cable

(L-type) ○ Over-pressure relief valve ○ LED target light

■ System Samples

*1 Number of flashes and recycle time depends on the battery brand, temperature and frequency of use. *2 Number of flashes and recycle time of Ni-MH batteries were tested on 2400 mAh batteries.

* For compatible cameras, please refer to “Compatibility List” for the strobe and digital cameras on the SEA&SEA website..

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System sample with Olympus PT-048 （Tough μ TOUGH-8010）

System sample with Canon WP-DC34 （Powershot G11）

System sample with MDX-D7000（Nikon D7000）

System sample with Canon WP-DC42 （Powershot SX230HS）

System sample with RDX-600D （Canon EOS 600D / Rebel T3i）

SEA&SEA SUNPAK Co., Ltd.●Specifications, external design of products and product features in this catalog may change without notice to improve products. ●There may be slight differences between actual products and product images in this catalog. ●The LCD images pictured in this catalog are simulated. ●The contents in this catalog are current as of November 2011. ● Company names and products are all trademarks of their respective companies.