Sea & Sea YS-D3 Lightning Underwater Strobe



Sea & Sea YS-D3 Lightning Underwater Strobe

The Sea & Sea YS-D3 Lightning Underwater Strobe offers superior brightness and the performance you’d expect from a Guide Number 33 Underwater Strobe. The quality that made Sea & Sea the original innovator and pioneer of underwater strobe lights is back in a big way with this fantastic, lightweight, powerful underwater photography strobe light.

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Make your underwater photos look richer with more natural colour and enjoy a deeper depth rating as deep as 328′.

The Sea & Sea YS-D3 offers an upgraded circuitry from its predecessor model provides a maximum guide number of 33 and the ability to fire again in just 0.6 seconds at guide number 22; at guide number 16, there’s no interval at all. The flash has a wide beam angle of 105°, which gets even wider, 110°, with the included diffuser. A daylight-balanced color temperature of 5800K enables the strobe to restore colors that are absorbed underwater, thus allowing for more vibrant and accurate images. Aspherical troidal lenses on the flash tubes provide even light dispersion, with no hot spots.

Utilize TTL and manual flash exposure modes are available on the YS-D3. Audible and visible cues notify the user that the strobe is ready to fire. The two-level target light is bright enough to use as a dive light. The YS-D3 has 5-pin sync cord connector and a fiber-optic port for connection to an underwater camera housing. It is powered by four AA alkaline or NiMH batteries.

Newly designed circuitry and light-emitting unit produces powerful guide number of 33. In addition, a high precision aspherical optical troidal lens has been fitted over the two flash tubes to disperse an even light from the center to the edge. The strobe`s beam angle will increase to 110°by attaching the standard accessories Diffuser. When the optional Dome diffuser is attached, beam angle will increase to as wide as 150(TBD)

In order to avoid misunderstanding, the YS-D3 guide number (GN) and the beam angle are based on measurements taken on land (not underwater)
Some competitors will often state a GN measured on land and the beam angle in water, for example a GN 33 and beam angle of 110 degrees. However, this GN 33 value is based on a beam angle of 60~70 degrees. The beam angle may be expanded in water by a dome effect, however the GN in water is significantly lower than the value measured on land.

Note: A land-based strobe that uses the same four AA batteries as the YS-D3 may provide a notation that the GN is 60, but these measurements are taken under the condition that the focal length is equivalent to 200 mm (= beam angle 12 °). When the beam angle becomes narrower, the brightness of the illuminated area increases due to the light-collecting effect.

Flash Head
Angle of Coverage 105°
110° (with Wide-Angle Adapter)
Color Temperature 5800K
Guide Number 33′ / 10.06 m at ISO 100 (on Land)
Recycle Time 1.7 Seconds (NiMH)
3.5 Seconds (Alkaline)
Secondary Illumination Modeling Light
Exposure Control
Exposure Control Manual, TTL

The Sea & Sea YS-D3 Lightning Underwater Strobe utilizes a larger capacity condensers compared with those used on competing strobes. In addition, the D3 is also equipped with a newly designed charging circuit. As a result, the YS-D3 will fire at GN16 continuously without any interval time. Even when the strobe is fired at GN22, the strobe will fire again within a mere 0.8 seconds.

When the YS-D3 is fired at Guide Number over 22, a two-stage ready-to-fire signals will be issued. For instance, after the strobe fires at full power of GN33, the strobe will inform you both visually and audibly when the condenser is charged to fire at GN22. Then, when the condenser is charged enough to fire at GN33, another different signal will be issued. This design allows you to release more shutters in scenes where you want to shoot as many pictures as possible, maximizing shooting intervals between scenes.
Backlight panel that is effective when shooting in dark environments The indicator color on the back of the YS-D3 changes each time the position of the mode switch is changed. Blue (in DS-TTLII mode), light blue (in slave TTL mode), orange (in manual mode with pre-flash), and green (in manual mode without pre-flash) The positioning of the operation system is obvious during night diving.
* The colour in DS-TTLII mode has been changed from the YS-D2 to match the color with the optical converter.
Mounting Options
YS-D3 comes with a straight type ball base.
Optional YS base and new Diagonal ball base can be installed depending on the application.
YS base (common to YS-D1 / D2 / D3)
Traditional YS base. Easy vertical swing.
Diagonal ball base (only for YS-D3)
A ball base inclined at 35 ° compared to the straight type. This makes it easier to lower the strobe backwards, making it suitable for shooting when using a dome port. Also, when a Synchro Cord N is installed, interference between the cord and the ball clamp is minimized.

Fiber-Optic Cables

* Use of genuine SEA&SEA Fiber-Optic Cables is recommended. SEA&SEA strobes may not function properly if a third-party Fiber-Optic Cables are used (functions such as TTL auto exposure in particular).
*Do not use non-recommended batteries (such as lithium primary batteries). Use of non-recommended batteries may cause battery leakage and overheating and may cause the strobe to rupture, which could result in personal injury.

Buy Sea & Sea Underwater Strobes, Underwater Camera Housings, Sync Cords and Accessories Online in Canada from Dan’s Dive Shop, a Top Stocking Sea & Sea Dealer.

Ships within 1-2 weeks typically.

Additional information

Weight 2 kg
Dimensions 24 × 18 × 18 cm


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