YS base (common to YS-D1/D2/D3)

High Performance U/W-Strobe 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. Aspherical optical troidal lens Superior consecutive firing capability to capture those critical moments. The YS-D3 utilizes 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 Target light with increased power incorporating a uniquely designed aluminum heat diffuser, the target light is now powerful enough to be used as a dive light.?About 4 times brighter than YS-D2? Various accessories available for all underwater imaging experiences Dome diffuser (optional accessory) Increases beam angle to 150°×170° Essential accessory when fisheye lens is used, or soft light is required. + Guide number will drop to -1.5EV when it is fitted. Snoot (optional accessory) A strobe adaptor which narrows the beam angle to be directed at a target point. Diameter of the opening 25mm. Designed with internal prism which aligns target light`s light axis and strobe`s light axis to the center. Flash prism   (optional accessory) Optical guiding device to fire the strobe when a fiber-optic cable is not used. This device is for manual use only. The device is effective if multiple strobes are used in a fixed position.  However, the flash may not fire depending on the position of where multiple flashes are occurring in relation to that of the master flash.  Excellent visibility 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 color in DS-TTLII mode has been changed from the YS-D2 to match the color with the optical converter. In DS-TTLII mode In manual pre-flash mode   In manual non pre-flash mode Connection method with arm that can be selected according to preference 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.

A good underwater photo needs a good underwater flash! With the new version of the YS-D2 Sea&Sea has once again improved its lightest flash. The TTL function has been reworked once again. Now you can concentrate on what really matters: Your creativity!  The color temperature of at 5600 Kelvin (5250K with diffuser). With its recharge time after a flash to full load of 1.5 seconds, the YS-D2 J is particularly fast. Excellent visibility at night The illuminated control panel is ideal for night diving. The color of the illumination ächanges to indicate the mode: aqua blue (in DS-TTL mode), blue (in slave TTL mode), orange (in manual pre-flash mode) and green (in manual mode without pre-flash). You can üt check which mode the strobe is set to even under pitch black conditions. In slave TTL mode   In manual pre-flash mode   In manual mode without pre-flash Powerful flash with short recycling time The YS-D2 is powerful enough to illuminate a wide area, even in very bright conditions with lots of natural sunlight. For macro shooting where subtle exposure control is required, manual mode can be easily selected and the light level adjusted. Recycling time is only 1.5 seconds (when nickel hydride AA batteries are used.) DS-TTL ll automatic exposure control with improved accuracy and stability The DS-TTL ll automatic exposure control system developed by Seea&Sea has been further improved. Detailed tuning of light exit timing and the addition of the light emission detection function have significantly improved the accuracy of automatic TTL exposure. Previously, TTL photography with the lens aperture wide open was difficult (maximum aperture) and images were likely to be üoverexposed. It is now possible to use a low-power flash, so proper exposure can be easily achieved with the YS-D2 J.   In DS-TTL II mode The f-stop control can fine-tune the amount of light By controlling the actual flash light level, the flash achieves accurate exposure compensation with f-stop correction. Since the exposure compensation range has improved to +/- 2.0 f-stops, users can focus on capturing even more creative images. (-2.0EV, -1.5EV, -1EV, -0.7EV, -0.3EV, +0.3EV, +0.7EV, +1EV, +1.5EV, +2.0EV). Two diffusers and red filters included with the strobe as standard By attaching one of the included diffusers, the beam angle is increased to 100° or 120° (circular) with a soft and even light. The red pilot light filter helps to avoid disturbing or even scaring away creatures that would likely react to normal light. The red filter can be installed and removed in the diffuser passages. Diffuser100 für YS-D1/D2 diffuser (standard accessory) Diffuser120 für YS-D1/D2 diffuser (standard accessory)   Diffuser with attached red filter The pilot light can be adjusted in 2 levels The flash is equipped with a target light (about 100/300 lumens). When in use (pilot switch in the ON position), the light is automatically turned off when the flash is turned off and turns back on automatically after 0.5 seconds. Ergonomically improved controls The handling is significantly improved. Larger knobs and a new magnetic rotary switch prevent accidental resetting of the controls during operation. With the new controls, quick operation is possible when sudden photo opportunities arise. Custom mode is a new innovation that allows the YS-D2 to be compatible with cameras that have non-standard pre-flash settings. Some manufacturers use their own pre-flash timings for their cameras. The new custom function allows the YS-D2 to be compatible with cameras with non-standard pre-flash settings in DS-TTLII and manual modes Attaching the YS-D2 The flash can be attached to an arm using the YS mount or the ball mount (ball mount is included). Choosing the right cable Choose either a fiber optic cable (optional) or a sync cable (optional) to connect the flash, depending on your camera and housing. A fiber optic cable is required to use the DS-TTL ll function.

NEW, YS-D3 MKII MODEL Sea&Sea has now updated its flagship YS-D3 strobe to the YS-D3MKII. The new updates enhance TTL shooting and third-party optical converter compatibility while still retaining all the great features, such as a 33 Guide Number, wide Beam Angle and broad flash distribution of the original D3 The new MKII model will be a “running change” update, that is, the product number (#03123), will remain the same. Features of the YS-D3MKII model Newly developed software enables compatibility with existing and previous Sea&Sea optical converters. TTL shooting with the YS-D3MKII can now be enjoyed using the YS-D2 position on the S&S optical converter. A newly designed circuit improves the accuracy of TTL light intensity with compact cameras and also provides greater compatibility with third-party Optical TTL converters. The design of the light intensity adjustment dial and mode switch has been revised for better useability in all diving environments.  The difference can be easily recognized from the outside by the MKII label on the side of the unit and the new control knobs on the rear. High Performance U/W-Strobe 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. Aspherical optical troidal lens Superior consecutive firing capability to capture those critical moments. The YS-D3 utilizes 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 Target light with increased power incorporating a uniquely designed aluminum heat diffuser, the target light is now powerful enough to be used as a dive light.?About 4 times brighter than YS-D2? Various accessories available for all underwater imaging experiences Dome diffuser (optional accessory) Increases beam angle to 150°×170° Essential accessory when fisheye lens is used, or soft light is required. + Guide number will drop to -1.5EV when it is fitted. Snoot (optional accessory) A strobe adaptor which narrows the beam angle to be directed at a target point. Diameter of the opening 25mm. Designed with internal prism which aligns target light`s light axis and strobe`s light axis to the center. Flash prism (optional accessory) Optical guiding device to fire the strobe when a fiber-optic cable is not used. This device is for manual use only. The device is effective if multiple strobes are used in a fixed position.  However, the flash may not fire depending on the position of where multiple flashes are occurring in relation to that of the master flash.  Excellent visibility 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 color in DS-TTLII mode has been changed from the YS-D2 to match the color with the optical converter. In DS-TTLII mode In manual pre-flash mode   In manual non pre-flash mode Connection method with arm that can be selected according to preference 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.

High-spec underwater strobe with large light output The YS-D3 DUO by Sea&Sea is a high-specification underwater strobe with three shooting modes: DS-TTL, RC mode, and manual. The YS-D3 DUO delivers even and uniform light distribution with a large light output of GN33. Custom settings allow the strobe to be used with high precision with a variety of cameras and shooting styles. Shooting Mode The mode switch can be used to switch between "DS-TTL", "RC mode", and "Manual". It is conveniently identifiable by color. Blue: DS-TTL Red: RC mode Orange: Manual 1 Highly accurate DS-TTL dimming DS-TTL dimming accuracy has been greatly improved by adopting a newly designed light receiving sensor. By applying detailed custom settings, it can be used with high accuracy with a wide variety of cameras of multiple brands. *When shooting TTL with a camera of a brand other than OM SYSTEM (OLYMPUS), select DS-TTL as the shooting mode. *Pre-custom settings must be made for each camera in advance when shooting with DS-TTL. In DS-TTL mode. Exposure compensation can be made with the light level control dial on the right. +2.0 to -2.0 Highly accurate DS-TTL dimming The "RC System" is a flash system for OM SYSTEM digital cameras, and the YS-D3 DUO was developed in collaboration with OM Digital Solutions to incorporate the RC mode. RC mode is a light control mode in which the camera automatically controls the flash output based on the brightness through the lens. The YS-D3 DUO is equipped with a more precise "RC mode" that was developed based on system information officially provided by OM Digital Solutions. The YS-D3 DUO is equipped with a more precise "RC mode" developed based on the system information officially provided by OM Digital Solutions. *Since the strobe is system-linked to the camera, flash output compensation can be adjusted not only on the strobe side but also on the camera side while shooting in RC mode. *Setting the camera to RC mode can prolong (save) the camera's battery life. In RC mode. The light level control dial on the right can be used for exposure compensation. Manual mode has 11 steps In manual mode, light intensity can be adjusted in 11 steps. The settings are (GN: 1 / 1.4 / 2 / 2.8 / 4 / 5.6 / 8 / 11 / 16 / 22 / 33). The value can be easily seen on the scale on the light intensity adjustment dial. Compatible with digital cameras that do not have a pre-flash function. *Only manual flash is available, but if your camera housing is equipped with a strobe connector/converter connector, you can also use a sync cord to connect the strobe. In manual mode. Select the guide number with the light level control dial. YS-D3 DOU can also be connected with a sync cord Customize The YS-D3 DUO can be set up with high precision to accommodate a variety of shooting styles with different cameras by making custom settings. Refer to the table for settings according to the shooting mode used and the method of synchronizing the camera and strobe. Shooting in DS-TTL mode and manual mode ・ Click here to shoot with DS-TTLusing an optical/TTL converter. *Custom settings are not required when using manual trigger. Use the default settings. ・When shooting in DS-TTL/Manual using the built-in flash. Nikon  Canon  Sony Others *See page E-28 of the instruction manual for procedures to change custom settings. Shooting in RC mode When shooting in RC mode with an OM SYSTEMS (OLYMPUS) camera, no custom settings are required. Select "RC mode shooting" in the flash mode setting on the camera side; YS-D3 DUO should be set to "RC" for shooting mode. *For details on "RC mode shooting," please refer to the user's manual of the camera to be used. Light source This is a high-performance strobe that pursues quality of light, and its high luminous flux and wide beam angle are effective for wide-angle photography with fish-eye lenses and other wide-angle lenses. The strobe also features our proprietary light distribution technology. High light intensity GN33 The light output has a guide number (GN) of 33, one of the highest among general-purpose underwater strobes. The use of two discharge tubes increases power and achieves GN 33 at full flashing. Two discharge tubes Uniform and even light distribution The originally developed "aspherical toroidal lens" is placed in front of the light-emitting tube, and the two discharge tubes and the "aspherical toroidal lens" provide uniform and even light distribution to the periphery, making it an ideal light source for external Illumination. Aspherical optical troidal lens Adjust beam angle with diffuser The beam angle is 80°×105° without the diffuser and 100°×110° with the included diffuser for soft lighting. When the optional dome diffuser is attached, the beam angle increases to 150°×170°. The dome diffuser is effective when using a fisheye lens or when lighting with soft light (guide number is reduced by approximately -1.5 EV). Without diffuser With attached diffuser (optional) Dome diffuser installed Operability Sea&Seas particular emphasis on ease of use, especially underwater handling. The more you use it, the more you will appreciate its easy-to-turn dial, easy-to-see panel display, and good underwater balance. Large dial Underwater operation is performed with the mode switch and light intensity control dial. The large dials are non-slip and the height difference allows smooth operation even when wearing thick gloves. It is designed to stop in steps with a click-click to minimize malfunctions. Large dial Easy-to-read backlit panel The indicator color changes each time the mode switch is repositioned. Blue (in DS-TTLII mode), red (in RC mode), yellow (in manual mode with pre-flash), and green (in manual mode without pre-flash) are the different colors for identification, so positioning of the controls is easy to see even when night diving. In DS-TTLII mode In RC mode In manual non pre-flash mode Underwater Balance YS-D3 DUO by Sea&Sea has almost zero buoyancy with the ball mount and clamp in place. Heavy underwater weight requires unexpected force to operate the clamp, but the YS-D3 DUO is unaffected by buoyancy, so operation is smooth. Even if you change the strobe position, the underwater balance of the entire housing set does not change significantly and you can feel how easy it is to handle. Two patterns of target lights The LED target light function is useful for focusing and checking the beam angle of the strobe. Choose either 300 lumens or 150 lumens depending on the situation. 300 lumen 150 lumen One-touch battery replacement The power source is AA batteries, which are widely distributed in general. Four of the same type (1.5V alkaline AA batteries and 1.2V nickel-hydrogen AA batteries). The battery box is opened and closed by a bayonet type that does not put a burden on the O-ring. It is a one-touch operation and does not require force like the screw-in type. Hook for Fiber Optics A hook for fiber-optic cable on the strobe body smartly guides the fiber-optic cable. How to connect with the arm of your choice A straight type ball base is included, but the YS base or Strobe Ball Base 35 can be attached as an option depending on the application. (optional) YS base (optional) Diagonal ball base Accessories A wide variety of accessories expand the shooting range. Snoot An adapter that turns a strobe light into a spot light. An internal prism allows the optical axis of the target light to be perfectly aligned with the optical axis of the strobe light. The beam aperture is 25mm and the use of a snoot cuts off light around the subject to make only the subject stand out. Dome diffuser Diffuser that widens the beam angle to 150° x 170°. Light intensity is reduced by approximately -1.5 EV (GN28). Flash prism Light guiding prism that can emit YS-D3 DUO light without using a fiber-optic cable; supports RC mode and manual Emission.