Newly designed strobe YS-D3 produces a 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)
[Guide Number (ISO 100/m) (land)] : 33, 28 (with Diffuser attached)
[Beam Angle] : 80°x105° (without Diffuser), 100°x110°(with Diffuser)
[Batteries] : 4xAA A: 6V Ni-MH: 4.8V
[Number of Flashes *1] : A: 140 Ni-MH: 220
[Recycle time (full) *2] : A: 3.5 sec. Ni-MH: 1.7 sec.
[Color temperature] : 5800K
[Color temperature w/diffuser] : 5500K
[Depth rating] : 100m / 330ft
[Dimensions (WxHxD)] : 92x111x147mm / 3.6 x 4.4 x 5.8 inches (excluding ball base)
[Weight] : 610g / 21.5oz (w/o batteries) (excluding ball base)
[Underwater weight] : Approx.-20g / -0.7oz (incl. batteries ball base)
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 / 33 (11 steps)
DS-TTL II function
Auto power OFF function 30min
Sync cord: 5-pin Sync cord/N, Fiber-Optic Cable
Over-pressure relief valve
LED target light (output is adjustable in 2 steps)
Audible charge signal
*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 2500 mAh batteries.