All specifications above are based on SEA&SEA's testing standards. Refer to the "Compatibility List" on SEA&SEA's website for compatibility between the strobe and specific cameras.
Item | YS-03 | YS-01 | YS-D2 | YS-250PRO |
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Guide Number (ISO 100/m) (land) | 20 | 20 | 32, 24 (with Diffuser 100 attached), 20 (with Diffuser 120 attached) |
32 |
Beam Angle | 100°x100° (with Diffuser 110°x110°) |
100°x100° (with Diffuser 110°x110°) |
80°x80°(without Diffuser), 100°x100°(Diffuser 100), 120° x 120°(Diffuser 120) |
105°×105° (with Diffuser 115°x 115°) |
Batteries | Only use x4 AA batteries of the same type and make (1.5V Alkaline or 1.2V Nickel-Metal Hydride). | Only use x4 AA batteries of the same type and make (1.5V Alkaline or 1.2V Nickel-Metal Hydride). | Only use x4 AA batteries of the same type and make (1.5V Alkaline or 1.2V Nickel-Metal Hydride). | Battery for YS-250PRO |
Number of Flashes*1 | AA Alkaline batteries: 230 / Nickel-Metal Hydride batteries: 330 | AA Alkaline batteries: 230 / Nickel-Metal Hydride batteries: 330 | AA Alkaline batteries: 150 / Nickel-Metal Hydride batteries: 200 | 200 |
Recycle time (full)*2 | AA Alkaline batteries: 3.1 sec / Nickel-Metal Hydride batteries: 2.5 sec | AA Alkaline batteries: 2.5 sec / Nickel-Metal Hydride batteries: 1.9 sec | AA Alkaline batteries: 3.0sec / Nickel-Metal Hydride batteries: 1.5 sec | 1.8 sec. |
Color temperature | 5600K | 5600K | 5600K | 5600K |
Color temperature w/diffuser | 5250K | 5250K | 5250K | 5200K |
Depth rating | 75m / 250ft | 75m / 250ft | 100m / 330ft | 60m / 200ft |
Dimensions (WxHxD) | 68x108x129mm / 2.7x4.3x5.2inches | 68x108x129mm / 2.7x4.3x5.2inches | 89x133x116mm / 3.5 x 5.2 x 4.6 inches (incl. YS base but excluding protruding parts) | 107x130x223mm / 4.3x5.2x9inches |
Weight | 430g / 15.0oz (w/o batteries) * Fixing bolt fitted |
450g / 15.8oz (w/o batteries) * Attached a fixing bolt to the Strobe. | 623g / 22.0oz (w/o batteries) (inc. YS-mount and fixing bolt. Without batteries) | 1,383g / 48.4oz (w/o batteries) * Attached a fixing bolt to the Strobe. |
Underwater weight*3 | Approx. +10g / 0.4oz(w/ batteries) | Approx. +10g / 0.4oz(w/ batteries) | Approx.+40g / 1.4oz (incl. batteries) | Approx. +80g / 2.8oz(w/ batteries) |
Others | □Exposure control: Slave TTL □Slave function □Auto power OFF function □Sync cord : Fiber-optic cable □Over-pressure relief valve |
□Exposure control: DS-TTL, Light level control dial(GN): 1/1.4/2/2.8/4/5.6/8/ 11/16/20 (10 steps) □Pre-flash control: Equipped with pre-flash cancel mode □DS-TTL function □Slave function □Auto power OFF function □Sync cord: Fiber-optic cable □Over-pressure relief valve □LED target light |
□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 □Over-pressure relief valve □LED target light (output is adjustable in 2 steps) □Audible charge signal |
□Exposure control: TTL,Light level control dial (GN): 0.7/1/1.4/2/2.8/4/5.6/8/11/ 16/22/32 (12 steps) □Pre-flash control: Equipped with pre-flash cancel mode □Slave function □Sync cord : Sync cord/N, Fiber-optic cable □Over-pressure relief valve □LED target light □Test flash function □TTL / READY confirmation audible 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 2400 mAh batteries.
*3 As a standard, underwater weight measurements are taken in fresh water. (+) indicates the strobe is positively buoyant and floats in water. (-) indicates the the strobe is negatively buoyant and sinks in water. Weight in sea water will vary depending on salinity.
* 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.