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Key Features: Powerful Flashing Index - GN: 32 (overload ISO100) Versatile Digital Support - Compatible with All Cameras via Optic Cable Nikon TTL Compatibility - USB Support for Nikon Camera TTL Wide Flash Coverage - 100° x 100° Beam Angle for Comprehensive Illumination Flexible Battery Options - Works with 1.5V Alkaline AA Batteries and 1.2V Nickel Metal Hydride AA Batteries Rapid Lightning Time - Up to 500 Flashes (Alkaline) or 600 Flashes (Nickel Metal Hydride AA Batteries) Quick Recycle Speed - 5 seconds (Alkaline) or 4 seconds (Nickel Metal Hydride) Easy Connectivity - Supports 5 Pin Socket and Optic Cable Connection Clear Reflect Instructions - LED Light Indicator (Red) Accurate Color Temperature - 5600K for True-to-Life Lighting Precise Focusing Light - 3W LED with Auto Close after 8 Seconds and Exposure Trigger Dive Deep - Pressure Depth Rating of 100m/328ftEnha Need Exposure Control - Adjust Luminosity (Flash Index) and Choose from 11 Gradations (GN1 / 1.4 / 2.8 / 4 / 5 / 5.6 / 8 / 11 / 16 / 22 / 32) TTL Compensation Options - Fine-Tune Exposure with 11 Stages (-0.3 / -0.7 / -1.0 / -1.5 / -2.0 / 0) (+0.3 / +0.7 / +1.0 / +1.5 / +2.0) Compact Dimensions - Measures 105 x 163 x 9 for Easy Handling and PortabilityPackage Including: 1 x ST-100-Pro Strobe. 3 x Soft light filter 1 x Optical fiber Cable 1 x O-ring 1 x Clean cloth 1 x User manual
Remarkable Power and Coverage With a Guide Number of 32 and an impressive underwater coverage angle of 100x100 degrees, the ST-100-Pro delivers stunning brightness and expansive illumination, allowing you to capture every detail of the underwater world
Compact and Lightweight Design Despite its powerful performance, the ST-100-Pro maintains a lightweight and compact body, providing convenience and ease of use, both in and out of the water
Shutter-Linked Focus Light The built-in shutter-linked auto-off focus light provides a powerful 800 lumens of brightness to assist with focusing on your subject. It automatically turns off in sync with the shutter release, optimizing battery life and simplifying your workflow
S-TTL Auto and Manual Flash Modes The ST-100-Pro features an evolved and accurate auto exposure system, S-TTL, which ensures precise exposure control. Additionally, with 11 steps of manual flash control in 1/2EV increments, you have enhanced flexibility and control for professional-level photography.
Exposure controloptical cable/USB synchronize with TTL,adjust the luminosity(flash index),M grade by turnable button