Sigma EF-500 DG ST NA-iTTL Flash for Nikon

The Sigma EF-500 DG ST flash for Nikon is a high-powered, dedicated shoe-mount speedlight with full Nikon iTTL metering compatibility. With a guide number of 50 at ISO 100, this flash delivers professional-grade output for portraits, events, weddings, and on-location photography. iTTL (intelligent Through-The-Lens) metering ensures accurate, consistent flash exposures by communicating directly with your Nikon camera body — giving you reliable results in any lighting situation without manual trial and error.

Key Features

• Guide Number 50 (ISO 100, 105mm) — powerful output for indoor and outdoor flash photography
• Full Nikon iTTL metering compatibility for precise, automatic flash exposure control
• DG designation — optimised for digital sensors with accurate colour temperature output
• Bounce and swivel head for versatile bounce flash and off-camera techniques
• Auto-zoom flash head adjusts coverage to match lens focal length
• AF assist beam for reliable autofocus in low-light conditions
• Compact and lightweight design for everyday carry and travel

Technical Specifications

• Model: Sigma EF-500 DG ST
• Guide Number: 50 (ISO 100 / 105mm)
• Compatible Mount: Nikon iTTL
• Flash Coverage: 24–105mm (auto zoom)
• Bounce: 0–90° vertical
• Swivel: 0–270° horizontal
• Power Source: 4 x AA batteries
• Recycle Time: Approx. 0.1–6 seconds

What's in the Box

• Sigma EF-500 DG ST Flash unit (Nikon iTTL)
• Flash stand
• Protective pouch
• User manual