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Rent NowThe Canon Speedlite 420EX is a compact, versatile shoe-mount flash unit designed for Canon EOS film and digital SLR camera systems. Featuring E-TTL (Evaluative Through-The-Lens) automatic flash metering, it delivers accurate flash exposure by evaluating scene lighting through the camera’s lens prior to exposure. With a guide number of 138′ (42m) at ISO 100 (105mm position), it offers a bounce and swivel flash head for softening harsh shadows, an auto-zoom head covering 24mm to 105mm focal lengths, and a built-in AF-assist beam to aid focusing in low-light environments.
Key Features and Specifications
* E-TTL / TTL Automatic Metering: Integrates seamlessly with Canon EOS bodies to deliver precise, exposure-balanced flash output.
* High Guide Number: Guide number of 138 ft (42 m) at ISO 100 in the 105mm zoom position.
* Flexible Bounce & Swivel Head: Tilts upward from 0° to 90° and swivels left 0° to 180° and right 0° to 90° for creative light modification and shadow reduction.
* Automatic Zoom Head: Auto-detects sensor size and lens focal length, adjusting flash coverage across a 24mm to 105mm range.
* Near-Infrared AF Assist Beam: Emits a focus-assist grid in low light to help the camera body achieve sharp focus lock.
* Wireless Slave Function: Functions as a wireless slave flash when triggered by a Speedlite transmitter or compatible master flash unit.
* AA Battery Power: Powered by four widely available standard AA batteries (alkaline, lithium, or NiMH).
Condition and Included Accessories
* Included Accessories: Slip-on flash diffuser dome included. Soft protective carrying case and mini flash stand (tabletop stand) are NOT included.
