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Samsung SEF20A

Flash for Samsung NX Series cameras

Item # 305SEF20A

This item is no longer available.

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Our take on the Samsung SEF20A

Get better-looking flash photos with your Samsung NX Series camera. The SEF20A lets you shoot in low-light conditions from greater distances than your camera's built-in flash will allow. Plus, you can tilt the flash head to direct light where you need it for more professional-looking results. Reflected light provides softer illumination with less glare and fewer shadows when you bounce it off walls or ceilings — ideal for taking pleasing portraits. The flash mounts to your camera's accessory shoe.

Product Highlights:

  • A-TTL (through the lens) flash exposure control
  • five-position tilt flash head (tilts up from horizontal to 45, 60, 75, and 90 degrees)
  • compatible with Samsung NX Series cameras, like the NX10
  • guide number (based on ISO 100): 20
  • uses 2 "AA" batteries (not included)
  • weight: 4.3 oz. (without batteries)
  • 2-9/16"W x 1-3/4"H x 3-1/2"D
  • warranty: 1 year
  • Our 60-day money-back guarantee

What's in the Box:

  • Samsung GN20 Flash
  • Flash stand
  • Soft storage pouch
  • Flash User's Manual (Eng/Spa/Fre + 7 other languages)
  • After-Sales Service Guide
  • Important Notice about your warranty service

Hands-on research

Product Research


Overview: The Samsung SEF20A external flash unit is designed for use with the Samsung NX-series and the TL500 digital cameras.

Power Requirements: The SEF20A is powered by 2 "AA" alkaline or Nickel-Metal Hydride (Ni-MH) rechargeable batteries. With "AA" alkaline batteries, you can get approximately 120 flashes, and the recycling time is approximately 6-60 seconds between flashes. If "AA" Ni-MH batteries are used, you can get approximately 200 flashes with a 5-60 second recycling time.

Flash Angles: If you wish to use bounced flash, you can adjust the angle of the flash unit vertically to 45°, 60°, 75°, and 90°. Bounced flash creates less shadow than direct flash, and the light is more uniformly distributed to the subject.

EV Adjust: You can adjust the amount of flash light from -1.0 EV to +1.0 EV in 1/3 EV increments. The intensity can be adjusted using the EV Adjust button on the back panel of the flash. A row of LEDs will indicate the selected amount of flash in 1/3 EV increments.

Flash Stand: When not using the flash, you can store it on the included stand. The flash unit is supported by its hot-shoe connection on the stand.

Dimensions: Width: 2.518", Height: 1.753" (at 0°), Depth: 3.518", Weight: 4.29 ounces

Our Product Research Team

At Crutchfield, you'll get detailed, accurate information that's hard to find elsewhere. That's because we have our own in-house Product Research team. They verify what’s in the box, check the owner's manual, and record dimensions, features and specs. We stay on top of new products and technologies to help people make informed choices.