Olympus FL-900R Weather Proof Flash


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  • Product Description
  • Specifications
  • What's in the Box?
  • Warranty

The Olympus FL-900R High-power flash with Superb Tracking for Sequential Shooting

  • This is a high-power flash with a maximum guide number of 58.
  • 10-fps sequential shooting tracking performance
  • Compact, lightweight flash that is dustproof, splashproof and freezeproof down to -10°C
  • Useful in all types of photography
  • Compatible with Multi Mode

Guide Number (ISO 100•m)

GN 58 (Firing angle: 100mm)

GN 14 (Firing angle: 7mm)[*]

When using the built-in wide panel

Firing Angle

Covers the angle of view of a 12mm to 100mm Micro Four Thirds lens (35mm equivalent: 24mm to 200mm)

Covers the angle of view of a 7mm to 10mm Micro Four Thirds lens (35mm equivalent: 14mm to 20mm)[*]

When using the built-in wide panel

Built-in Functions

Wide panel, catch light plate

Flash Modes

TTL-Auto, Auto, Manual, FP TTL-Auto, FP Manual, and Multi

Flash Emission Period

Approx. 1/20000 to 1/500 sec. (except when using Super FP flash)

Remote Control (RC)

Flash mode: RC, SL Auto, SL Manual

4 channels

Can control 4 groups of flashes independently from each other (3 slave flash groups + flash on camera body)

Bounce Angle

Up: 0 to 90 degrees, down: 0 to 7 degrees, right: 0 to 180 degrees, left: 0 to 180 degrees


Power: 1.5 W

Color: White

Firing Angle: approx. 70 degrees

Illuminance: 100 Lux @ 1 m

Control mode: Auto, Manual, and Off with adjustment possible by 1 EV step from Full to 1/32

Power Supply

4 AA (R6) alkaline batteries

4 AA (R6) NiMH batteries (Recommended)

Charging Time[1]

Approx. 4.5 sec. (when using AA alkaline batteries)

Approx. 2.5 sec. (when using AA NiMH batteries)

Flash Emission Count[1]

Approx. 160 times (when using AA alkaline batteries)

Approx. 200 times (when using AA NiMH batteries)

LED Emission Time[1]

Approx. 2.4 hours (when using AA alkaline batteries)

Approx. 2.6 hours (when using AA NiMH batteries)

Operating Environment[2]

-10°C to 40°C


W 81.2 mm x H 121.4 mm x D 125.2 mm (excluding protrusions)


382 g (excluding batteries)

Box Contents

Flash stand FLST-1, flash case, bounce adapter, IR filter, instruction manual, Warranty Card

  • Flash stand FLST-1
  • Flash case
  • bounce adapter
  • IR filter
  • Instruction manual
  • Warranty Card