ORLIT RT-600C – TTL Speedlite Released



Adorama have announced the ORLIT RT-600C TTL Speedlite, providing both radio Master and Slave modes directly compatible with the Canon RT radio system.

Released alongside the ORLIT RT 610 TTL Cordless Strobe, the RT-600C Speedlite are Adorama’s version of the recently announced Jinbei 600EX-RT Speedlite. And both lights in the USA are available exclusively from Adorama.

At the time of release the ORLIT RT-600C are only the second, third-party speedlight currently available to provide both radio Master and Slave modes compatible with Canon’s 2.4GHz RT radio system.

The RT-600C have stepped up though with more attention to detail, and now featuring most of the more advanced features provided with the original version Canon 600EX-RT Speedlite, including –

  • Gel holder and color temperature sensor
  • Auto exposure sensor, and Ext.A  / Ext.M modes
  • 3 LED AF assist light
  • Flash head tilt & swivel lock button
  • Tight foot with advanced level lock
  • Full 600EX-RT Custom Functions and Personal Functions



The Orlit RT-600C provide similar power to the original Canon 600EX-RT, with a guide number stated as 55m (ISO100 / 200mm).

As well as providing 20-200mm zoom, ETTL, HSS to 1/8000s, and Second Curtain Sync etc.

Full power recycle time is under 3 seconds, and an external HV battery port is also provided.

A dot matrix LCD screen and interface are all very similar to the original 600EX-RT.

NOTE – also like the original Canon 600EX-RT there is no USB port provided for firmware updates.






  • Guide Number – 55 Metres (ISO 100 and 200mm Zoom)
  • HSS to 1/8000th
  • Flash Mode – ETTL II /M / Multi
  • 1st Curtain Sync / 2nd Curtain Sync
  • FEC – 1/3rd Increments
  • Manual Flash – 1/128 – 1/1 Output Control (1/3rd increments)
  • 20-200mm Auto and Manual Flash Zoom
  • 2.4GHz RT Radio Master and Slave Modes
  • Canon Optic Wireless Master and Slave Modes
  • Recycle Time – Aprox 0.1 – 3 Sec
  • Flash Groups – Radio A/B/C/D/E, Optic A/B/C
  • Channels – Radio 1 – 15, Optic 1 – 4
  • Custom / Personal Functions
  • Linked Shot
  • Sound Prompt
  • Heat Protection
  • LCD Back Light
  • AF Assist Light
  • Auto Exposure Sensor
  • Head Tilt 90 / -7 Degrees, Swivel 180 Degrees Left & Right
  • Tilt Swivel Lock Button
  • Large Dot Matrix LCD Screen
  • Bounce Card & Wide Angle Diffuser
  • Fast Clamping Foot
  • External HV Battery Port
  • PC Sync Port
  • 2.5mm Port
  • Weight – 430g
  • Dimensions – 142 x 125 x 78mm
  • Power – 4 x AA Batteries




Like the original Canon flash, the Orlit RT-600C provides both Canon Optic Wireless Master and Slave modes, along with the RT radio Master and Slave modes.




Unlike most third party speedlites, Orlit have included the gel color temperature sensors located under the flash head. (Which can automatically adjust the cameras white balance setting to match).

And a 600EX-RT style gel holder and CTO gel are be supplied with the flash.

Also very rarely included in third party version of the Canon speedlites is an Auto Exposure sensor located on the front of the flash, and Ext.A / Ext.M flash metering mode.



The Orlit RT-600C provide a Canon style external HV battery port, and PC sync port.

Though also like the original Canon 600EX-RT, the Orlit RT-600C unfortunately do not provide any USB port for firmware updates.




The Orlit RT-600C also provide a multiple beam AF assist light. With different combinations of the 3 LED lights engaged depending on the AF points selected in the camera.

This is still not quite the same as Canon’s AF assist lights though, as all 3 lights in the RT-600C project vertical line patterns, just at different sizes. Still much better than most single LED systems.






Flash Exposure Control
RT ETTL II (Master or Slave, with Groups), Ext.A, Ext.M, Manual Flash
RT Radio Range
>330ft / 100m
RT Radio Channels
Exposure Compensation Range
3 stops in 1/3 of a stop increment
Power Source
AA Alkaline battery, External HV Power Pack
Bounce Function
0 to 360 horizontally (180 in any direction) and -7 to 90 vertically
Lens Coverage
20-200 mm with automatic or manual zoom control and a pull out 14mm wide angle diffuser
Recycle Time
< 3 seconds
Guide Number
182 Ft, 55 Meters @ISO 100< 200mm zoom
Triggering Modes
Hot Shoe, Canon RT/ETTL II remote, Orlit TR611C, Sync Port, Optical Slave
Power Control
1/128th power to full power in 1/3 stop increments
17 oz / 430 g
6 x 5 x 3 in / 142 x 125 x 78mm





The ORLIT RT-600C Speedlites are available for pre-order now from Adorama for $169.95.


ORLIT  – Website 


  1. Dax 8 months ago

    Give them Li-Ion and I’m on board. Until then Cheetah flashes rock.

  2. Don 8 months ago

    Third party and no firmware update compatability is a joke… new cameras can’t work with it ugh

  3. jim 8 months ago

    will wait for reviews

  4. Omar 7 months ago

    Wanting to clarify, Adorama states this model does have a USB port? Which is correct?

    • Author
      Flash Havoc 7 months ago

      Hi Omar,

      I think that must be a mistake, because I can not see a USB port anywhere in the flash.

  5. Jeff S 6 months ago

    No USB, however, it seems to be nicely built, performance is good, has a signal checker, and works with other Canon and Jinbei RT devices like the Orlit 610. Picked up one last week and two on sale (24% off at Adorama this weekend).

    • Author
      Flash Havoc 6 months ago

      Hi Jeff,

      Thanks for that. Did you try the flash mounted on the camera? If so how did you find the base level TTL exposure? And also how are the FEC adjustments if you go over + or – 1.0 FEC?

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