Godox TT685C Thinklite TTL Flash

I bought a Godox TT685C Thinklite TTL Flash from Roberts Camera recently. I placed the order around midday on Friday, 02 November 2018 and the parcel was delivered on Monday, 05 November. Impressive!

The Backstory

Godox flash photography gear, published on 09 October 2019, features my initial review of a Godox TT685F Thinklite TTL Flash that I bought from B&H Photo. In short, the flash doesn’t work as advertised by both Godox and B&H Photo, and B&H has failed repeatedly to “make it right.” (More about that in a follow-up blog post.)

Given my negative experience with the TT685F flash, regular readers of my blog might be wondering “Why would you buy another Godox flash from B&H Photo?” More about the first part of that question in a minute. As I already mentioned, I DIDN’T buy the new Godox TT685C flash from B&H Photo. Read between the lines.

Testing 1, 2, 3…

I have been testing the new TT685C flash since the day after it was received. Here’s what I know so far: In a nutshell, the flash works as advertised.

The Canon-compatible version of the Godox TT685 functions in five modes: a non-wireless, stand-alone mode (TTL, Manual, and Multi); and four wireless modes (optical master/slave modes, and radio master/slave modes). The Godox TT685C can do almost everything the comparable Canon Speedlite 600EX II-RT does at a price point approximately six times less than Canon’s MSRP of $579.99.

All of that being said, there is one problem with the Godox TT685C and it’s a big problem in my opinion. More about this in a follow-up blog post.

A Canon-compatible flash that works like one made for Fujifilm

For my money, what makes the Godox TT685 product line of flashes special is they are cross-compatible. In other words, flashes made for different camera manufacturers (e.g., Canon, Nikon, Olympus/Panasonic, and Sony) can work together.

The following photo shows the LCD of my new Godox TT685C flash. The flash is set for radio slave mode (Channel 1, Group A). Notice the word “FUJI” in the lower-left corner of the display that indicates the Canon-compatible flash is working like a Fujifilm-compatible flash.

In this case, the flash was controlled by a Godox XProF radio flash trigger mounted on the hotshoe of my Fujifilm X-T1 digital camera. A Godox TT685F external flash, fitted with a Lastolite Ezybox Speed-Lite 2 flash modifier, was located off-camera; the TT685F was used to light the photo, shown below. Also notice the icon that indicates the flash is functioning in HSS mode; the HSS icon is located below 24mm (manual zoom) and the audio speaker icon (indicating sound is on).

Godox TT685C external flash LCD panel display (Slave mode).

Results from hands-on testing (so far, so good)

  • Off-camera radio slave mode works, including TTL and HSS, when the Godox TT685C is controlled by a Canon MT-26EX-RT Macro Twin Lite set for radio master.
  • Either Godox XProF or TT685F mounted on Fujifilm X-T1 hotshoe: Camera-mounted flash is Channel M; off-camera TT-685C (set for radio slave) is Channel A. Works as expected, including TTL and HSS.
  • Godox TT685C mounted on Fujifilm X-T1 hotshoe: Flash fires, Manual mode only (TTL, HSS don’t work); when the flash is set for optical master (in Manual mode), it can trigger an off-camera Nissan i40 external flash unit (set for SF Mode) confirming that optical master does in fact work.

Related Resources

Copyright © 2018 Walter Sanford. All rights reserved.

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