TTL without Boundaries


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Cross-brand Wireless TTL Flash Triggering System

X-TTL Timeline

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The first wave of firmware releases has been for Fujifilm, Sony and Sigma. The second wave was Pentax, Olympus and Panasonic. Canon and Nikon will follow as we complete system integration on the V6 II.

(Please check back for updated release dates.)

Cross Brand Wireless TTL

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The X-TTL firmware gives photographers an unprecedented flexibility. The need for matching flashes with the same camera system for on and off-camera TTL flash photography is over – TTL without boundaries.

Features

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On-camera Flash with TTL

Cactus V6 II works on camera as fill flash with cross-brand TTL capability.

Wireless Operation

Simply button-click on the group buttons and you can swap between automatic TTL and manual mode.

Wireless Multi

Let your creativity flow even in a wireless flash setup. The X-TTL firmware supports wireless Multi flash operation.

Camera & Flash Compatibility

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Camera System Compatible Flash System
Fujifilm Canon, Fujifilm, Olympus, Nikon & Sigma Cactus RF60X
(firmware ver. 1.03 or later) ;
RF60
(firmware ver. 2.05 or later).
Sigma Canon, Fujifilm, Olympus, Nikon & Sigma
Sony Canon, Fujifilm, Olympus, Nikon, Sigma & Sony
Olympus / Panasonic M43 Canon, Fujifilm, Olympus, Nikon & Sigma Cactus RF60X
(firmware ver. A01 or later) ;
RF60
(firmware ver. A01 or later).
Pentax Canon, Fujifilm, Olympus, Nikon, Sigma & Pentax
(Cross-brand TTL is not supported: remote TTL only works with Pentax system flashes)

* Use V6 II for Sigma, Canon, Nikon, Olympus, and Fujifilm sytem.
* Use V6 IIs for Sony sytem.

High Speed Sync (HSS/FP)

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The main benefits of High-speed Sync are two-fold: keeping a shallow depth of field at high shutter speeds and freezing a fast moving motion.

Power Sync

Boosts flash contribution above x-sync shutter speed. Perfect for extreme conditions where Normal HSS is not powerful enough.

Rear Curtain Sync

Flash is fired just before shutter closing. The X-TTL firmware supports rear curtain sync automatically.

Exposure Lock

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Flash power lock

Lock flash power output after a desired TTL exposure is achieved. Perfect for consistency in repeat shooting.
(Tips: press and hold the OK button to activate)

Flash compensate

Store a desired flash exposure that will automatically adjust in responding to changes in camera ISO, aperture and shutter speed.

The Road Ahead

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Cactus first launched X-TTL firmware versions for Fujifilm, Sigma and Sony, followed by Pentax, Panasonic/Olympus and will continue to release firmware updates for other camera systems as they become available.












V6 II / V6 IIs Specifications

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Wireless mode

Transmission method:
2.4GHz radio frequency
Number of channel:
16
Slave groups:
4 (A, B, C &D)
Max. effective distance:
100M
Operation mode:
TTL and M
Remote AF assist light:
Support
Remote zoom control:
Support

Exposure Control

Cross brand TTL:
Support (refer to Cross brand Compatibility Table)
Cross brand high-speed sync (HSS / FP):
Support sync speed up to 1/8,000 second
Sync mode:
Normal HSS, Rear Sync and Power Sync
Wireless Multi:
Only on V6 II with Canon and Fujifilm system flashes
Flash exposure lock:
FLASH POWER LOCK and FLASH COMPENSATE

Cross Brand compatibility Table



Camera System


Fujifilm Olympus /
Panasonic (M43)
Pentax Sigma Sony
TTL Flash System
Canon E-TTL / E-TTL II
TTL / M
TTL / M
M
TTL / M
TTL / M
Fujifilm TTL
TTL / M
TTL / M
M
TTL / M
TTL / M
Nikon iTTL
TTL / M
TTL / M
M
TTL / M
TTL / M
Olympus / Panasonic
(M43) TTL
TTL / M
TTL / M
M
TTL / M
TTL / M
Pentax P-TTL -
-
TTL / M
-
-
Sigma SA-TTL
TTL / M
TTL / M
M
TTL / M
TTL / M
Sony P-TTL
-
-
-
- TTL / M
Cactus RF60X / RF60
TTL / M
TTL / M
TTL / M
TTL / M
TTL / M

Extra Feature

Multi Master:
Support up to 20 photographers firing the same set of flashes at their own power setting
Group Sequence:
Tirgger groups of flash in a sequence
Sport Shutter:
Synchronize shutter release time with the master camera
Delay Timer:
Manually adjust flash delay time from 1ms up to 999s
Absolute Power:
Benchmark the power output of different flash models to the same light intensity
Remote Shutter Release:
Optional with shutter release cable
Relay Mode:
Synchronize the shutter release time with flash when using remote shutter release

Operation environment

Operation temperature:
-20°C to +50°C
Camera voltage handling:
Up to 6V
Flash voltage handling:
Up to 300V

Dimensions and Weight

Dimensions:
V6 II: 72mm (L) x 72mm (W) x 42 mm (H)
V6 IIs: 72mm (L) x 72mm (W) x 42 mm (H)
Weight:
V6 II: 96g
V6 IIs: 89g

Power Source and Firmware Update

Power input:
Power input: 2 x AA battery, 3V, 50mA, 0.15W,
mini USB 2.0, DC input 5V
Mini USB port:
Optional power supply and firmware update with Cactus Firmware Updater

Notes:

  • Use Cactus V6 II for Canon, Nikon, Olympus, Pentax, Fujifilm, Sigma system camera and flash.
  • Use Cactus V6 IIs for Sony system camera and flash.
  • For Fujifilm, Olympus and Panasonic cameras, Cactus recommends removing hot shoe metal spring plate for consistent communication between the camera and V6 II. Click here for the tutorial video.



Cross-brand TTL Firmware Compatibility


Flash System (RX)
Canon Nikon Olympus Fujifilm Sigma Pentax Sony RF60 RF60X
Camera system (TX)
Canon coming soon N/A N/A coming soon
Nikon
Olympus V6 II (TX/RX): OLY.A.001
(TTL / M / HSS)
N/A N/A ver.A01 or later
(TTL / M / HSS)
ver.A01 or later
(TTL / M / HSS)
Fujifilm V6 II (TX): FUJ.1.001
V6 II (RX): FUJ.1.001,SIG.1.001
(TTL / M / HSS)
N/A N/A ver.205 or later
(TTL / M / HSS)
ver.103 or later
(TTL / M / HSS)
Sony V6 IIS (TX): SON.1.001
V6 II (RX):FUJ.1.001, SIG.1.001
(TTL / M / HSS)
N/A V6IIS(TX/RX): SON.1.001
(TTL / M / HSS)
Sigma V6 II (TX/RX): SIG.1.001;
V6 II (RX): FUJ.1.001, SIG.1.001
(TTL / M / HSS)
N/A N/A
Pentax V6 II (TX/RX): PEN.A.001
(M / HSS)
V6II (TX/RX) : PEN.A.001
(TTL / M / HSS)
N/A ver.A01 or later
(TTL / M / HSS)
ver.A01 or later
(TTL / M / HSS)

Notes:

  • Apply to all existing or later firmware version

Support

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