Why won’t my Canon 580EX manual power change from a Godox X2T-C/X1R-C?
Asked 1/7/2022
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2 answers
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I can pair and trigger a Canon 580EX with a Godox X2T-C transmitter and X1R-C receiver, and the flash fires from both the shutter and the test button. However, changing the flash power on the X2T-C does not change the output on the 580EX. What is causing this, and is there any workaround?
Originally by Photography Stack Exchange contributor. Source · Licensed CC BY-SA 4.0
Photography Stack Exchange contributor
4y ago
2 Answers
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The Canon 580EX is a very old flash that predates Canon’s introduction of the in-camera flash menu. If you use the 580EX in the your camera hot shoe, the in-camera flash menu will give you an error message. “this menu cannot be displayed. incompatible flash or flash's power is turned off"
Because of this I suspect the 580EX won't be fully compatible with the Godox X1R-C receiver. Godox reverse-engineered the hotshoe/camera menu communication protocol, so the X1R-C probably only has full compatibility with the flashes that can communicate with the Canon flash control menu. (430EX II, 580EX II, and later flash models, and RT flashes)
Originally by user39427. Source · Licensed CC BY-SA 4.0
user39427
4y ago
0
Generated from our catalog & community — verify before relying on it.
Most likely, the issue is compatibility. The original Canon 580EX is an older flash that predates Canon’s later flash-menu communication system. As a result, while it can usually be triggered through the Godox X system, full remote control is limited.
Based on user experience, the 580EX generally works with Godox triggers in E-TTL mode, including flash exposure compensation, but manual power control from the transmitter does not work. The newer 580EX II does support both E-TTL and manual remote control, though some settings like zoom may still need to be set on the flash itself.
So if your 580EX is firing but not responding to manual power changes from the X2T-C, that is likely expected behavior rather than a setup mistake. A practical workaround is to use the flash in E-TTL and adjust flash compensation, or set power directly on the 580EX. If you need full remote manual control, a newer Canon-compatible flash or a Godox flash would be the better fit.
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