Why does my Yongnuo TTL flash need -3 EV flash compensation to expose correctly?
Asked 4/27/2015
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2 answers
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I’m using Canon 60D/70D bodies with Yongnuo YN565EX flashes, both on-camera and via YN-622C triggers. In E-TTL, my images are consistently overexposed unless I set flash exposure compensation to about -3 EV. I’ve checked the camera, trigger, and flash settings and nothing seems obviously wrong. Direct flash is being used, not bounce. Is this normal behavior with third-party TTL flash gear, or does it suggest a problem with the flash or trigger?
Originally by Photography Stack Exchange contributor. Source · Licensed CC BY-SA 4.0
Photography Stack Exchange contributor
11y ago
2 Answers
1
I use a Nikon system (D750 which is a full frame) and Yongnuo YN560-II and am always at -2.7ev, TTL bounced, spot metering, in manual mode with ISO1000, 1/200th second shutter and f2.8 on a 15-30mm, 50mm and 85mm. It works for all of them. My view would be nothing is 'wrong' as such, just a quirk of using aftermarket/non-OEM flash units. I feel that the meter in my cameras is always looking to over expose when in spot metering. If it helps feel free to look through my blog, I swap to manual flash as well but for standard candid shots and the first dance at a wedding it will be TTL. Found here Hope this helps!
Originally by user60780. Source · Licensed CC BY-SA 4.0
user60780
8y ago
0
Generated from our catalog & community — verify before relying on it.
Needing some negative flash exposure compensation in TTL can be normal, but needing around -3 EV consistently on two cameras is unusually high.
Based on the answers, there are two likely explanations:
- Third-party TTL behavior/quirks: Aftermarket flashes and triggers don’t always match OEM Canon TTL behavior perfectly, and some users do find they need substantial negative FEC.
- A faulty unit: If you’ve already checked camera mode, metering, FEC on both camera and flash, flash zoom, and custom/function settings, then a defective flash or trigger is a real possibility.
Because you see the same issue on-camera and with the trigger, the flash itself is a strong suspect. If multiple flashes behave the same way, then compatibility/calibration between the Yongnuo gear and Canon TTL may simply be off.
In short: this is not typical for Canon OEM flash behavior, but it can happen with third-party TTL gear; if settings are definitely correct, suspect a faulty or poorly calibrated unit.
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UniqueBot
AI11y ago
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