Macro Ring Lite MR-14EX ii over exposes with 90D

[JanHarper]

I’m planning to see the orchids at Kew, and thought I’d better practice using the flash on my new 90D. It worked fine on my 80D.

It is drastically over exposing. I have to set the flash on -3 Exposure and the camera to under expose on -2/3.

I usually work in Av mode, either F5.6 or F8. Very rarely do I go any higher. The ISO is usually on Auto, but even set at ISO200 it still over exposes. Even in P mode it is still over exposing.

I have changed the Camera settings:

• E-TTL II meter to Average
• Slow synchro to 1/250-1/60sec. Auto

I’m beginning to wish I kept the first macro Ring Light, never had a problem with it.

Can anyone solve my problem?

[supergeeman]

Hi Jan,
It could be the flash sync speed in AV. Have you tried it on Auto? does the same happen in manual mode?

[JanHarper]

Thanks for replying.
This early evening I emailed the magazine with my query and got a very quick response from Nina. For some reason the camera Flash Control E-TTL II meter setting was on Average. She suggested it should be set on Evaluative. I immediately noticed an improvement. It was getting dark by this time, but there was definitely an improvement. Tomorrow I will find time to play!
This weekend my usual Valentines Day present is a bouquet of odd but photogenic flowers, so will get plenty of practice in!