(1dx) Best way to use flash in Av mode?

Started Aug 18, 2013 | Discussions thread
AnthonyL Senior Member • Posts: 2,893
Re: (1dx) Best way to use flash in Av mode?

Ludvig wrote:

Why don't you use High Speed Sync for the flash? I guess the shutter is flashing in the viewfinder because the shutter speed is too low. Press the third button on the flash until you see the flash symbol and a H next to it.

I've been trying to follow this. Where was it said the shutter is flashing in the view finder? As far as I recall the OP talked about slow shutter speeds only.

shutter speed not particularly fast (sometimes 1/25)

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