Back button focus

[kennlw5]

7d

[WaltA]

I know

[jfo]

Yup......















(What was the question again? )

[David]

Always.

[Local_Hero]

When using back button focusing when does the IS engage?  Is it when you are pressing the focus button or when you press the shutter?

Just wondering because sometimes I lock in my focus with the back button then wait a couple seconds to hit the shutter button (depends on the scene I'm working with).  This has just been something I was wondering.  I'd test it out but I don't currently have a lens with IS.

[jfo]

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@Local_Hero wrote:

When using back button focusing when does the IS engage?  Is it when you are pressing the focus button or when you press the shutter?

Just wondering because sometimes I lock in my focus with the back button then wait a couple seconds to hit the shutter button (depends on the scene I'm working with).  This has just been something I was wondering.  I'd test it out but I don't currently have a lens with IS.

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Not sure if it varies by camera/body, but for the 5DM3 and 7D, IS starts for both when you press the focus button and the shutter. It stays on for a few seconds after you let go of either button.

[kevinb]

This is the very first thing I do to a camera. Been set on my 7D since day one, and when I borrow any other camera, it must be configured!!