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03-31-2016, 11:52 PM   #1
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Decouple AF-L and AE-L when using Back Button in K-S2

From what I've read, when using a camera other than likes of K-3 which have dedicated buttons for AF-L and AE-L, (like the K-S2) we cannot decouple the function of AF-L and AE-L when using the Back button for focusing,

But when using the Back button for focusing, the Shutter Half press probably doesn't do anything (right?). Is it possible to assign a function like AE-L to the shutter Half press??

I had read this on the site:

Back Button Focus: What is it and why should you try it?

"Finally, one of the most overlooked benefits of using the back button to focus is that it frees up your shutter half-press to do other functions like lock the exposure. You will have to enable this option using your cameraís settings menu, and you might not use it on every shot, but itís yet another tool in your photographic arsenal that can help you get better photos."

so I'm wondering if such a thing is present on pentax cameras, or whether it's possible by a firmware upgrade.

I haven't found it on a Pentax K-S2 camera's manual.

Last edited by anu l; 04-01-2016 at 01:15 AM.
07-17-2016, 08:16 PM - 1 Like   #2
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QuoteOriginally posted by anu l Quote
But when using the Back button for focusing, the Shutter Half press probably doesn't do anything (right?). Is it possible to assign a function like AE-L to the shutter Half press??
If you enter the button customization menu and select "Enable AF1", a shutter half-press will still operate the AF (and activate the light meter). If you select "Enable AF2", a shutter half-press only activates the meter.

You can only get the behavior you want if you do not use the back button to focus, and instead select the "AE Lock" setting for it. In that mode your half-press does the focusing and the focus will stay locked as long as you keep the shutter button half-pressed, and your rear button can lock the exposure.

If you enable C4 "AE-L with AF Locked", this would couple AF-L with AE-L (but not vice-versa). The two are otherwise separate as described above.

So, in practice, the only real difference compared to a flagship like the K-3 is that if you want to have a dedicated AE-L button, you can't focus using the back button. Not a big deal on a small camera like the K-S2, IMO.

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