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What is this button for - no user manual

Started Jan 31, 2019 | Questions thread
neilt3
neilt3 Veteran Member • Posts: 3,008
Re: What is this button for - no user manual
1

Welcome to the forum .

By default on Minolta and Sony cameras that button is set up as a "focus hold button" .

This works in the following way , for eg.

Say you have your camera set to continuous autofocus , you acquire focus on something and want to recompose , without the point of focus moving .

You press the focus hold button and hold it in and it locks the A/F until you fire the shutter .

.

On cameras with a D.O.F preview button ,( all Sony DSLR's & SLT's ,  and most Minolta SLR's and DSLR's)  the purpose of this button can be reassigned in the camera's menu .

Instead of being a focus hold button it can be used D.O.F Preview button .

With the cameras A/F set to single shot or manual focus , lock focus on something , keep the shutter button held down to lock focus ( in A/F mode ) or manual focus .

Press and hold the button and the camera will stop the aperture down to the taking aperture for you to assess depth of field , allowing you to alter focus or aperture to increase or decrease D.O.F to get what's important in sufficiently in focus .

.

Your camera already has a D.O.F preview button so this is a less useful function than focus hold .

Read your camera manual if you want to change it , probable in the menu , under the "Cog" symbol .

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