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A7 and A7Rm3 manual exposure with autofocus

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7DSINS View Drop Down
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Post Options Post Options   Quote 7DSINS Quote  Post ReplyReply Direct Link To This Post Topic: A7 and A7Rm3 manual exposure with autofocus
    Posted: 14 April 2020 at 17:06
In video mode how can I achieve autofocus while staying in manual exposure mode? A7 and A7Rm3

If I select AF on lens (as with Sony A mount 10-200 2.8 + La-Ea4 or Sony 90mm Macro G) mode is automatically switched to Program Auto.

If I switch AF/MFusing a custom key on the mark3 same thing happens.
If I switch AF/MF using factory dedicated button on th mark 1 same thing happens.

Thanks for your attention!
 



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QuietOC View Drop Down
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Post Options Post Options   Quote QuietOC Quote  Post ReplyReply Direct Link To This Post Posted: 14 April 2020 at 18:19
Unfortunately, manual exposure is not available with video AF for the LA-EA4 (or other SLTs). Video AF will stop the aperture down to F3.5 or wide-open for slower lenses. FWIW: there is no continuous video AF using the LA-EA3 and adapters that emulate it.
Sony A7III HVL-F45RM LA-EA3 LA-EA4 MB-IV MC-11 EF-E II MD-NEX KR-NEX DA-NEX
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Pentax Q7 5-15 15-45/2.8 8.5/1.9 11.5/9 AF-P/Q
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7DSINS View Drop Down
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Joined: 01 December 2006
Country: United Kingdom
Location: Ireland
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Posts: 51
Post Options Post Options   Quote 7DSINS Quote  Post ReplyReply Direct Link To This Post Posted: 14 April 2020 at 20:03
Thank you for the useful and quick reply.



I had noticed exposure parameters changing but not the F3.5 aperture limitation so that is also good to know.
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