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Focus changes when AF-Lock is pressed

Started 7 months ago | Discussions thread
OP Nielk Mike Senior Member • Posts: 1,480
Re: Focus changes when AF-Lock is pressed

Erik Baumgartner wrote:

You’re likely seeing the effect of the lens stopping down. Does your AF-L button also lock exposure?

Also happens with aperture wide open. But even wide open there is a sound of the aperture motor engaging - and that seems to have a small impact on the focus element in some lenses (in my case the 14f2,8 and 18-55.

I have AF-L on a different button and it doesn't lock exposure.

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