Focus problems with bubbles

Started 5 months ago | Discussions thread
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matknu
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Focus problems with bubbles
5 months ago

Hi,

My a55+25/1.8 have serious problems focussing on a moving soap bubble. I can get AF to focus sometimes by aiming at the edge but that's not where I want it. Is this normal or am I doing someting wrong. To get some useful pictures I had to use manual focus and burst mode and move the camera back and forth relative the bubble. I shot loads of photos and just an hadful were ok. A working AF would have been great but I suspect the AF cant stick on the bubble surface!?

Here is one shot that was reasonable sharp.

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Mats

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