Soap bubbles and strange rendering of edges

Started Jun 17, 2013 | Discussions
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bzx Regular Member • Posts: 216
Soap bubbles and strange rendering of edges

Hi all,

Here's a picture I made with a NEX-5 and a manual lens, and while checking if I got the bubble sharp (apparently not so much) I noticed a strange rendering of the areas around the top edge of the bubble. This appears similarly on other bubble shots from the same evening.

Could anyone explain what is the reason for this? The only explanation that I can think of is that as the bubble moves and changes shape, its surfaces produce some micro splashes and they're so thin that the sensor gets fooled and can't render the area properly.. Not sure if that makes any sense I would appreciate a rational answer.

100% crop - enhanced a bit to emphasize the behaviour

Thanks

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t[+]m

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Sony Alpha NEX-5
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adymitruk
adymitruk Contributing Member • Posts: 500
Re: Soap bubbles and strange rendering of edges

Cool phenomenon! Must be something about droplets being emitted off of the bubble. No idea why that would happen, but you have evidence that it's happening!

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bzx OP Regular Member • Posts: 216
bump.. anyone could try to explain please?<nt>
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SQLGuy Veteran Member • Posts: 4,221
Re: bump.. anyone could try to explain please?<nt>

JPEG is a lossy format. Have you tried manually cropping and converting from the RAW image?

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Nex-7 with kit lenses, Contax G 35, and a number of legacy lenses (mostly Canon FD)

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bzx OP Regular Member • Posts: 216
this is RAW

these are crops from RAW image in Lightroom, plus this type of "lossyness" doesn't look like characterictics JPEG.

thanks for looking,

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