Odd blotches in the sky - why??

philthejuggler

philthejuggler

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Phil
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Hi all - I took this image last night on my 1D3, 16-35L MkII, 580EXII, 1/40s, f2.8, ISO1600.

Any ideas what the circular blotches in the sky are? Not seen them on any other photo I've taken!!

Many thanks

Phil


 
It looks like a wet evening. I think it might be the flash picking up the rain, or mist in the sky. I've had quite a bit of this lately.
 
I see from the EXIF your flash fired so would suggest possibly dust in the atmosphere.
 
Thanks for the suggestions, all....

Deckard said:
Were you using a filter at all Phil?
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Yes - a high-quality UV - never caused me issues before, but I'm open-minded...

Scarecrow said:
That looks like light halos caused by dust on the lens/filter.
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Hmm - lens was spotless...I can rule that out.

Loopy said:
It looks like a wet evening. I think it might be the flash picking up the rain, or mist in the sky. I've had quite a bit of this lately.
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Interesting idea - it had only just stopped raining after several hours...

nikonuser said:
I see from the EXIF your flash fired so would suggest possibly dust in the atmosphere.
Click to expand...

Ok - that could cause large circles then?

Thanks for all the suggestions, guys - very odd!!!

Phil
 
It's Aliens mate!!

Seriously if your flash fired then it's most likely dust.
 
I'm going to put my money on gnats in the OOF foreground.

Bob
 
Thanks for all the suggestions guys - it isn't sensor dust - I was wide open on a fast zoom & the sensor was spotless when I picked up the camera a few days ago.

The gnats / dust in air suggestion sounds the most plausible!

Phil
 
philthejuggler said:
The gnats / dust in air suggestion sounds the most plausible!

Phil
Click to expand...

A couple of years ago, Mrs CB tried some arty shots of daffodils at night and managed to capture a passing gnat almost in focus.
Now there's an idea :thumbs:

200 shots and a set of discharged flash batteries later, I had an abundance of blotches just like yours.....alas, no church appeared in the background.

Bob
 
Canon Bob said:
A couple of years ago, Mrs CB tried some arty shots of daffodils at night and managed to capture a passing gnat almost in focus.
Now there's an idea :thumbs:

200 shots and a set of discharged flash batteries later, I had an abundance of blothces just like yours.....alas, no church appeared in the background.

Bob
Click to expand...

Focussing on gnats in flight?? Sounds like a job for the mp-e 65mm and some pretty impressive technical ability!

Phil
 
philthejuggler said:
Focussing on gnats in flight?? Sounds like a job for the mp-e 65mm and some pretty impressive technical ability!

Phil
Click to expand...

Nope, a pre-focussed 180L on a 5D (for maximum FOV).

Bob

Edit....how is it that someone always manages to quote your spelling mistakes whilst you're fixing them
 
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