Odd blotches in the sky - why??

philthejuggler

philthejuggler

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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.
 
Yes, it is most likely dust in the air that the flash put a bit of light into, very common
 
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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