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FORUMS Cameras, Lenses & Accessories Small Compact Digitals by Canon 
Thread started 13 Feb 2013 (Wednesday) 14:48
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Canon 110ih white spots in photos problems

 
Jon
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Feb 13, 2013 20:58 |  #16

-Andrea- wrote in post #15607751 (external link)
The first pic is very strange, in the second I don’t think the dust in the air is the cause.
This is another similar image:

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http://imageshack.us/a​/img228/2545/orbsflash​.jpg (external link)

Looking at the full size of the big orb, dust cannot do this imho. It’s something else.

What's the picture of? And even if one case where orbs occur can't be obviously explained as dust doesn't mean it's never the possible cause. Seriously - search here for "orbs" - you'll find a number of threads on the topic.


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Feb 13, 2013 21:08 |  #17

Jon wrote in post #15607808 (external link)
Nope. With a long lens, the angle of view is very narrow, and the flash is very (relatively) close to the lens axis. Noticed how many nature photographers (especially using the Better Beamer on their flashes) use off-camera flash? With a wide angle lens, the effective distance between the flash and the lens is greater than with a telephoto. Think about it. Distance is relative. Same issue that's responsible for "red eye" with flash. The light source is reflected almost directly back into the light receptor.

Thanks Jon, I never heard of the better beamer but will look into that too




  
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-Andrea-
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Feb 13, 2013 21:26 |  #18

Jon wrote in post #15607823 (external link)
And even if one case where orbs occur can't be obviously explained as dust doesn't mean it's never the possible cause.

I dont have the truth in my hands, but one case could clear up more cases. Can you prove the contrary? Dont think so.




  
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zacker
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Feb 14, 2013 08:52 |  #19

I know most times that "Orbs" or what is called Orbs by the paranormal crowd is really just something going through the FOV at a slower (or was it faster) speed than the main subject. like a video i saw of a bunch of the classic "Orbs" flying about too and fro all mysteriously and spooky like, but then the guy filming it either slowed the vid down (or sped it up, again, I forget) what were freaky little ghostly "Orbs" turned out to just be a bunch of bees zooming about the flowers. But these SPOTS im seeing in the posted pics look like they are either some strange reflections from flash use somhow or dust / spots / droplets on the inside of the lens or sensor somewhere. Hmmmm...


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-Andrea-
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Feb 14, 2013 16:38 as a reply to  @ zacker's post |  #20

In this video you can see the same picture with and without orbs:

http://www.youtube.com​/watch?v=GkRPTHAtfFE (external link)




  
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Jon
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Feb 14, 2013 19:56 |  #21

That's just dust or water droplets in the air. The key is that you're using flash, and the flash reflects back off particulates that are close to the camera. The closer they are, the brighter they are. Really. Sorry to burst your bubble (which would add to the particulates causing the orbs, I agree), but it's not supernatural.


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-Andrea-
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Feb 14, 2013 20:08 as a reply to  @ Jon's post |  #22

Wich particulate could have a “perfect” shape with others geometries inside as posted in the example? How do you explain different circles in one bigger circle? And the three lines border? A little dust? With all respect, it’s impossible for me. Unearthly or not unearthly.




  
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Jon
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Feb 14, 2013 20:21 |  #23

Sorry you don't like the answer - but it's what the cause is. See also here. They look round because they're out of focus. And irregularly-shaped objects will cause multiple micro-reflections that will have their own bokeh. The quality of the bokeh depends on the quality of the lens.


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-Andrea-
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Feb 14, 2013 20:35 as a reply to  @ Jon's post |  #24

It dooesn’t matter what I like, I cannot see nothing in the link to uphold what you’re saying. Nothing. Fabulous explanation for me, at least. Someone think it different, as the girl in the posted video.




  
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Jon
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Feb 14, 2013 20:40 |  #25

Fine. Go out while it's snowing, or raining, at night and take a flash picture. See for yourself.


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-Andrea-
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Feb 14, 2013 20:44 as a reply to  @ Jon's post |  #26

Look like as posted above.




  
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Canon 110ih white spots in photos problems
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