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Category: Problems with Photo Equipment - Tips & Tricks

Photography Question 

Wayne L
 

Halos in photos


 
 
A few weeks ago I shot a wedding with my daughter as a back up or 2nd photographer.

All was well before and up through the wedding but then inside with flash “as it had been”, she started to get large halos in about the center of each photo. I thought it was a reflection from behind the subject but I was taking from the same angle and I got no halo.
I checked the flash, the lens, turned it off and back on nothing changed it but the zoom
When zoomed in 45-55mm it got larger, zoom out 30-18mm it got smaller and it appeared to be hex or octagon.
Then just as it started it stopped. I still don’t know what caused it.
It was on a Canon Dig Rebel with 18-55mm lens with 420EX flash and was on shutter Priority 1/160
Anybody have any ideas??? "See attached"

Wayne


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June 08, 2006

 

Peter M. Wilcox
  Based on the shape you describe (octagon) I would suspect that you are seeing internal lens flare imaging the aperture iris diaphram. The picture is a little too small to see clearly, but it looks like there might be something very reflective just out of view to the top. Light reflected from that object could have been causing the lens flare. The color might also indicate a reflection from an uncoated or single coated lens element (multi coated elements have dim greeenish reflections) are you using a protective filter on the front of your lens, and if so is it a high quality multi-coated filter? If it's not multi-coated that could be filter flare.


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June 08, 2006

 

Alan N. Marcus
  Unable to see the attachment however:

This is a specilized form of flare known as a ghost. When shape of octagon, this is the camera's own iris diaphram. This ghost image caused by strong light near subject like sun or spot or maybe stage lighting. Light comes into the multi-element lens and reflects off glass to air and glass to glass junctions. A lens shade helps but will not always prevent.

Photograhy has not yet come of age.

Alan Marcus
ammarcus@earthlink.net


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June 08, 2006

 

Wayne L
  This happened with different backgrounds also. I was using a lens-filter combo. identical to this one and shooting from the same spot and didn't get this. I thought it was reflection also so she shot from another angle and got the same thing.


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June 08, 2006

 
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