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Category: New Questions

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Photography Question 
Pat Harry
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member since: 11/26/2006
 

Purple spot on image - what is it?


 
  Purple Spot - what caused it?
Purple Spot - what caused it?
© Pat Harry
Nikon D7000 Digita...
 
 
Can you see the purple spot at the base of the monument? What caused this?

12/8/2012 6:18:00 AM

 
Gregory LaGrange
BetterPhoto Member
gregorylagrange.org

member since: 11/11/2003
  I see the different color in the stones/bricks. I don't see what I'd call a spot. Unless you could upload a photo more zoomed in on the area.

12/9/2012 11:58:46 AM

 
Pat Harry
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member since: 11/26/2006
 
 
 
© Pat Harry
Nikon D7000 Digita...
 
 
Thanks, Gregory. Here is another one - I cropped tighter. The purple spot (or area) is a on the monument, a bit above the middle.

12/9/2012 12:26:29 PM

 
Christopher J. Budny
BetterPhoto Member
chrisbudny.com

member since: 10/3/2005
  My first guess would be something on your lens, causing some kind of light diffraction? I see 3 spots in the clouds (to the right of the monument, in the 1st photo) that suggest your lens may have splatters of something on it?

12/11/2012 5:22:54 AM

 
Gregory LaGrange
BetterPhoto Member
gregorylagrange.org

member since: 11/11/2003
  Chromatic aberration makes a purplish color like that. Usually if something on the lens shows up, it's on the side of the aperture blades closest to the camera, like sensor dust shows up. So it could be a finger print on the rear elements. Or check for mold inside the lens.
The spots in the clouds look like something on the sensor.
You can always make a white screen on your monitor and take pictures of it at small apertures and see if they show up. That's an easy way to check for dust on the sensor.

12/11/2012 9:19:40 PM

 
Pat Harry
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member since: 11/26/2006
  Thank you both. I'll try cleaning it once more and see if I can get it. If not, then it's time for a professional clean.

12/14/2012 8:08:03 AM

 
Jeff E Jensen
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member since: 6/8/2008
  I think it might be aliens. . .

12/14/2012 10:12:54 AM

 
Pat Harry
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member since: 11/26/2006
  Jeff, I'm sure you are right. Because I would never let my lens get dirty or smudged. Nope. Never. That's my story and I'm sticking with it.

So aliens it is.

12/16/2012 6:29:14 AM

 

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