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FORUMS Photography Talk by Genre Critique Corner 
Thread started 06 Nov 2013 (Wednesday) 10:39
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Grand Canyon- Dark Circles in Sky

 
tdonnelly0987
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Nov 06, 2013 10:39 |  #1

Does anyone know why there are small dark circles are in the sky? The photo was edited with Light room, Nik color efex pro and sharpened with Nik outpiter sharpener 3. How docyou correct this?

Any input is greatly appreciated.


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magoosmc
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Nov 06, 2013 10:43 |  #2

Odds are your sensor is dirty. Clone them out and/or clean your sensor.


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tmoore323
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Nov 06, 2013 11:01 |  #3

no picture




  
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tdonnelly0987
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Nov 06, 2013 11:13 |  #4

tmoore323 wrote in post #16429388 (external link)
no picture

Sorry I was having trouble uploading the file because it was too large. Its posted now.




  
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cmh512
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Nov 06, 2013 11:38 |  #5

Looks like sensor dust to me. If your aperture was really small, it could be dust on the camera-side surface of the lens.


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morph2_7
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Nov 06, 2013 11:46 |  #6

+1 for sensor dust. Easy to clone them out in the picture shown but would be better if you clean your camera sensor.




  
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tdonnelly0987
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Nov 06, 2013 14:22 as a reply to  @ morph2_7's post |  #7

Thanks guys. I'll check the sensor tonight. Its possible that it got dusty because I was swapping out lenses quite often.




  
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pninnja
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Nov 06, 2013 22:59 |  #8

I've had this issue in the past, and I know how frustrating it may be. As others have said.. sensor dust is the issue and I agree. One thing to keep in mind is most cameras have an auto dust cleaning button where the camera will vibrate your sensor in effort to shake the excess off. In other cases where the auto function isn't really helpful.. check out some youtube videos to properly clean your sensor. Good luck!


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gjl711
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Nov 06, 2013 23:04 |  #9

+ whatever the count.. Sensor dust. Time for a cleaning.


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PhotosGuy
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Nov 07, 2013 07:33 |  #10

I'd guess that you used a high # f-stop, but since everything is at infinity focus, you probably could have used ISO 100 & f/5.6. Your lens actually is sharper at f-stops about 3 stops up from wide open. So if you don't need f/16, you don't have to clean as much.
Some personal views on Sensor cleaning.


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Bianchi
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Nov 08, 2013 00:17 |  #11

Until you clean your sensor, which should be as soon as possible. In LR PP its a very easy remove of those spots.


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tdonnelly0987
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Nov 08, 2013 10:04 |  #12

PhotosGuy wrote in post #16431731 (external link)
I'd guess that you used a high # f-stop, but since everything is at infinity focus, you probably could have used ISO 100 & f/5.6. Your lens actually is sharper at f-stops about 3 stops up from wide open. So if you don't need f/16, you don't have to clean as much.
Some personal views on Sensor cleaning.

I shot all my photos between f/8 and f/11. I found it pretty easy to edit the sensor dust in Lightroom even tho it can be tedious. I am going to try cleaning my sensor this weekend.

I ran into another problem with a panorama. There is a blue line that runs across 3/4 of the sky. I thought about just cropping the sky out however that leaves the photo too long for my liking.


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Bianchi
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Nov 08, 2013 12:54 |  #13

When you push your image to far in PP, you can experience banding.. That's what your seeing. You actually have it in your first image also.


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vengence
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Nov 09, 2013 07:53 |  #14

Bracketed exposures and combine could do wonders for some of these shots...




  
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Grand Canyon- Dark Circles in Sky
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