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Thread started 24 Sep 2009 (Thursday) 23:11
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Red dot in photoshops bridge?

 
lbcyalater
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Sep 24, 2009 23:11 |  #1

Ok I have noticed a little red dot which appears to be a dead pixel in SOME of my shots when I look at them in photoshops bridge program. The only thing is when I open it in photoshop the dot disappears...Am I going crazy?? I tried purging the folder and for some reason it got rid of some of the dots...HELP!


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tonylong
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Sep 24, 2009 23:43 |  #2

Were these Raw shots? Camera Raw and Lightroom apply some color noise reduction by default that seems to get rid of some hot pixels. As far as opening a jpeg in Photoshop, I don't think that would happen, though, but hard to tell...


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davidcrebelxt
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Sep 25, 2009 00:50 |  #3

Also, if it is in camera RAW seeing the dots, make sure its not the highlight clipping warning. In LR, we toggle that by clicking the triangle in top-right of histogram display... should be similar in Bridge/ACR.


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tim
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Sep 25, 2009 03:44 |  #4

Show us photos. Screen shots if necessary.


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lbcyalater
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Sep 25, 2009 11:45 as a reply to  @ tim's post |  #5

ok so i found a solution but still havent found a reason why it happened. I had to open all the raw files in photoshop then I purged it in bridge and it seemed to get rid of it all.

The main reason it was scarying me was the fact that I may have used live view while facing the sun...which stupid me knew was bad but forgot when shooting. Does anyone know if this could possibly have led to a serious problem?


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tonylong
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Sep 25, 2009 12:10 |  #6

I haven't myself heard reports of this kind of problem, but certainly if you were to leave the sensor exposed to the sun with a longer lens for a significant amount of time you could see some damage. I've had mirror lockup on for a few seconds without damage, though. You do hear about that leading to getting your shutter fried, but rarely.

If this is more than a hot pixel, post some pictures of the problem.


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lbcyalater
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Sep 25, 2009 12:13 |  #7

tonylong wrote in post #8707989 (external link)
I haven't myself heard reports of this kind of problem, but certainly if you were to leave the sensor exposed to the sun with a longer lens for a significant amount of time you could see some damage. I've had mirror lockup on for a few seconds without damage, though. You do hear about that leading to getting your shutter fried, but rarely.

If this is more than a hot pixel, post some pictures of the problem.

I would but like I said I found a "solution" that gets rid of them but it still worrys me for the future and if this is going to appear on every pic I take now


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davidcrebelxt
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Sep 25, 2009 12:18 |  #8

I may be mistaken, and may vary from camera to camera... but I thought live view used a secondary sensor... not the main imaging sensor. If that were the case, your actual imaging sensor shouldn't have been exposed unless you did a long exposure.


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lbcyalater
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Sep 25, 2009 12:23 as a reply to  @ davidcrebelxt's post |  #9

ok well just to see what I am talking about I mocked up what I was seeing (sorry done in paint, im at work)

First is the image that I see in bridge

IMAGE: http://farm3.static.flickr.com/2440/3953821374_6a807e49ef_o.jpg

and the second image is what I see in raw editor
IMAGE: http://farm4.static.flickr.com/3258/3927222470_e4655e24e3_o.jpg

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Angry ­ Dad
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Sep 25, 2009 12:41 |  #10

Is the red dot in the same place on all your effected photos?


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lbcyalater
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Sep 25, 2009 12:46 |  #11

Angry Dad wrote in post #8708176 (external link)
Is the red dot in the same place on all your effected photos?

yup


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tonylong
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Sep 25, 2009 12:51 |  #12

Try turning off all noise reduction in ACR and see if it shows up.

If it is in all your shots, and still is in shots you currently take, I'd say the camera needs fixin'.


Tony
Two Canon cameras (5DC, 30D), three Canon lenses (24-105, 100-400, 100mm macro)
Tony Long Photos on PBase (external link)
Wildlife project pics here (external link), Biking Photog shoots here (external link), "Suburbia" project here (external link)! Mount St. Helens, Mount Hood pics here (external link)

  
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Chris1le
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Sep 25, 2009 14:17 as a reply to  @ tonylong's post |  #13

Lightroom/ACR automatically remove hot pixels. Good luck having them fix one dead pixel.


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tonylong
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Sep 25, 2009 14:23 |  #14

Chris1le wrote in post #8708782 (external link)
Lightroom/ACR automatically remove hot pixels. Good luck having them fix one dead pixel.

If you look at that spot, it is not "one dead pixel" -- it's a bad spot.


Tony
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Tony Long Photos on PBase (external link)
Wildlife project pics here (external link), Biking Photog shoots here (external link), "Suburbia" project here (external link)! Mount St. Helens, Mount Hood pics here (external link)

  
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tim
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Sep 25, 2009 18:47 |  #15

Canon can remap bad pixels. Shooting into the sun's fine, the sensor's only exposed for a very small fraction of a second.


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Red dot in photoshops bridge?
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