Old 07-15-2009, 12:15 AM   #1
Bob Pickering
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Default Help me find the sensor dust..

My eyes are great looking at things 10 miles away but can be challenging on the computer screen.

Can anyone help me find the sensor dust on this RJ so I can get it?

http://www.railpictures.net/viewreje...&key=500439476

Thanks!

BP
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Old 07-15-2009, 12:21 AM   #2
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Start at the second pier from the right and go straight up to the top. It is in the sky, about 10% down from the top.
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Old 07-15-2009, 12:24 AM   #3
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there is also another one at the top center of the photo
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Old 07-15-2009, 12:26 AM   #4
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You might also want to level the shot, the bridge seems lower on the RHS.
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Old 07-15-2009, 12:26 AM   #5
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Bob, these are the three I can spot.
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Old 07-15-2009, 12:59 AM   #6
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Thanks everyone I REALLY APPRECIATE YOUR HELP
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Old 07-15-2009, 02:14 AM   #7
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I trick that I do is zoom in to 200% in my editor, and pan the entire sky with the sliders. They tend to jump out at me better if they are moving.
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Old 07-15-2009, 03:56 AM   #8
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Quote:
Originally Posted by EMTRailfan View Post
I trick that I do is zoom in to 200% in my editor, and pan the entire sky with the sliders. They tend to jump out at me better if they are moving.
Great tip, thanks!

My eyes ain't that great CU anymore 'nether...
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Old 07-15-2009, 06:48 AM   #9
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Quote:
Originally Posted by EMTRailfan View Post
I trick that I do is zoom in to 200% in my editor, and pan the entire sky with the sliders. They tend to jump out at me better if they are moving.
The 5D is notorious for sensor dust, so I have an action set up in photoshop that does an extreme contrast adjustment and allows me to find the dust spots easily. I didn't spot any of them in Bob's shot, but I'm sure they would have shown up nicely in my contrast action. Maybe my eyes are just tired tonight after a long day.
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Old 07-15-2009, 01:23 PM   #10
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Quote:
Originally Posted by JimThias View Post
The 5D is notorious for sensor dust, so I have an action set up in photoshop that does an extreme contrast adjustment and allows me to find the dust spots easily. I didn't spot any of them in Bob's shot, but I'm sure they would have shown up nicely in my contrast action. Maybe my eyes are just tired tonight after a long day.
Another cool tip!

What is the setting for the adjustment?
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Old 07-15-2009, 01:36 PM   #11
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Quote:
Originally Posted by Dennis A. Livesey View Post
Another cool tip!

What is the setting for the adjustment?
Well, just hit record for a new action, open up the contrast adjustment window and move the sliders left and right until the sky is dark enough to expose the dust spots. Stop recording and voila! I have several set up for different sky conditions.
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Old 07-15-2009, 01:42 PM   #12
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Quote:
Originally Posted by JimThias View Post
Well, just hit record for a new action, open up the contrast adjustment window and move the sliders left and right until the sky is dark enough to expose the dust spots. Stop recording and voila! I have several set up for different sky conditions.
Excellent! Thanks Jim.
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Old 07-15-2009, 02:59 PM   #13
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Quote:
Originally Posted by JimThias View Post
Well, just hit record for a new action, open up the contrast adjustment window and move the sliders left and right until the sky is dark enough to expose the dust spots. Stop recording and voila! I have several set up for different sky conditions.
Another good tip: If you have sensor dust in a certain spot on one of your photos, and you don't clean the camera, the dust will be in the same spot in every other shot.

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