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01/03/2005 01:17:51 AM · #1 |
I don’t know a lot about Photoshop 7 but I took a few pictures today and when I went to post process as I always do this is what happens when I do just a simple ‘auto level’. My question is do I have my settings in PS7 off or what else may be the reason. I know there is a lot of sunlight but it has not done this before. I have about 40 pictures of these birds [some good] and they all do this if I auto level, auto contrast, or auto color. Any suggestions?
The picture̢۪s below is an example. All I did to the fist one is resize to 640X480 and the second one the same but I applied auto level.
 
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01/03/2005 01:20:13 AM · #2 |
I think this usually happens when the original shot is very low contrast. When auto-levels expands the histogram, you take a shot with a very shallow distribution of color levels and spread them out over a much larger area. Hope that helps. (also hope I'm right.. :)
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01/03/2005 01:25:17 AM · #3 |
You may be right. After reading your post I pulled up the Histogram on the original image and it's right in the middle like a bell curve with no blacks or whites. But what puzzles me is the birds are white, why didn't the histogram pick them up? Puzzled
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01/03/2005 01:25:23 AM · #4 |
Were you using a Polarizer?
I have seen that happen when I use one, and why I go into curves now instead of using the auto-feature.
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01/03/2005 01:28:16 AM · #5 |
Originally posted by SDW65:
You may be right. After reading your post I pulled up the Histogram on the original image and it's right in the middle like a bell curve with no blacks or whites. But what puzzles me is the birds are white, why didn't the histogram pick them up? Puzzled |
Also, I think the default action of auto-levels is to expand each channel's histogram individually, so looking at the full RGB histogram might be a thin bell in the middle, but looking at them separately might reveal even more extreme histograms... (building on a shaky theory is always dangerous... )
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01/03/2005 01:33:18 AM · #6 |
Originally posted by BradP:
Were you using a Polarizer?
I have seen that happen when I use one, and why I go into curves now instead of using the auto-feature. |
No Polarizer. Most of these were taken in burst mode. Does anyone know how I can reset PS7 settings back to default. The reason I ask is because I use to have a box pop up and ask me what to do when loading an image, now I don't. I think I may have messed with PS7 settings and caused some problem as well. But I don't know
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01/03/2005 02:12:02 AM · #7 |
Originally posted by SDW65:
... Does anyone know how I can reset PS7 settings back to default. The reason I ask is because I use to have a box pop up and ask me what to do when loading an image, now I don't. I think I may have messed with PS7 settings and caused some problem as well. But I don't know |
In the General Preferences dialog (Edit/Preferences/General..) there is a button that reselts all warning dialogs to their default state -- sounds like that is what you are looking for.
David
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01/03/2005 02:16:10 AM · #8 |
| This is really odd. I tried auto levels in PS CS and got better results. Maybe there's a flaw in 7's auto levels or an improvement in CS. |
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01/03/2005 02:19:16 AM · #9 |
The simple solution is to stay away from "auto-anything" in PS. I find they rarely do anything I want them to do. Auto color balance is especially quirky, autolevels isn't much better. They only work tolerably well on images that in their raw state closely approximate what you're after.
Robt.
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