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05/13/2006 03:59:34 PM · #1 |
| Is there any method to adjusting curves and levels, or is it just a matter of playing around until the photo looks right to you? |
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05/13/2006 04:01:32 PM · #2 |
Originally posted by margiemu:
Is there any method to adjusting curves and levels, or is it just a matter of playing around until the photo looks right to you? |
That is what I have done when I use it, but I rarely use curves. I like to use HMS or gamma correction myself. Curves and levels is a pain to me. :)
Message edited by author 2006-05-13 16:02:39. |
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05/13/2006 04:08:12 PM · #3 |
Originally posted by espy:
Originally posted by margiemu:
Is there any method to adjusting curves and levels, or is it just a matter of playing around until the photo looks right to you? |
That is what I have done when I use it, but I rarely use curves. I like to use HMS or gamma correction myself. Curves and levels is a pain to me. :) |
HMS and gama correction?? Can you translate that into laymans terms? Ü
I just figured out what curves were yesterday... |
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05/13/2006 04:12:36 PM · #4 |
Originally posted by margiemu:
Originally posted by espy:
Originally posted by margiemu:
Is there any method to adjusting curves and levels, or is it just a matter of playing around until the photo looks right to you? |
That is what I have done when I use it, but I rarely use curves. I like to use HMS or gamma correction myself. Curves and levels is a pain to me. :) |
HMS and gama correction?? Can you translate that into laymans terms? Ü
I just figured out what curves were yesterday... |
Oh, well I use PSP8 (Paint Shop Pro 8). In PSP8 there is, under color adjustments, gamma correction. This does really the same thing as levels, at least to me, and in one easy swoop then playing around in levels. As to HMS, that is Highlight/Midtones/Shadows. It's in the same area. If you use photoshop, I'm not sure where it is, but it should be easy enough to find. Hope that helps :)
Rose
Message edited by author 2006-05-13 16:13:00. |
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05/13/2006 04:31:18 PM · #5 |
I think Gamma correction is much like Curves but with less control. The general principle using Curves is to have the slope steeper in the areas where you have more detail, and flatter in areas of smooth gradient color with less detail.
Curves can also be used to adjust or even reverse colors, for all kinds of interesting effects. You can see some examples with screenshots in this pBase Gallery. |
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05/21/2006 10:26:15 AM · #6 |
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05/21/2006 12:40:01 PM · #7 |
These are really excellent -- much like what I've never gotten around to writing myself : )
The only tiny quibble I have is that I'm one of those print-oriented users who has always found it more intuitive to use the version with the highlights in the lower-left and the shadows to the upper-right. Pull the Curve down to lighten, push up to darken.
I guess 0-255 for black/white might make sense to a computer, but to me it's always made more sense to think of gray values, from 0-100% being white to black -- something being 30% gray makes more sense to me than an RGB value of 120 (or whatever...).
I set my Info Window to Grayscale and CMYK values and work from there.
I recommend that anyone who hasn't worked with Curves read these. |
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05/21/2006 02:09:28 PM · #8 |
Originally posted by margiemu:
Is there any method to adjusting curves and levels, or is it just a matter of playing around until the photo looks right to you? |
I downloaded these curves presets.
Most of the time, the p1 curve or the p2 curve work well for most photos, but I can tweak them to taste.
Here's the link that explains those curves.
//www.outbackphoto.com/workshop/photoshop_corner/essay_17/essay.html
Some more links:
//www.pizzabytheslice.com/tips/photoshop_s_curve.htm
//www.cambridgeincolour.com/tutorials/photoshop-curves.htm
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05/21/2006 02:43:50 PM · #9 |
If you are using curves to correct color cast,go to window-info, so you can see the RGB levels. Then use the eye dropper-color select (I think it is called). Make a selection on something you think should be a neutral gray on the image. Then go to curves, select red, then green, then blue individually looking at the info window inorder to match all three numbers. You can do a similar thing with the histogram window while adjusting your brightness and darkness levels, though it is less objective. Go to radiantvista.com for a bunch of great tutorials.
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