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02/11/2005 03:06:53 PM · #1 |
| Whats is difference bewteen Level and Curve in PS |
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02/11/2005 03:29:16 PM · #2 |
| Good question, I would like to know also. |
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02/11/2005 03:56:47 PM · #3 |
My uneducated guess would say they do the same thing. Levels depends on linear sliders, curves utilizes a bell shaped curve or any organic form you choose. Curves gives you more precise control (so I hear) but I've always relied on Levels and have been happy with it. I mess things up too easily with curves.
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02/11/2005 04:00:20 PM · #4 |
Try this link for a tutorial
For me, as a non-expert PS user, I like levels for the first round of rough image processing and curves for more precise changes..watch out though, curves can make things look very odd if not applied with care....as it mentions in the tutorial.
Ben |
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02/11/2005 04:06:20 PM · #5 |
Think of it as the difference between having a tone control (treble/bass) and a 12-band graphic equalizer for your sound system. Curves allow more precise application of tonal changes to a limited range of pixels.
Check here and also here for some examples of the effects they can have.
Message edited by author 2005-02-11 16:08:36. |
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02/11/2005 04:13:52 PM · #6 |
Originally posted by GeneralE:
Think of it as the difference between having a tone control (treble/bass) and a 12-band graphic equalizer for your sound system. Curves allow more precise application of tonal changes to a limited range of pixels. |
Well stated! That's the point I was trying to get across but couldn't articulate myself today.
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02/11/2005 04:13:53 PM · #7 |
The genral has described it well with his comparison. With curves you control more. However, keep in mind that all similar tones are affected. So if you find an area in the image too dark or too light you can click on the specific area and a marker will appear in the diagonal of the curves box. You then can lock, by clicking, the top and bottom areas of where this marker appeared and then proceed to tweak the selected area. By going into the channels you can do precise surgery. It is also great for toning images.
On the other hands, levels is more across the board of the spectrum. Curves allows individual areas to be selected and changed.
Message edited by author 2005-02-12 12:22:24. |
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02/11/2005 04:20:55 PM · #8 |
| In Advanced editing you can select an area of the photo and apply the Curves or Levels through that mask only to the specified pixels, leaving the rest of the photo completely unchanged. Always apply these as an Adjustment Layer (or equivalent) if you can so that you can go back and readjust later. |
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02/12/2005 12:03:39 PM · #9 |
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