Photoshop Tutorials - The Basics of Tonal Correction
The Basics of Tonal Correction
Images can be captured in different ways - by scanning, digital camera shooting, video capture, etc. The images often have defects - they can be too dark or too bright, have low contrast or have indistinguishable details, etc. The difference between good and bad photo is in correct balance of color, light and shadows. When the balance is correct, the objects in the photo look vivid and striking.
Every photo has the area (group of objects in it) that re the most important for the subject. This area often contains a rich set of image details. It should have the highest tone contrast. Drawbacks of light and contrast in the photo are called tone drawbacks, and the process of their correction is called tonal correction. Photoshop provides opportunities for precise tonal correction. If you see the tone defect in image details then most likely, it is peculiar for the whole image.
Therefore, you should start with overall correction. Only when you have achieved the best tone relation for the overall image you can start correcting parts of the image. Parts of the image should be corrected only if the lighting of the shoot was incorrect, or if the image was incorrectly developed or scanned.