Page 159 - (DK) Advanced Photography Guide
P. 159

IM AGE ENH A N CEMEN T      157


       Adjustments
       There are far more postproduction adjustment    when shooting—should only need a little tweaking,
       options than can be covered in this book. However,   using just a few adjustment tools. The most useful of
       most photos—as long as you made the right choices  these are shown below.


        ADJUSTMENT                                               BEFORE             AFTER

       ROTATE AND CROP
       There are two reasons to crop a photo: to remove unwanted details
       around the edges, or to change the aspect ratio so that you can improve
       the composition. You can rotate a photo dramatically to change its
       orientation, or apply it more subtly to straighten out key elements.
       EXPOSURE
       The Exposure adjustment enables you to correct any errors in exposure
       and to adjust the photo’s brightness to your taste. You can also use it to
       create a high- or low-key photo (see p.72). Lightening a photo can,
       however, increase the visibility of noise, particularly in areas of shadow.

       WHITE BALANCE
       The color temperature of a JPEG can only be adjusted crudely, to warm
       it or cool it down. With Raw, you can select any preset or specific Kelvin
       value without losing quality. You can also use the White Balance color
       picker to take a White Balance “reading” from a neutral area of the photo.

       CONTRAST
       Decreasing the contrast in a photo pushes all of the tones closer to a
       mid-gray, making the shot appear flatter and duller. Increasing the contrast
       pushes tones further apart, making the shadows darker and the highlights
       brighter, and the colors appear more saturated.

       SHARPENING
       This option helps to emphasize details and reveal texture. How much you
       apply sharpening varies according to how the image is to be used. Input
       sharpening, applied after import, is normally moderate; output sharpening,
       when you are preparing a photo for printing, is usually more extensive.





       ADJUST                           EXPORT                           PRINT
       Make any alterations to your photos.    Export Raw photos to a more useful   Creating prints is the ultimate way
       If you shot a sequence in the same   type of file, such as JPEG. At this   to view photos, as prints have a
       conditions, adjust one photo to your   stage, you can change settings such   tactile quality that screen images
       liking and then apply the same settings   as resolution. Photos for screen use   lack. Printing involves making
       to the others. This saves time, even if   can be lower in resolution than   aesthetic choices and can be just
       the photos need fine-tuning.     those that you want to print.    as creative as shooting photos.








   US_156-157_Intro_Image_Enhancement.indd   157                                                     05/02/2018   14:36
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