![an-introduction-to-adobe-photoshop[1]](https://img.yumpu.com/29240060/27/500x640/an-introduction-to-adobe-photoshop1.jpg)
an-introduction-to-adobe-photoshop[1]
an-introduction-to-adobe-photoshop[1]
an-introduction-to-adobe-photoshop[1]
Create successful ePaper yourself
Turn your PDF publications into a flip-book with our unique Google optimized e-Paper software.
An Introduction <strong>to</strong> Adobe Pho<strong>to</strong>shop<br />
Simple Global Adjustments<br />
Levels<br />
Levels is <strong>an</strong> extremely powerful <strong>to</strong>ol for adjusting exposure problems <strong>an</strong>d c<strong>an</strong> also be used <strong>to</strong> colour correct <strong>an</strong> image.<br />
Fig 4.4 the Levels Adjustment<br />
When you apply a Levels correction you will notice that there is a his<strong>to</strong>gram, this is a representation of all of the <strong>to</strong>nal<br />
values in the image. The black point slider on the left is set at 0 which is pure black <strong>an</strong>d the white point slider on the right<br />
is set at 255 which is pure white. This gives us a complete r<strong>an</strong>ge of 256 possible values.<br />
The middle Gamma slider works differently <strong>to</strong> the black <strong>an</strong>d white sliders. If the Gamma is adjusted <strong>to</strong> the left (<strong>to</strong>wards<br />
the black end of the scale) the image will get lighter in the mid <strong>to</strong>nes <strong>an</strong>d the opposite will happen if you move it <strong>to</strong> the<br />
right, the image will get darker in the mid <strong>to</strong>nes.<br />
27<br />
Download free ebooks at bookboon.com
Change language