Quick Start

Nero PhotoSnap Nero PhotoSnap • 26
If you would like to set other brightness limits, click with the mouse on a fringe
region and shift the enclosed color area.
4. Click on the 'Apply' button once you are satisfied with the results of the
correction.
The tool menu will then be closed. On the 'Current' tab you will then see the
altered image, while you will be able to see the stored image on the 'Saved'
tab.
In addition to (or instead of) a histogram correction, you can also alter the
gradation curves.
The gradation curve determines which input brightness value is to be
represented by which output brightness value during the filtering process. On the
X-axis however, the darkest pixels are on the left and the brightest on the right.
The Y-axis displays the darkest pixels at the bottom and the brightest at the top.
A
straight line on the diagonals does not have any effect. A curve bending
upwards makes the picture brighter – if the curve bend downwards, the
photograph will become darker. Special effects can be achieved by deliberately
changing the shape of the curve. Particular areas can be made brighter, fo
r
instance. To do this, bend the desired brightness area up or down. Control points
can be set out, to avoid changes in those brightness ranges that are not to be
altered. Normally, significantly deformed curves have an unattractive effect on
the picture and should be avoided. However, gentle manipulation of the gradation
curve can be very useful.
To do this, click on 'Gradation Curves' and shift the curve in the directions
desired.
5. Click on the
icon if you would like to save the result and overwrite the
original image.
If you would like to retain the original image, click on the
icon next to the
'Save' icon and add a file name. You can also change the type of file if you
would like to save the image in another file format. Click on the 'Save' button
to store the image and to close the dialog.