This document discusses various techniques in Photoshop for improving photos, including removing sensor dust using the clone stamp tool, cropping images, straightening images while removing white lines with the clone stamp tool, adjusting shadows and highlights with the Shadow/Highlight tool, and editing hue and color balance.

1. 6
PHOTOSHOP

2. WEEK 6 – SENSOR DUST
This week we looked at a variety of tricks and
techniques to use in Photoshop to improve our
photos. Here is what we learnt.
When changing a lens, you have to be extremely
careful in order to prevent sensor dust. Some ways
to prevent this include not changing your lens in a
dusty area and keeping lens caps on when not
using the lens. More recent cameras even have a
sensor cleaning routine for every time you turn it on
and off. However dust can easily settle on the
sensor leaving dust marks on every image you
take. Luckily there is a simple technique on
Photoshop to get rid of sensor dust in your
pictures, as shown on the next slide.

3. WEEK 6 – SENSOR DUST
(SCREENSHOTS ON NEXT SLIDE)
Here we were using the clone stamp tool (in the
purple circle). In the first picture you can see sensor
dust in the black circle. We use the clone stamp
tool while to get rid of this. First you select the area
that you want to ‘copy’, in this case the blank blue
sky. You then hold down the alt key, while your
mouse is over the image you are copying, then
release the alt key and it will ‘copy the image’.
Finally, you click where you would like to paste the
image (over the sensor dust), and the job is done.
After I had got rid of the sensor dust, I decided to
practice my skill further, and add another
aeroplane, as shown in the white circle.

4. WEEK 6 – SENSOR DUST

5. WEEK 6 - CROPPING
Here we learnt how to crop an image. Once in
Photoshop, select the image you want to crop.
When ready, simply press ‘f’ to enlarge the
image, then press ‘c’ and finally click and drag
where you would like to crop the image. Press enter
to finish editing. This skill is useful for focussing on
the main object of
the photograph.

6. WEEK 6 - STRAIGHTENING
Here we needed to crop and
straighten the image. You
crop it the same way as
before, but before pressing
enter, you move your mouse
mouse to the side of the image and a
rotation symbol should appear. You
then simply move the mouse until the
image is straightened. However you
will most likely be left with white lines
at the side. To remove these, use the
clone stamp tool.

7. WEEK 6 – SHADOW/HIGHLIGHT
Here we had a photo where the tree was too dark.
The Shadow/Highlight tool can darken highlights
and lighten shadows. In this case, we are using the
latter. You simply go into image, adjustments and
then Shadows/Highlights. Then edit the photo to
your satisfaction. However be careful not to overdo
it or the photographs will look artificial.

8. WEEK 6 – COLOUR EDITING
 To change the hue in your image, go to
image, adjustments, Hue/Saturation, or
type ctrl u. Pull down on the menu to
adjust the colours, and drag the slider to edit them.
If you want to do a smaller area, use the marquee
tool, to select that area, then do the same thing
again. In the top right is an example of an image
that has had the hue adjusted five times.
 To change the amount of a certain colour in the
highlights, mid tones or shadows of an image, go to
image, adjustments, Colour Balance, or type ctrl b.
From here you can change the amount of various
colours such as red and green.