Design Practice: Photoshop Workshop

When working in photoshop you are working with bitmap graphics. Each image is made from pixels, the number of pixels defines the resolution/ the quality. This is usually measured in pixels per inch , dpi.

The most important things about photoshop are:

You must already know your output as images become pixelated (bad quality) when they are enlarged.
You must also have the right pixels set e.g. 72 or 300
You must set the colour mode to the correct setting i.e. CYMK or RGB

RGB screen, web, ect, 72 dpi
The colour is made out of light; red, green and blue

A photograph is also RGB as a photograph captures light.

CMYK print paper, ect, 300 dpi
The colour is made out of ink or toner; cyan, magenta, yellow and black (key)

A lot of colours in RGB mode can't be reproduced in CMYK, but they can from CMYK to RGB, this is because light can make more colours than ink/ toner.

Working in a non destructive way :

How to tell what colour mode the image is ...

The colours in this image can't be reproduced by a printer. So you need to consider this.

Destructive

CMYK mode

Non-destructive

Check proof colours

uncheck proof colours to go back to RGB, you can have it with proof but it will go back to RGB

Gamut is the colour range

out of gamut, out the colour range you are using

gamut warning highlights the colours out of gamut range

this is CYMK gamut warning

add an adjustment layer as this is non destructive,

to get rid of the grey which is the area wont print, you could try uding levels tool in the adjustment layer

Or the brightness and contrast, however you can see its not working

Or you can completely change the colour by using the hue and saturation, you can see that there are now no grey areas so all colours are in gamut.

Layer mask all white this means everything is being masked,

to add in the windows
set foreground colour to black

work with a soft edged brush, so you don't have a harsh edge.
[ ] decrease and increase the size of the brush,
the layers mask now have the shape where you have removed the layers mask

Finished image

In some photographs it is best to leave the subject matter in shadow rather than the sky as all the details are still there and you can add the highlights, but you can't do this with the sky.
Using the quick selection tool you can select the statue

Then on a new adjustment layer only the statue will be selected, then you can edit the levels and add in the highlights/mid-tones. As you can see the statue is there now.

You can see on the layers mask layer only the statue are is selected, this is shown in white.

Panorama

6/12/2012

This loads all the images onto one document instead of all seperate documents.

Select one image in the folder and Command A to select all the images in the folder.

Smart object, combines all the images into one layer, double click on it to open up all the layers.

This gets rid of all the moving images in all the images and so this just leaves the static buildings and erases the people.
Photos were set to be taken every 30 or so seconds, and it was on a tripod.

however you can see there are some shadows of people underneath the Bean and the sky has blurred.

so to do this select an image where you like the sky, open it as a seperate document in Photoshop. Then select all the image Command A , then copy it Command C then go to the original image and paste it Command V. Then using the quick selection tool select all the sky then go to select inverse and then edit cut, this will delete all the buildings leaving the sky.