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How to Make Selections with Photoshop [2/2]

In the previous post we look at how to make basic selections with manual selection tools like the Rectangular Marquee, and “smart” selection tools like the Magic Wand.

But if you’ve done any work with selections you’ll have discovered that however smart the tools are, they don’t always work as expected. When I first used Photoshop I was sorely disappointed that the Magic Wand often didn’t make the selection I wanted. Why didn’t it understand what I wanted and just make the selection?

The game changer for me was learning that you can combine selections. The first selection, it turns out, is just the start. You can add selections together, subtract them from each other – and you can do it with any combination of Photoshop's selection tools. 

You’ll learn this great technique in the video below.

How to Make Selections with Photoshop [1/2]

At its most basic, making a selection in Photoshop is simply about choosing the best tool. So if what you’re trying to select is square or rectangular, use the Rectangular Marquee Tool. If it’s non-rectangular but has still got straight edges, use the Polygonal Lasoo Tool instead.

Watch the video below to see how simple it is to make a dramatic change to a photo, simply using these selection tools.

Some of Photoshop’s selection tools require you to do all of the work, and some of them try and assist you. The two main tools in this category are the Magic Wand and the Quick Selection Tool. Both of these work well when there is obvious contrast between what you want to select and what you don’t. They both work in similar ways – in the video below you’ll see the strengths of each tool and the sort of images they can help with. 

Next week we'll look at how to create more difficult selections by combining them...

.indd? .psd? .ai? .eps? .jpg? Which file types are used for which purpose?


If you're new to design, or simply have been given some files to work with, which ones are used for which purpose? Here follows a very brief post attempting to simplify a very large subject.

Files with an .indd suffix are created in InDesign, which is the program most widely used to create documents that will be printed, such as magazines, newspapers, brochures and newsletters. It's this file that you'd open in InDesign if you wanted to change any aspect of the file that you've been sent.

Images that are placed within the InDesign file usually come from two different sources. Some are most likely photographs, usually created in Photoshop, and will very often be .jpg files. Other file types created from Photoshop include the .tiff file and the .psd.

What all of these file types have in common is that they are images made out of pixels (also called bitmap or raster images, because they've been rasterised: converted into pixels). What separates them are their different attributes. Jpgs are very effective at compressing images in the same way that mp3 files compress audio files to make them smaller. Tiffs compress in a less effective way, but do so without throwing away any information from the image, so are often regarded as being of higher quality (which is not necessarily true). PSD files are Photoshop's native file format and enable you to use some of Photoshop's very flexible features (like Layer Masks, Smart Objects, Smart Filters). Other bitmap file formats that are primarily used for web graphics (as well as jpgs) are the .gif and the .png file format. Mostly you wouldn't need to open bitmap images, but would do so in Photoshop if you wanted to change the images (for example to make it black and white, or adjust its colours).

The other source for images that are placed within Indesign is Illustrator, which creates images not make out of pixels, but mathematically determined points called vectors. These files are much simpler than bitmap images and are perfect for things like logos, diagrams and maps. The files created from Illustrator are usually .ai files and .eps files. Again, you normally shouldn't need to open these, but you would do so in Illustrator if you wanted to adjust the colours in a logo or change the text on a diagram.

The other file type you'll have come across is the pdf, which can be created by a variety of programs for a variety of reasons. The most likely reason you'd encounter one in a design context is that it is either sent as a proof (so you can see how the job will print out) or that it's created as the final document for a printer to print from.