Photoshop Selections: The Magic Wand Tool
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Photoshop Selections: The Magic Wand Tool

The Magic Wand Tool

The Tolerance option tells Photoshop how different in tone and color a pixel can be from the area we clicked on for it to be included in the selection. By default, the Tolerance value is set to 32, which means that Photoshop will select any pixels that are the same color as the area we clicked on, plus any pixels that are up to 32 shades darker or 32 shades brighter. In the case of my gradient, which contains a total of 256 brightness levels between (and including) pure black and pure white, Photoshop selected the entire range of pixels that fell between 32 shades darker and 32 shades brighter than the shade of gray I initially clicked on.

HDR Tutorial Guide Thing for Photomatix
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HDR Tutorial Guide Thing for Photomatix

The problem: Dynamic Range

If you go to the beach at sunset and see a brilliant sunset what do you see? You clearly see the detail in the sand, in the sky and can enjoy the sunset. You’ll have no problems spotting friends or finding your car. You’ll never hearing someone ranting that there’s too many silhouettes and that its hard to see. However, if you try and take a photo on your camera it will fill the scene with silhouettes. Depending on the metering mode of your camera, it will probably meter for the brightest object in the scene, the sun. Everything else will be under-exposed. The majority of people will be happy with this because it darkens the clouds and creates an aesthetically pleasing scene. The problem is that you aren’t capturing the scene as you remember it. You are capturing it as aesthetically pleasing as possible with the limitations of your cameras dynamic range. This means that you lose an incredible amount of detail in the shadows. This is why you get silhouettes. The shadows / blacks are massively clipped. You can work around this with a ND graduated filter but they are a block that you cannot alter. For a sunset at a beach it maybe fine, but for a cityscape you will find its too harsh resulting in dark patches on the tops of buildings. Basically you can get a nice photo, but its not as you remember it.

Photoshop Lesson 2 (Crop)
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Photoshop Lesson 2 (Crop)

Let’s crop Captain Cat to create a better image. For now forget that the horizon line isn’t quite straight. We’ll simply crop out the bad or distracting parts of the original image and leave in the desirable parts. After you crop it, if you want to see how I cropped it, click: Ray’s Captain Cat Crop.

I am now going to direct you to using some of the photoshop TOOLS. The tool bar is on the left by default. So that you know what tool I’m talking about, click on : Photoshop Tool Bar and you will get a new window. Make this window smaller so that you can see it while you read this present window and leave it there for future reference.

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