Friday, January 9, 2009

Workflow Tip #1

Here's a quick tip that make a big difference when working in Photoshop: Name Your Layers.

Ok, this sounds really simple, but it also really can make a BIG difference as you work. Ever since Photoshop added Layers it's gotten harder and harder to keep track of what you're doing and even more so what you've done.

What I'm talking about here is situations where you look at your layers palette and see lots of layers named "Layer 1", "Layer 2" etc, etc. When you have to make some adjustment how can you know what "Layer 37" is for and what it does? This gets to be even more important if you're working on a composited image that has bits and pieces from more than one image being combined into a single image.

Simply naming the layers in some way that tells you what the layer is for can help you immensely as you work your way through the project.

When I'm working on an image one of the first things I do is make sure the background layer is named the same thing as the original file. For instance if the file I'm is named "Katie_img_002" I will make that the background layer's name.

This is really easy to do to, all it takes is 3 or 4 steps. (Since I use a Mac I'm gonna give you the Mac shortcuts here - if you're on a PC you'll just have to translate.)

Step 1) Bring up the "Save As" dialogue, (Command + Shift + S).

Step 2) Copy the file's name, (Command + C).

Step 3) Close the dialogue without saving, (Esc).

Step 4) Double-Click on the layer's name in the Layers palette and Paste the copied file name.

With this done no matter what you call the file from now on you'll always know where you started. And if you're copying this layer to another image the file's name is copied with the layer so you'll always know where that piece came from.

Taking the layer naming idea a little farther I also will name layers according to what any filters I've run. For instance if I run a 6 pixel Gaussian Blur on a layer I'll name the layer something like "GBlur 6". Now if for any reason I need to redo this layer I'll always know what I did and what if any change I need to make.

While it doesn't make a tough job easy, it sure helps me keep track of what I'm doing and that always helps!

Wednesday, January 7, 2009

Dustin' & Bustin'

Dustin’ & Bustin’

Every once in a while we come across an image that seems like it’s been through a dust storm. Lots and lots of little specks that all need to be eliminated, one by one by one by… well you get the idea.

Here’s a section of an image that suffers from this very problem. Notice all the whitish specks that cover the face of this watch?




While we can wonder how they got there the question we’re concerned with here is how do we get rid of them?

The first thought that may come to mind is to use Photoshop’s Rubber Stamp tool, also known as the cloning tool. This could work, but keep in mind that this means having to carefully work around all the gradations etc we can see on the face of the watch.

Maybe the Heal Brush could work well here. While I really like the Heal Brush for a lot of tasks, (it can be really great with skin), there are a few things you have to watch out for with it. With an image that has as many spots as this one there can be a little delay each time you click with the brush. It’s not uncommon to get ahead of the tool and have to wait for Photoshop to catch up to our work so we can see how effectively we’ve dealt with the problem. If you’re working with a good sized file, like a couple of hundred Megs, that could be a lot of waiting, and waiting.

In cases like this I’ll go back to an old tried and true technique to make this job as simple and quick as possible: the Dust & Scratches filter.

Found under Photoshop’s Filter>Noise menu the Dust & Scratches filter is basically a variation on the Blur filter. From this screen grab you can see that the filter’s dialogue has settings for both the Radius and the Threshold.




The challenge is to find the balance between the Amount of Blur being applied with the Radius and protecting the smaller details with the Threshold setting. While that can sound a little tricky the way this is used in practice is to find a setting that knocks out most of the dust without blurring out too many little details, (on a duplicate layer of course).

Then the trick is to use a Layer Mask filled with Black to mask out the filtered duplicated layer. Now all you have to do is using the Brush tool paint white in the layer mask wherever you see those nasty little spots and magically they disappear. (Ok not so magically, but it’s more fun to put it that way, eh?)

Since the Brush tool works more quickly than the Heal Brush and the combination of the filter and the layer mask is simpler to use than the Rubber Stamp tool this can be a pretty quick way to knock down the majority of those troublesome spots.

There are a few things to watch out for when using this tool to bust those specks. In this side by side enlargement here you can easily see the small type has been blurred, but what can be just as problematic and more difficult to see are the borders around some of the larger specks.





When viewed closely these borders can be objectionable artifacts that should be avoided. This means that the Dust & Scratches filter usually won’t do the job alone, when you see some artifact like these borders use the Heal Brush or the Rubber Stamp tool instead.

So while it’s definitely not a cure-all solution the Dust & Scratches filter is certainly a very useful one.