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How to Create an Action Sports Sequence in Photoshop
November 2007


This article shows you how to make a simple action sequence in Photoshop. Others may have slightly different methods or techniques, but this is generally how I like to create them.

So the first thing you need to begin is a series of photos. Now ideally these photos should be taken with a consistent background to make the job of removing your subject a lot easier. Sometimes (like in this case) it's not possible to shoot off a tripod or while standing still. Just keep in mind, the more the camera moves, the more difficult your job becomes putting the photos back together later as a single image.


Step 1 – Lay Out Your Photos


What I like to do first is figure out the size of my photos (image-->image size) - there's usually a standard size for your camera. After importing all my photos in the sequence I'll paste them into a single document that's a bit larger than the size of the photos. In this case there are four photos at 3072 x 2048 pixels each. I've created a new canvas that's about 4500 x 3000 - this lets you put each photo on a separate layer without cropping the edges off. More importantly it gives you some room to maneuver the pictures a bit since they won’t line up perfectly when they are first overlaid.


Photos are on a single canvas, each on its own layer.



Step 2 – Line Those Suckers Up!


The next step is to line up your backgrounds so that they all sit approximately on top of each other. I like to try and pick a distinct point as a reference. The photos won’t always line up perfectly because of the motion and various angles the photos may have been taken at, but you can usually get it pretty close.
Working with two layers visible at a time, adjust the opacity of the top layer to around 50% and line up all the photos as closely as you can. You can see below that initially the backgrounds don't quite match.


I’ll use the boat wake and the tree line in this case as reference points to match the images.



Step 3 - The "Whole Picture"

With a sequence like this, you only need the background to span the area of the photo you're going to use at the end when it's cropped. Overlapping and matching four or more separate images perfectly is a waste of time and just not necessary. In this image I'm only using the top and bottom layers for the background.

The example below I've lined up the house in the background since it has sharp edges and details. Those distinct features make it pretty obvious when it's been matched up perfectly. You'll notice that while the house is lined up nicely, the trees on the far left of the top layer don't line up at all. What you do to remedy this without much work is simply cut the top photo in half at points that don't need to be matched so precisely and can be blended more easily. Good candidates here would be the sky and water.


The background matches in the middle, but the trees on the left are now way off!


Almost always after you cut your background you’ll notice that the photos still don’t blend very well because of the different lighting in each shot. Not to worry! Use the image adjustment options such as levels, brightness/contrast, colour balance, etc. Play with the values of these tools on one of the layers to get it to match the colour and contrast of the other. Once you're happy and everything looks blended together like one image, merge the two photos into a single layer (layer --> merge visible).


The colour and contrast of the two photos is noticeably different and needs correction.


You will most likely have to stitch and blend some areas together still where the photos meet.
The cloning tool will generally work best for this. Tip: If you're cloning near sharp edges, use the polygon lasso tool and clone inside your selection area to avoid smudging other sharper details.
Once you're done you should have a seamless image of the first and last photos in the sequence.


The background and colours have now been matched.



Step 4 - Tracing The Subject

Now to add in the last two shots of the sequence. Check to make sure that your second photo is lined up with your new background layer. I've set the second layer opacity to 50% and I’m using the trees again as a positioning guideline.


Line up the backgrounds as close as possible.

After they are lined up, set the top layer back to 100% opacity and zoom in on your subject. Next you’ll use the selection tools to trace an outline of the area you want to keep. You can use the magnetic selection to get a rough outline, and then refine your selection using the polygon lasso tool for precision.
Tip: When tracing your outline, zoom in closer and hold down the spacebar while clicking and dragging the left mouse button to pan around the image.


Trace the outline of your subject.


After selecting the area I want, I'll select the inverse (Select --> Inverse) and also feather my selection a couple pixels (Select --> Feather). Then you can delete the inverse of your original selection, which should be everything but your subject. You should end up with something like the photo below. Repeat this process for any other photos left in the sequence.


The background has been deleted from the second photo, leaving only the subject in the frame.



Step 5 - The Finishing Touches

The next step will be to first flatten the image (Layer --> Flatten Image) and adjust the horizon so it’s level. Then you can crop the image to remove the surrounding whitespace and rough borders.


Use your selection tool and crop the area of the photo you want to keep.


When you’re done you can make small colour corrections and adjustments to the entire image at once. Here is the finished result.




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copyright - mdgraphics web design toronto - 2007