Steve S said:Thanks Cliff, but yesterday, a guy on DPR Retouching told me I could just layer one pic over the other,
starting with the 1st, then erasing away the top most layer where the truck's position was underneath.
Clivegriff said:Hi Steve
Without knowing your level of confidence and/or experience with PS it's difficult to know where to start and where to pitch the tutorial.
However, here's a basic overview: if it's enough, fine; if not, get back with any specific problems...
The project starts when you shoot the sequence of shots. Try to include something that will be a constant in each shot. Focus, lock focus and exposure, recompose and wait for the moment to start your burst.
OK, assuming that's done and the shots are transferred to your hard drive...
Open the first two in PS. Make sure you're working on the second shot. Crop a right-hand portion of the second shot along the length side only. Ctrl-A to select it all, Ctrl-C to copy it to the clipboard. Close the second shot as you won't need it again.
Working on the first shot, press Ctrl-V to paste the cropped second shot on top of the first shot. It will automatically create a new layer. Reduce the opacity so that you can see which is shot 1 and which is shot 2.
Use the move tool to position the new layer so that it overlays exactly where you want it to. This is where the constant item becomes invaluable.
Make sure the top layer is highlighted and create a layer mask. (It's the circle inside a square icon on the layer palette.) Hit Shift-D to ensure that you have the fore and background set to black and white. A black brush will reveal the lower layer and a white one will hide it. Use a combination to hide / reveal parts of the top and second layer. Change the opacity so you can see exactly where you are.
Repeat this sequence adding shots 3, 4, 5 etc.
Here are a couple of examples of what I think you're trying to achieve...
[In each case the ball was a constant and was used to position each overlying shot.
I've never tried to write a tutorial before, so don't hesitate to query anything I might have taken for granted or omitted.
PhotoDawg said:This is the first time doing this so be easy on me.