Currently, our Home Page slideshow images look best when all have a 16:9 aspect ratio.
Some of us like to use digital frames to present our images. But, if you take a 16:9 aspect ratio image and add a digital frame to it, the aspect ratio is altered.
So...how do you create a digitally framed image that ends up having 16:9 aspect ratio?
Well, if you want an even width frame around your image, the trick is to start with an image that's NOT 16:9 ratio, and frame it so that it ends up
If you want the flexibility of changing your frame colours after the fact, duplicate the Background image between each of the steps 1-3 and lock the pixels (with the layer property). That way you can flood each layer with a different colour, or gradient, later, without flooding the entire canvas area.
If you want a different width pinline, vary the relative canvas increases in steps 2 & 3. Ensure that your changes don't end up making the final
image wider than 750 pixels.
Better still...make a Photoshop action that uses a preselected foreground and background colour for the canvas growth.
That is, choose your FG & BG colours, then run your action that refers to FG and BG colours.
That's what I do. Too easy.