Barbara I'm not sure of your Powershot's size so I can't answer your question. I'm a real estate appraiser so I use my camera(s) on a daily basis. I've gone back to my old tattered TEK case for the time being. This pro-logic case is awkward and difficult to open with the top zipper design. It just isn't worth the hassle any longer. I'm searching out a new case.
Barbara: My Nikon fits snug in the main pocket not much room for extras. It has several other pockets that I put the charger, extra battry, and extra memory, so I will allow me to carry most odf what I need to carry. The Canon listed on Amazon recommends the same Case Logic DCB-304 Case. Hope this helps you. Bill