Just a quick note in reply. While I have the S1IS and not the S5, I do have the Canon Wide Angle adapter lense and am very happy with it. I have taken it overseas to Europe and it has given me very good results. My only complaint is that you cannot add any type of filters of any kind to them or even a lense hood. Having said that, you CAN add filters if you only use the extension tube that is required that you screw the wide angle lense into so you CAN use the UV,Polarize, etc. etc lense but you are only using the cameras original lense at that point. This adapter also doubles as a lense hood too. Now, maybe Canon has upgraded some of these things in the last few years, one would hope so, but as far as the wide angle lense goes, I am very happy with it and think the money is worth the added benefits. Just my 2 cents.