Hi, I wish I had come across this site before buying a tele-converter for my Canon. Oh well. I have bought a Tokina 3x tele-converter for my Canon S2 IS. I chose this tele-converter over the one made by Canon for this camera for reasons of price and greater zoom (3x vs. 1.5x). Unfortunately, the minute I put the tele-converter on, the image quality just goes down the drain. Here is a sample of what I mean. I took these two pictures at the same time of the same subject: the moon. Without the tele-converter and at full 12x optical zoom, the image looks somewhat sharp and here is what I get with the tele-converter on, and with full optical zoom (nothing but garbage): Both times I used manual exposure and appeture settings. Am I doing something wrong or does this lens just suck ? Is there any type of filter (or camera settings) that I can use to correct this ? Also, if there is no hope in getting usable images out of this lens, could someone please tell me if the Canon 1.5 tele-converter (or any other one for that matter for the S2 IS) would give good image quality. I am seriously considering this option. By the way, here is the Tokina tele-converter that I am having trouble with Appreciate your input. Cheers.