Summary: I've only had the lens for a month and it seems to be working out great. I'm no expert and usually have my camera set to "Auto" and the picture quality with this lens seems to be very good. I'm anxious to use it on my upcoming trip to Australia. However, as mentioned in other reviews, the lens does create a shadow when using the camera's flash. I would recommend this as a worthwhile addition to the S1/S2/S3/S5 IS Digital Camera.
Summary: The other reviews are spot-on: It is well constructed. There is a little blur at high magnification. There is some distortion at the edges. You can't use it with the on-board flash because it blocks a portion of the light. I am getting more and more into digital photography and I will eventually have to upgrade to a more professional DSLR camera, but this lens has added a feature to my Canon S5 IS that it was lacking and for that it is well worth the price.
Summary: As the Canon Powershot S5IS camera has 36mm at the extreme wide angle, it helps to attach the WC-DC58A Wide Angle Converter Lense for covering more horizontal and vertical view of any given scene, as it gives 27mm at the extreme wide angle. I have found it satifactorily suitable when there is no sufficient space for taking a step back ( without the WC, as one of the reviewer has suggested ). The pictures are sharp and detailed.
Summary: I purchased this for my S3 IS. Gives you that extra little bit. I can't say enough about Canon's optics, the picture quality is excellent. I bought this lens and the teleconverter lens from Amazon for half the price I was quoted from a brick and mortar shop.
Summary: This lens is what can be expected from Canon.....a great quality product but, with the brand name comes the price as well. My only issue is with the fact that with the addition of this lens the regular flash leaves a shadow and is basically useless. So, a side mounted flash is a good addition to this lens.
Summary: I bought this on impulse before leaving for a trip to the National Museum of the U.S. Air Force in Dayton, Ohio. I had buyer's remorse immediately after ordering all the way to the point of entering museum, at which point I nearly broke my arm patting myself on the back for my wise decision. It's just a wide-angle converter, providing 0.75x magnification, meaning the equivalent of a 28mm lens on the low end of a Canon S5 instead of the normal 35mm.
Summary: I bought a less expensive adapter a while back and found it to by unsatisfactory. The Canon one fits perfectly, has no apparent vignetting and works seamlessly with an S3-IS. Do not waste money trying to find something cheaper.