Customer Reviews
Use the hood !! 
2008-08-17
For those complaining about not being able to use the tele-converter with a filter, note that the hood included with the adapter is threaded for 58mm filters. The hood does not stay secure over the lens, but if you carry a small roll of tape, you can use a couple pieces to secure it.
I have only used this in practice, but came out with some very good, clear results. Like others, I know this is a zoom lens, but wish you could be able to back off the zoom a bit with out getting the tunnel effect. I think it will work out well, though. As to price, it's fair, especially as DSLR lenses run in the thousands, not mere $200.00 and less. Oh, yes, I purchsed this lens from Canon, and the
Amazon price is considerably less.
TeleConverter 
2008-07-24
This takes amazing pictures.
I read one review that said that there is a circle when not zoomed in. This is true, however, this lens is made for reaching out far. So if you put it on and dont want to use the zoom, you are a pinhead. Here is an example of the circle http://outdoors.webshots.com/photo/2445322610046342862IUtNrR?vhost=outdoors
Here is an example of my camera without the lens
http://outdoors.webshots.com/photo/2795425630046342862gKeYmb
This is with it
http://outdoors.webshots.com/photo/2676004980046342862FnHdQd?vhost=outdoors
You can see how much it reaches out.
One warning. You have to get the adapter for this. They run about 24 bucks. I got two, one for my tele and one for wide, so they are easy to switch out
Canon LAH-DC20 Conversion Lens Adapter (LA-DC58E) and Hood (LH-DC40) Set for the S5 IS, S3 IS & S2 IS Digital Camera
Warning! May not be what you expect. 
2008-07-03
I just received the Canon TC-DC58B and put it to the test. I took non-digital zoom shots, at full magnification, with and without the converter and was instantly disappointed. What disappointed me was that the extra magnification I got was a lot less than I expected. There was little difference in the two shots. In fact, I could get the same magnification by minimally employing the digital zoom feature. I am going to Alaska for the first time soon and was hoping the lens would help me get up close and personal with nature. I doubt it will get me much closer at all. I've read through the reveiws and would agree with the quality of the lens, etc. I don't see where those who rated this a 4 or 5 even mentioned the fact that you will not get much closer with this lens. I don't like spending over a $100 for something and being left with the feeling that I did not get much bang for my buck. Beware and think twice about buying this. Don't expect a lot.
Much better that cheaper telephoto lenses 2008-06-23
I purchased this lens for my S2IS. The biggest difference is the drastic reduction in purple fringing that I have seen with a non-canon teleconverter lens (purchased by a friend) for his S2IS. Good quality and good material.
See further 2008-06-09
Very good lens. I use this lens on my Canon S5 it get's the job done plus there is a setting in the camera that recongnizes the lens. Just another canon product doing it's thing. I highly recommend it you can definitely see a difference and since the S5 is known for having some noise in the pictures when using the digital zoom I just turn that off and shoot straight through the converter for flawless pictures.
1.5 is nice 2.0 would be better 2008-06-09
Bring those far away subjects in close. The TC-DC58B converts the focal length of the body lens by a factor of approximately 1.5 (35 mm film equivalent at maximum telephoto: approximately 648 mm) when attached. The TCDC58B Telephoto Lens Converter screws into the front of the S2 IS's existing lens to provide greater magnification (1.5x), for those times when you are shooting distant subjects that you do not want to disturb, such as children, pets, or wildlife.
Not much bang... 2008-05-15
Not much bang for your buck here. You still have to get reasonably close for this little thing to work.
so far, so good. 2008-04-28
I've owned my Canon Powershot S5 IS since October and just recently purchased the tele converter lens and lens adapter (required). I love this lense so far and have been able to take some great shots that appear to be crisp and without blur. I had read other reviews that said the edges of the pictures were blurry, I have not had this problem. The only reason I gave it 4 stars is because you have to zoom out a bit in order to get rid of the "tunnel" the lens creates when you are taking pics. This is kind of a cool way to frame the picture, but not always ideal for every situation.
Excellent Canon lens! But, don't be fooled by DIGITAL INNOVATIONS 2008-04-09
Canon TC-DC58B Tele Converter Lens for S5 IS, S3 IS & S2 IS Digital Camera
This lens are excellent!. I have taken excellent pictures of blue birds using my Canon S5 attached to TC-DC58B converter lens (see the pictures attached).However, I would like to alert all the photography lovers against the Digital Concepts 3X Telephoto lenses selled by Digital Innovations ([[...]]), since I was completely fooled by them and I could not take a single good picture on focus using their lens (see the bad pictures attached). Further, they sent me a product different from the one advertised, and when i tried to contact the customer service, they disrespected me instead of trying to solve the problem. So, don't be fooled by Digtial Innovations like me! If you want good camera and photo products buy from a respected seller as Amazon.
It is just OK 
2008-03-28
This lens did not provide as much enlargement as I was hoping for. For as big as the lens is and the process to change the lens, I was hoping to get more out of it. I still use it, but sometimes it just isn't worth the bother. I think I would have passed on this purchase if I had tested it out before and just saved the money for another camera.
