I have a Canon Powershot S3IS and I recently purchased a 2x telephoto lens. When I use the telephoto lens and try to extend the distance as far as it will go, the camera shuts off and says lens error please restart camera. Do you have any idea why it is doing this?

Hello

Unfortunately a "lens error" message is not something that you will be able to fix. This error indicates a system failure and requires the camera to be sent in for servicing and repair.

It is an inexpensive lens. It's actually a 650-1300mm lens with a 2x tele-extender to take it out to 2600mm. It's slow, manual focus, without any form of image stabilization, and with no electronics so setting the exposure is also manual. It won't be as sharp as a Canon 600mm lens, for example, but it is a lot cheaper. Also bear in mind that the 2x tele-extender will cost an additional 2 stops of exposure, so with it attached the the already slow lens becomes a very slow lens, giving a very dark view through the viewfinder.

Yes...the Canon brand is made to work properly with the camera.

None of these Canon Powershot cameras have a lens which will remove.
The ring is only for a special kind of add on lens for either wide angle or telephoto, which will only fit this camera or possibly a few other models.

Never try to unscrew the lens, you will ruin the lens permanently.

The SX1 has an amazing 20X optical zoom. The teleconverter will allow to get pictures if the camera zoom is not fully on 20X. It means that you can't get a full 40X zoom images, but a 30X maybe. I don't why canon has this problem.

Canon currently makes super Telephoto lenses from 300mm to 800mm and a number of zoom Telephoto lenses from 28-300 to 100-400. You can also special order a 1200mm lens from Canon at a cost of $99k! (There are only about 20 such lenses made so far.)

You can also get a 1.4 or 2x teleconverter to further increase the power of a telephoto lens. However, the cameras are unable to auto-focus when the minimum f-stop exceeds f/8, which can happen when you use one (or both) of the teleconverters on these longer lenses, so you have to manually focus the lens.

You can also get telephoto lenses from other manufacturers such as Tamron and Sigma that are built to work with Canon cameras. However, the Canon lenses are generally regarded as the best quality.

Believe it to be a camera fault. Reason: zoom feature makes the lens extend for telephoto work, therefore, the autofocus feature should be working at any distance you set the lens for and your shots should be clear. Could be an autofocus problem or the lens and CCD are misaligned at the telephoto position. Have the camera checked by a qualified repairperson. Get an estimate first. You may want to ask this question at the Canon website also.  

The lens is jammed meaning you are going to have to open it yourself you should onlyhave todo that once and itshould work again

Hope This Helps - Josh

Hi, the adoptor tube are not compatible to the camera try to consult nearest lense seller they can recommend the exact adoptor lenses to your camera.