If you have a Canon Powershot SX10 IS camera then you must have realized you can't attach any filters to this camera since it has no filter mounts. Some try to force 52mm filters but its not very healthy for your camera. So the best option is having a 58mm Filter Adapter. Till now there was only one solution for that. That was Lensmate 58mm Filter Adapter which they have sold only through their site. Finally some other company has stepped in and has introduced another 58mm Filter Adapter to market. That is Janco 58mm Filter Adapter which you can simply buy from Amazon.com and its cheaper than Lensmate 58mm Filter Adapter too.
Janco 58mm Filter Adapter perfectly fits with all 3 cameras of this range. Canon Powershot sx10 IS, Canon Powershot SX1 IS and New Camera, Canon Powershop SX20 IS. If you have one of these cameras then you really need this 58mm Filter Adapter / Step-up ring. It let you use all 50mm filters as well as Macro conversion lenses such as Raynox DCR-250 Super Macro Conversion Lens. But of cause You can use the Raynox Maxro lens even without the 50mm Filter Adapter since its a snap-on type Lens.
There are bunch of accessories which you can use with this camera.
Canon SX10 IS Camera accessory List