If you have bought Canon SX50 Camera or going to buy one then one of the main accessories you need is 67mm Filter Adapter. Without this you can mount filters to your Canon Powershot SX50 HS Camera just like its older models like SX40, SX30 etc. You need filters because these can come handy time to time. You need to keep UV filter mounted on your camera as protector filter to keep your camera lens safe. Most important part of Canon SX30 Camera is the lens. If it get scratched or cracked then it gonna cost your more than half of camera price to get it repaired by sending to a Canon factory. Better buying a new camera. But a $10 filter can save all this money so why not just use it. Any kind of damage probably will be absorbed by the UV filter so all you will have to do is replace it. $10 filter is pretty cheaper to replace than $400 camera.
To mount a 67mm UV filter you need to have a 67mm filter adapter. You can't mount filters directly to lens barrel in Canon SX50 any other cameras in this bridge series. Canon has it's own 67mm Filter Adapter for this camera and it cost you around $20. And UV filter will cost you another $10 at least. If you are going to use 67mm filter adapter then you will need a 67mm Lens Cap and 67mm Lens Hood ( you can skip the lens hood since it wont be needing most of the time ) and all these things will cost you around $50 at least.
But there is a
Bower 67mm filter adapter, UV Filter Combo which cost you only $23 ! There are more items in combo package. You get a Bower 67mm Filter Adapter, a 67mm Tulip Hard Lens Hood, 67mm UV Filter, 67mm Circular Polarizing Filter, 67mm FLD Filter and Precision Design 5-Piece Camera & Lens Cleaning Kit. Only thing you miss here is
67mm Lens Cap which will only cost you $5-$8. There are only few other deals match for this one. Buying a good Combo like this from Amazon will same you shipping cost and some money which you can use for buying another accessory like Spare battery or Tripod.

Filter adapter is plastic so handle it carefully. Just check it carefully before trying to mount it on lens barrel. it will fit only one way and don't press too hard. If you think this one is too cheap you can always buy the original
Canon 67mm Filter adapter which will be around $20. But I don't see why anyone would go for that when you can have all accessory set for same price.
Canon SX50 HS camera doesn't come with a Lens Hood so you will need to buy one separate if you use Lens Hoods. and even cheaper len hood cost you around $15. You can check around in Amazon. Hood won't improve image quality much but it will provide extra security for front element of the lens barrel .
Complete Cleaning Kit comes very handy too. You need to keep your camera lens clean from dust. It's the worst enemy of lens next to fungus. If dust goes to lens mechanism you get get this nasty "Lens Error, Please restart" message. I get it in my Canon SX10 Camera and I know how badly it can mess things for you. Camera must be kept clean and dust free. Always clean the camera before taking it somewhere or when you back from a outdoor trip. This is improve your camera life.