First off, if you're a pro with a bag full of $2000 lenses, you're probably not interested in this, the 2nd least expensive "L" lens.Secondly, if you're going to compare this to a bunch of $2000 lenses, you're barking up the wrong tree.My guess is the typical buyer of this lens is someone who is taking their first tentative step into the world of "expensive" glass. This lens is made to order for you. It simply blows "ordinary" lenses out of the water. If you're used to the kit lens that came with your camera, or a 3rd party lens you got for $150, you are going to love this lens. You'll find yourself taking more pictures, taking time to frame your shots and basically caring about what you shoot. This is a lens that is far more talented than you are, and you'll strive to rise to its level.I cannot say enough good things. The sharpness ROCKS. The saturation and contrast are absolutely fantastic. The focus is instantaneous and silent, and usually dead on. And the red stripe looks really cool! :)Its heavy, and built like a tank. If you're looking for a lightweight, this ain't it. It is lighter than most other "L" lenses, however, and not too bad to carry.Drop the 700 bucks, and go out and take some serious photographs.

For the price I don't know if you can beat this lens. I have a $2000 24mm-70mm lens, and for portraits, this $100 lens is just as good.

2000円でお釣りがくるなんて、カメラ店に行けば5000円はするでしょう。

Super value for money. lots of attachments for almost every conceivable way you want to use a GoPro. Not really any instructions so takes some time to figure out and the instruction sheet consists of one double sided page of many phots that is hard to read. I scanned it and enlarged it so I could read it. The selfie stick works but I suspect it may fail if used to often although I do not plan to use it much since we have another fantastic selfie stick (but it cost almost as much as this whole kit). the case is great but the foam insert doesn't really seem to serve much purpose. Overall very impressed with how many things we got for a good price - chest mount, head mount, wrist mount, several helmet mounts, handlebar mount, tripod, selfie stick, and I am sure I am missing several.

The best and cheapest prime lens. Ofcourse other prime lenses that are like $500 or $2000 are better but honestly not by thaaat much. This lens is like $150 and it really does the job. Bokeh is great and I love how much light you get from such a huge aperture. The lens came undamaged and properly packaged!

This is an excellent camera for all users such as me. I had a Yashica camera with film. For years I was resisting to get into the digital world. Now, with this camera, I am totally sure I was too late to change. It's an excellent image with those 12mp.

Works really well for my 2000 Jeep Cherokee. Better then having to get a new filter every so often.

I'm still trying to find out the best possible mount for my needs. I'm also still learning how to use the product for my needs. It is super simple to operate.