Olloclip 2x telephoto lens with polarising filter, we test out the Apple iPhone add-on

The Olloclip three-in-one detachable iPhone lens is a gadget we've used and love. Now the company is pushing out its 2x telephoto lens to effectively double an iPhone's focal length and wave goodbye to horrid digital zoom.

That means those further away subjects will appear closer and fill more of the frame - and all from this dinky, pocketable device. It's available for iPhone 4 and 5 models, so is right up to date.

READ: Hands-on: Olloclip three-in-one lens attachment for iPhone 5 review

But it's more than just a lens. On the front is a detachable polarising filter that will get keen photographers excited. Want less reflection and a boost of colours? Then this is exactly what you need.

Popping the lens on and off the camera is simple - it just clips on to the corner - and the size and scale of it mean it's really no inconvenience to carry around. There's a little pouch carry case to stop any dirt and gunk getting in the way too.

Got an iPhone and want to have a bit of extra fun with your photography? Then go nab an Olloclip 2x telephoto lens. It does cost £100, but we see it as a genuinely useful, faff-free design. It's among the best of the add-on smartphone lenses out there.