Photography Tips : How Does a Telephoto Lens Work?

A telephoto lens works by magnifying the front element to achieve a much deeper field of focus. Find out how telephoto lenses work with tips from an award-wi...

Canon EF 300mm f/2.8L IS USM Telephoto Lens for Canon SLR Cameras

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Review – Olloclip Telephoto Lens | emilyluxton

Last year, I tested out the fabulous Olloclip 4in1 lens ( read my review here ) - an awesome set of clip-on iPhone lenses from macro to fish eye – and fell in love with the clever little product. So, I wanted more from Olloclip, which is where their other brilliant product, the telephoto zoom lens , comes in.

This nifty little gadget simply clips straight over your iPhone...

Source: emilyluxton

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