You can see the refocusing in action at a sample gallery at Lytro.com.

WSJ: Lytro Takes Fresh View on Picture Taking

Scarlets lock MacLeod was suspended in October from competitive action after a urine sample he supplied in January showed higher-than-permitted levels of testosterone.

BBC: Beattie says Scots behind MacLeod

If the target slab is deemed suitable, a number of test holes are likely to be drilled - using the rotation as well the percussive action - before a powdered sample is picked up and delivered to Curiosity's onboard laboratories.

BBC: Curiosity Mars rover hammers into rock

He downloaded a sample certificate of a corporate resolution, which is typically used to record an action taken by a company's board of directors.

FORBES: Your Name Here

Simon Wigglesworth, deputy chief executive of Epilepsy Action, said more research was needed, particularly given the "small sample size and the inconsistencies in the data collected".

BBC: Brain implant 'predicts' epilepsy seizures