it’s a lens and mirror arrangement allowing the photographer to frame the shot looking down from above. Modern cameras often have no viewfinder, so this is aimed at digital compacts without flip ...
That said, probably the biggest upgrade is the new lens system ... decade or so, cameras on smartphones have evolved so much that they can pretty much replace a standalone digital camera for ...
Check out our guide to optical vs digital zoom ... who test lots of products. At $299, this smartphone lens delivers excellent value, turning your phone into a thermal camera in seconds.
James also contributes to 3G.co.uk, 4G.co.uk and 5G.co.uk and has written for T3, Digital Camera World, Clarity Media and others, with work on the web, in print and on TV.