I did cringe slightly as I wrote that headline, as it would be more correctly stated as ‘How to get shallow depth of field’ – bokeh being the particular appearance of the out-of-focus areas. But, thanks to Apple, the world is using one term to refer to the other, so I gave in where the headline was concerned.

Only the iPhone 7 Plus, with its dual-camera system, has the ability to generate artificial shallow depth of field, an effect activated in yesterday’s beta. But all iPhones are capable of generating optical shallow depth of field in very limited circumstances, and it’s actually really easy to do so …

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