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Readers' memorable vacation photos of summer 2015

Readers' memorable vacation photos of summer 2015

Readers, thank you.

Thank you for sharing an array of stunning photographs from your 2015 summer vacations. Whittling down the hundreds of submissions is never easy, but this year's crop was especially challenging.

The proliferation of smartphones — nearly two-thirds of Americans have them, according to the Pew Research Center — means that the ability to capture an image is as close as your pocket or purse. But making a memorable picture is often more than a spur-of-the-moment shot; it takes planning and plotting to ensure the right light, composition and moment.

The photographs in this article and the gallery above show the kinds of results that elevate...