just seen this on face book .. very cool .. not sure if it's been posted on here before .. so if it has .. here it is again . Well worth watching if you have an iPhone !!
https://iphonephotographyschool.com...stom_TemporaryOptInURL=&inf_TgqoA3RBXbjS3ucH=
https://iphonephotographyschool.com...stom_TemporaryOptInURL=&inf_TgqoA3RBXbjS3ucH=