I acquired an app for my iPhone called Spectre that makes the phone pretend it's a tripod mounted SLR with an ND filter on. It does this by taking a series of images and then blending the result to smooth out running water or ghost out people in the scene. I played with this a bit out along the coast last month but found a lot of artifacts in hand held shots that left me somewhat unimpressed. I decided to give it another try with some waterfalls I have been shooting on this trip and used my camera/tripod to steady holding the iPhone for the 3 second set of exposures. This image is the same scene as my Waterfall Wednesday image but taken with my iPhone with the Spectre app: Not going to replace my DSLR soon but the result was a lot better than I thought it would be.... Edit - here is another shot I got today while bracing both hands on a bridge rail for the 3 second burst: For the record - neither of these are straight out of the camera images - I have processed them through Lightroom and Photoshop as if they were from my DSLR.