Ever since borrowing a ZEISS 18mm equivalent lens for a trip to Europe many years ago, I have enjoyed the ultra-wide, not too wide, and definitely not fisheye, view of the 18mm. So, of course, one of my motivations for exploring photography with iPhone was the existence of many 18mm equivalent wide-angle clip on lenses. I have two, one of the ubiquitous cheap ones I bought as an example of the kind in a full lens kit for under $30, and then my Sirui which is rated among the best. Combined with in-camera (or in-phone) HDR the results are pleasing…if not comparable to my 18mm lens set on the Sony a6500. But then I did expect large sensor performance from the tiny phone sensor. This is the marsh down by the mouth of the Mousam River a few miles from my house. iPhone SE 2020 with Sirui 18mm lens. Vivid HDR extension in ProCamera. Processed in Polarr and Apple Photos.