Here's the first posting from the New York CIty workshop/photowalk that we did in November 2012. It's the Empire State Building.Note: You can sign up for the Chicago Architectural Workshop as of now - check this post for information: https://plus.google.com/u/0/104126187923080331300/posts/BUPHVLGimFeSome notes: I've been using the brand new Hitech IRND Prostop2 filters generously provided by Hitech Format. For now I can say that I've definitely put aside my trusty B+W ND filters and will be using the Hitech IRND filters only: they're simply very neutral and they come as screw on and rectangular filters. As you know I'm very critical in my selection of filters, this is something I can really recommend.These filters will become available first at Amazon and B&H in the weeks to come. Thanks Rod Clark!Technical info: 2 x Hitech IRND "Prostop 2 - totaling 16 stops f/6.3 ISO100 17 mm 316s (5m16sec) exposure Software: Lightroom 4.0 PS CS6 - Silver Efex Pro 2