Friday confession : I want Canon EF 17-40mm f/4.0 L USM Lens! Saw someone photo taken with this lens in fb & it look fabuloso!  Great for my architecture/real estate photography and/or environmental portraits. awwwww.. and its L-series EF lens.  Purfeect for me. oh la la.  (Credit: The-digital-picture.com)   It may be not the best lens…