Sorry to resurrect an old thread but I had the same question. I'm looking for a 50 or 65mm wide-angle lens for my RZ67. Why were you disappointed with the 50mm? I can't afford the ULD so I'll have to go for the regular 50mm f4.5 W. The 65mm is also an option and around the same price. I am looking for a good lens for landscape photography and for taking pictures of outdoor lighting on homes at night.
Any help would be appreciated.