Yes, that's what I've been reading - that for true 50mm (not that I ever used a film camera) on a 1.6 crop factor camera you should be looking at 28, 30 or 35mm. The 30 definitely gets you closest.
I'm now browsing the Sigma 10-20mm f/4-5.6 for landscapes. It is about the same price as the 30mm 1.4 -- just for a different purpose really. I certainly know what will be on my wish lists for many years - lenses!
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