First off, No, I am not talking about using EF-S lenses on the new 6D in this thread.
OK So the new 6D full frame camera has been announced and I will say that I am not interested in that. The 7D still does what I need it to do. But I am interesting in hearing other people's opinions on buying a bunch of EF-S lenses. I'll just call them crop only lenses from here on so that we include the third party ones in the discussion.
Me personally, I currently have 3 crop lenses, well 5 if you include the kit lenses that my wife uses on the Rebel Xt. I am looking into getting an UWA next so that pretty much by definition will be a crop lens too to bring me to 6 total.
What do you think will happen to value of these crop lenses on the used market over time now that Canon, Sony, and Nikon are making the FF jump a smaller leap? Pure economic theory would suggest a lower demand for used crop lenses and thus a lower price on the used market, but reality may be different. What do you think? Even though I'm not going to be buying a 6D, there may be a time when the 5D3 becomes cheap enough or the future 6d2 or 5d4 make me want to jump to full frame and then I am going to want to the the crop lenses.