Wished For Lenses

Exactly so: 70mm f1.8 equates to a 105mm f1.8 lens. And a 105mm FX-equivalent lens is just what I want as my next lens for my D90 DX body.

I already have a 50mm f1.8, which is just fine for when I need a 70-75mm FX-equivalent. But sometimes the 50mm is too short, while an 85mm (127mm FX-equivalent) would be too long.