I agree that 35 to 70 F4 is a best bet lens, regardless of budget, rumors are that is based on a Leica design, think of it a normal range zoom. My 80 to 200 F4 is very sharp at working aperture F8 to 11, it is decent a F4, not as good as pro level 80 to 200 2.8, but under a $100. My third is a Konica Minolta 75 to 300 D 4.5 to 5.6. I find it sharp up and down the pike. For a wide to short tele Konica Minolta 28 to 100 D. Only lens I would avoid are the power zooms, I have several and although sharp the power zoom motors are prone to failure.