a simple a good all round choice would be the Tamron 18-270 PZD. it's light, somewhat affordable, has good range, decent lack of CA(those ugly purple borders when you shoot something against a bright sky). the only down side is it's an external zoom, so it's not good with the elements(rain, humidity, sand, dust,...), and it's a little slow to get in focus, but once you have something in focus, the tracking speed is not too bad. it's a must have lens for anyone with a DX-crop DSLR.
with it you can sell off your 18-70, and get at least a 35mm f1.8 for low light or all round fast street photog lens, and anything else, is really up to what you want to shoot. Sigma 10-20(DX lens) for ultra-wide, or if you intend to move up to FX in a few years, then just stick with buying FX lens, Nikon 16mm fish, 85mm/135mm for portraits, Sigma 150mm f2.8 for macro, etc... but decent quality FX lenses are quite expensive... it's all up to what you want to shoot and how serious are you into photography vs what you are willing to spend. there'll be probably lots of opinions telling you to get all the super expensive lenses. you don't need them, at least not right now, or not until you know you want to turn photography into a serious hobby. in that case, i suggest taking a course(not online) with a local master to really get to know what a current digital camera is capable of, and various accessories use.
one thing before considering any other lenses, buy a good quality tripod, preferably one where the ball head and the tripod are separate. something that when fully extended with your camera attached, won't wiggle much. if you're not a 40kg girl, then there's no worry about wasting money on carbon fiber. get a solid aluminum tripod, like Manfrotto 055 series. you can't go wrong with it. with a 486rc2 ball head, this setup can easily hold 6kg (~roughly 4kg if on it's side). you can get an L-bracket if you shoot a lot of portrait oriented shots. |