It is interesting how these things go in waves: today's recommended lens is forgotten tomorrow. And vice versa. A year ago no-one would have recommended the DA18-250mm if this question came up, and yet today no fewer than four people choose it!
The one and only advantage of the long zoom is that you will not need to change lenses to get this range. But in every other way there are better lenses, lenses that let in more light, have less distortion, more resolution, better handling, are more compact and so on. So how did this end up being today's choice? I have no idea. Solar flares perhaps.
This is not to say that one cannot take great photos with it. One can take great photos with anything. And I have seen professionals using this lens, professionals who lived in hot countries with lots of light at all times. And who never used it down to the 18mm end.
Otherwise, to get better quality, just
change lenses for goodness sake. It's not that hard and it is the reason you have an SLR in the first place. To cover the range you asked about, the DA 17-70mm F4 is often recommended. I have instead the older DA16-45mm f/4 which is incredible value for money. This is a constant aperture lens that gives you 2mm more in the wide end than the super-zoom (and that is a significant increase in field of view) while being very low on distortion and good even out to the corners. It covers the entire focal range you need for landscapes, streetscapes, etc.
If you need longer focal lengths just change to the Takumar you have, or consider at some point the DA 55-300mm, which no zoom can touch for good IQ at a reasonable price while covering a wide focal range.
But before even that I'd recommend a fast prime so you can experience what you are missing by using only slow zoom lenses.
Originally posted by Lowell Goudge You should consider overall how to cover from 10mm to 200 mm. Longer if wildlife is of interest.
Depending upon importance to you much of this may ultimately need to be at f2.8
This is an interesting way to look at it. For me, I am happy covering the range 12-77mm which I can do with two primes and one zoom, all of which fit in pretty well any camera bag. Of course I do own other lenses but they are not necessary. Maybe for one shot in 100 do any need any longer focal length.
But I am not happy unless carrying a lens at least as fast as f/2.