Originally posted by rpriedhorsky The 18-250 has great image quality. The key drawbacks are: (1) slow, (2) distortion (correctable in software), (3) vignetting, and (4) quality control problems I mentioned above.
Not switching lenses is a huge time saver that enables you to take the camera to places and events you simply couldn't otherwise. For me, it's hiking; I want to keep moving, and others on the trip won't have the patience to wait for me to muck with lenses and such.
I don't think this shows a balanced view of this lens.
I've done a three week safari through Tanzania with only the Tamron 18-250mm mounted. Yes, it is not very fast, it suffers from vignetting and it shows more purple fringing than my 16-50mm.
But.... the vignetting and purple fringing is easily corrected in PP with Lightroom, AND, the advantages of this lens are:
- Light weigth,
- small package,
- cheap,
- very long range,
- no dust on you sensor due to frequent lens changes
and
- you will not miss that shot because you had the wrong lens mounted.
It was definitely worth the money I paid for.
- Bert