Tamron 28-80mm f/3.5-5.6 Aspherical Reviews

You can't expect much from such a cheapie, but for the money you pay you get pretty much. It feels VERY plasticy and it's obvious at a first glance that it's an amateur lens. But the optical quality is surprisingly good. I use it with Nikon D70s and I don't need to care about vignetting or corner softness due to camera's DX format image sensor. Distortion is fully acceptable and I didn't notice a chroma aberration problem in any real photo situation. When there's a strong light source in the frame moderate ghost is visible but I've seen worse. No idea about coma - I don't care about that.
Overall I think this is a pretty fair lens and it's worth more than it costs.

For tis price it gives quite nice optical performance. However the plastic build is weak after a few years lens parts are not fitting so nice anymore. It has no effect on the result on the pictures but gives a feeling of using something being a weak quality. With a more solid body this lens would be a good or very good middle class equipmentfor general purpose - but now it seems to be a strong cheapie. I used it on Pentax bodies, bought it used and given away to a collector. I didn't notice any distortion or aberration or bad effect, however I never used during extreme - lighting - circumstances.