I'm not a lens expert, but I do know a few things...... The longer the focal length options in a zoom the lesser the quality of the images coming out of it... for example a short zoom 24-35m would be better than a 25-75mm Don't use a tripod, especially with longer focal lengths even if it is a fixed focal, expect unsharp images. If you shoot hand held your shutter speed should be 1/XXX of the focal length or you are almost guarenteed shaky images. 300 mm lens 1/300 hand held.... now add to that the fact that many of the lower priced lenses have apertures of 4.5 or higher.... A tripod is a must.... Sorry can't give advice on any lens in particular... wish I could be of more help...

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