Very good indeed as general-purpose lens, despite cost. Highly recommended
Very significant distortion at virtually all focal lengths, requiring correction in any photo with straight lines, NOT for architectural photography, also noticeable vignetting at either end of zoom range, esp; wide open
Very sharp at all focal lengths, even with Tamron 1.4 pro converter! Focuses v; fast even in low (non-existent!) light, reasonably light & compact for range (cf; equivalent Canon lens...); o v; good indeed.Great as single walk-about lens, especially for nature & portrait photography, nacr