The Tamron SP 150-600mm F/5-6.3 Di VC USD is one of a select group of supertelephoto zooms for full frame SLRs that reaches or exceeds 400mm focal length, while still being reasonably portable. Its trump card over its closest competition lies in its longer focal length – at 600mm full zoom, it’ll let you get your subjects that bit larger in the frame. But does this result in an unacceptable compromise in optical quality? See the lens test data and our analysis
related news: Digital Photography Review (dpreview.com)