Imaging recource: Tamron SP 150-600mm zoom update has better IQ, stronger stabilization, faster AF & new teleconverters

    A little shy of three years ago, Tamron announced development of a new lens with some serious telephoto reach. A month or so later, the Tamron SP 150-600mm F/5-6.3 DI VC USD lens went on sale, providing a fairly affordable option for nature photographers and others with a need to bring distant subjects right up close. Now, the company has overhauled its mighty telezoom with a new optical formula, updated electronics and compatibility with two newly-available teleconverters, among other changes, but it all comes at a somewhat...
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