Tamron has announced its 28-300mm F/3.5-6.3 Di VC PZD (Model A010) superzoom lens for full frame SLRs. A near-twin of the 16-300mm F3.5-6.3 for APS-C, it’s distinguished from the previous model by featuring an ultrasonic-type ‘Piezo Drive’ autofocus motor, splashproof construction and more-compact design with a 67mm filter thread.