Tamron announced today that it’sdeveloping a new Tamron 100-400mm f/4.5-6.3 Di VC USD lens. Weighing it at just 39.3 ounces (~1.11kg), the lens will be the lightest in its class (the ultra-telephoto zoom lens category).
The lens has an “advanced optical design,” including 3 low dispersion lens elements which give “greater aberration reduction.” It uses magnesium in key areas of the barrel, which improves weight reduction, strength, and portability... more