This circular diaphragm retains a nearly circular shape even at two stops down from its maximum aperture. Beautiful background blur effects Adopting a 9 blade circular diaphragm enables users to create beautiful background blur effects (Bokeh), which provide even greater potential for creative expression.This reduces the amount of barrel extension needed to cover the complete focusing range, making the entire lens more compact.
Achieves a 600mm focal length in a compact easy-to-handle package Ingenious optical design features minimize the movement of lens groups within the lens when zooming.
The lens also adopts eBAND Coating, developed from state-of-the-art coating technologies, and conventional BBAR (Broad-Band Anti-Reflection) Coating to greatly suppress ghosting and flare even when shooting under adverse lighting conditions. The front group contains three LD (Low Dispersion) glass elements (two in the first group, one in the third) for enhanced optical correction effectiveness, enabling the lens to thoroughly compensate for on-axis aberrations at the telephoto end.
Here are the technical specifications and product highlights: Specifications Model Today Tamron officially announced the development of the already rumored SP 150-600mm f/5-6.3 Di VC USD lens which will replace the current 200-500mm f/5-6.3 model. Pricing and delivery information were not announced. Update: some sample images taken with the new lens can be found here.
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