Sigma announces all-new 150-600mm supertelephoto lenses!!

LATEST! Oct 29th, 2014. Comparison of Sigma and Tamron.
http://www.lenstip.com/index.php?test=obiektywu&test_ob=417

(Sept 12, 2014) : Sigma announces a pair of 150-600mm lenses three days to the opening of Photokina in Germany.


Sept 5. SIGMA UNVEILS 150-600 LENS IN DIRECT COMPETITION TO TAMRON!
Larger and heavier than the Tamron 150-600mm f/5-6.3. Weather sealing. Optimised AF and OS (image stabilisation). More glass elements. The Tamron 150-600/F5-6.3, arguably one of the hottest lens ever made, became an unprecedented success story for a budget supertelephoto with demand exceeding supply. Will the heftier Sigma dethrone the Tamron? I am sure we are all anxious to know. We shall see.

NOTE: I have made arrangements to test this lens when it becomes available. So watch this space.

Currently available for Canon/Nikon/Sigma mounts only. Sony A-mount version expected to be released in six months.
No price yet.

Specification:
Manufacturer: Sigma
Model: 150-600 mm f / 5-6.3 DG OS HSM
Lens Type: Telephoto zoom
Focal: 150 – 600 mm
Aperture: f / 5 – 6.3
Field of view: 16.4 – 4.1 degrees
Min focus: 2.60 m
Maximum magnification 1: 5
Minimum aperture: F22
Number of diaphragm blades: 9
Auto focus: AF / MF
Lens design: 24 elements / 16 groups
Filter Size :105 mm
Macro: No
Stabilization: Yes
Available mounts: Canon EF
Nikon F, Sigma
Dimensions: 290.2 x 121 mm
Weight: 2860 gm
Release date: 05/09/2014
Availability : unknown