Lens Test: Sigma 70-200 f/2.8 EX DG OS

SPECIFICATIONS:
70–200MM (70.01–200.08mm tested), f/2.8 (f/2.76 tested), 22 elements in 17 groups. Focus ring turns 110°. Zoom ring turns 80°. Focal lengths marked at 70-, 85-, 100-, 135-, and 200mm.
DIAGONAL VIEW ANGLE: 34–12 degrees.
WEIGHT: 3.3 lb.
FILTER SIZE: 77mm.
MOUNTS: Canon, Nikon, Pentax, Sigma, Sony.
INCLUDED: Lenshood, lenshood adapter, soft case, tripod collar.
STREET PRICE: $1,700.

TEST RESULTS:
DISTORTION: At 70mm, 0.21% (Slight) barrel. At 135mm, 0.15% (Slight) pincushion. At 200mm, 0.26% (Slight) pincushion.
LIGHT FALLOFF: At 70mm, gone by f/3.5. At 135mm, by f/3.5. At 200mm by f/4.
CLOSE-FOCUSING DISTANCE: 48.74 inches.
MAXIMUM MAGNIFICATION RATIO: At 70mm, 1:13.9. At 135mm, 1:10.05. At 200mm, 1:6.57.
IMAGE STABILIZATION: 2 stops