Lens Test: Tamron SP 70-300mm f/4-5.6 DIVC USD AF

SPECIFICATIONS:
70–300MM (70.01–301.31mm tested), f/4–5.6 (f/4.00–n.a.* tested), 17 elements in 12 groups. Focus ring turns 200°. Zoom ring turns 90°. Focal lengths marked at 70-, 100-, 135-, 135-, 200, and 300mm.
DIAGONAL VIEW ANGLE: 34–8 degrees
WEIGHT: 1.78 lb FILTER SIZE: 62mm
MOUNTS: Canon AF, Nikon AF, Sony AF
INCLUDED: Lenshood
STREET PRICE: $450

TEST RESULTS:
DISTORTION: At 70mm, 0.08% (Imperceptible) barrel. At 200mm, 0.29% (Slight) pincushion. At 300mm, 0.28% (Slight) pincushion.
LIGHT FALLOFF: At 70mm, gone by f/5. At 200mm, by f/5.6. At 300mm, by f/8.
CLOSE-FOCUSING DISTANCE: 56.5 inches.
MAXIMUM MAGNIFICATION RATIO: At 70mm, 1:15.1. At 200mm, 1:5.27. At 300mm, 1:3.69.
IMAGE STABILIZATION: 4 stops.