Tested: Canon 15-85mm f/3.5-5.6

SPECIFICATIONS:

15–85mm(15.00–84.98mm tested), f/3.5–5.6 (f/3.32–4.88 tested), 17 elements in 12 groups. Focus ring turns 90°. Zoom ring turns 80°. Focal lengths marked at 15-, 24-, 35-, 50-, 70-, and 85mm.

Diagonal View Angle: 84–18 degrees

Weight: 1.30 lb   

Filter Size: 72mm

Mounts: Canon AF   

Street Price: $620

TEST RESULTS:

Distortion: At 15mm, 0.55% (Visible) barrel. At 50mm, 0.15% (Slight) pincushion. At 85mm, 0.12% (Slight) pincushion. 

Light Falloff: At 15mm, gone by f/5.6. At 50mm, by f/5.6. At 85mm, by f/6.3. 

Close-Focusing Distance: 12.87 inches.

Maximum Magnification Ratio: At 15mm, 1:14.25. At 50mm, 1:5.32. At 85mm, 1:4.11.

Image Stabilization: 2–3 stops.