- FX coverage
- Autofocus (in-lens focus motor), internal focus
- 21 elements in 15 groups, 3 SLD elements
- 9-blade aperture diaphragm
- smallest aperture is f/22
- 77mm filter ring
- 59" (1.5m) minimum focus; 1:4.2 maximum reproduction ratio
- 8 x 3.6" (203.5 x 92.5mm) long, diameter
- 61.7 ounces (1750g) weight
- included rotating and removable TS-31 tripod collar, LH830-01 728/72A lens hood, case, caps
- US$1400
- Model Number 728
Thom's Mini Review: A disappointing lens. Optically weak at 400mm in my experience, despite Sigma's good-looking MTF charts. Could be a bad sample, but I've heard from enough other people who were disappointed with this lens that I don't believe my experience was just a sample problem. The Nikkor 300mm f/4 with TC-14E was sharper, as was my older 80-400mm (non-AFS) in most of the overlapping range. The new Nikkor 80-400mm (AFS) beats this lens easily, but the new Nikkor is also significantly more expensive.
