The best replacement for sigma 18-35 is canon 16-35.

The best alternatives to sigma 18-35 are rated as following:
★★★★★  canon 16-35
★★★★★  canon 17-55
★★★★  nikon 17-55
★★  canon 24-70
★  canon 17-40
★  panasonic 12-35
★  tokina 11-16
★  nikon 18-35

Your alternative for sigma 18-35 is not listed? Suggest!
Speaking about sigma 18-35, one probably shouldn't forget about canon 70d.

Other search terms related to sigma 18-35 and their ratings are:
★★★★★ canon 70d
You have in mind a companion for sigma 18-35 and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of sigma 18-35 in all years. Click on graph for more.
sigma 18-35
canon 16-35
canon 17-55