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Tokina Atx Pro Lenses
Canon EF 24-70mm f/4L IS USM Lens
Based on multiple reviews/reviewers that I have read, this much newer lens performs much better (sharper) at 24mm than the 24-105mm, and has far less diffraction at this focal length as well. The 24-105mm performs better at 70mm - is a bit sharper at the center at the edges they are more even. The lens being offered in this Massdrop has a much newer IS implementation and will provide up to 4-stops of improvement versus the 2.5-3-stops of IS from ...
Lessons from a Failed Experiment – Minneapolis GW Ramp