Those of you who follow my lens reviews may already know that this comparison of the Tamron 15-30mm f/2.8 VC and the Canon 16-35mm f/4L IS has been in the works for a year already. Because of the different focal length ranges and maximum apertures, getting comparable images was difficult. I started shooting for it in July of 2015, and finished in late winter of 2016. I used two different Canon 16-35 f/4L IS lenses during that time, but they gave me consistent results.
Regardless, the two lenses remain similarly priced, with the Tamron priced around $1200 and the Canon now down to just under $1000 (while the old f/2.8 II model without image stabilization costs $1500) and would be my top two choices for Canon at this focal length range.
The three lenses used in the video, from left to right: Tamron 15-30 f/2.8, Canon 16-35 f/4, Tokina 16-28 f/2.8
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