CANON 17-55 vs SIGMA 17-50 | f2.8 lens comparison

Comparing these two lenses to see which of them has a better features and specs.
I hope that this video will be helpful for those people who can't decide which one to buy. I have used them both in many situations, so I want to share my own opinion which one performs better.

If you would like to know something specific feel free to ask in the comments below :)

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Camera used to shoot this video: CANON 80D
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Timecodes

0:00 - Intro
0:24 - Size comparison
0:33 - Built quality
0:50 - Zoom range
1:05 - Vignetting
1:19 - Sharpness
1:37 - Bokeh
1:48 - Autofocus
2:07 - Image stabilization (IS)
2:38 - Conclusion

Видео CANON 17-55 vs SIGMA 17-50 | f2.8 lens comparison канала ERLICS