The tamron is more flare resistant.
Tamron 17 50 2 8 su full frame.
17 50 is a very useful range with a dslr especially with the constant f 2 8 which makes low light shooting possible.
I have had the tamron 17 50 2 8in the past and after sending it back for focus issues had a year s good service from it.
I changed to a sigma 17 70 as i got fed up with lugging two heavy zooms on walkabout my usual photo style.
Any canon ef canon m canon rf four thirds fujifilm g fujifilm x hasselblad xcd leica l leica s micro four thirds nikon f nikon 1 nikon z pentax k pentax q pentax 645 sigma s sony a sony e.
Backed up by the tamron 28 75 2 8.
Tamron calls this the tamron 17 50mm f 2 8 xr di ii vc ld aspherical if.
The canon s biggest advantage is the 3 stop image stabilizer that the tamron 17 50 lacks.
Any nikkor irix sigma tokina tamron samyang venus zeiss zy optics.
Haven t shot that much with it yet but the few photos i ve taken suggest it s a keeper.
The compositional options afforded by the sp 17 50mm f 2 8 di ii vc s wide to moderate telephoto zoom characteristics are prized by experienced photographers rendering a picture angle range approximating a 26 78mm lens on a full frame dslr or a 35mm slr.
The pics are.
Tamron sp af 17 50mm f 2 8 xr di ii ld if aspherical lens for pentax k mount 4 2 out of 5 stars 175 tamron auto focus 70 300mm f 4 0 5 6 di ld macro zoom lens with built in motor for nikon digital slr model a17nii.
This tamron lens 17mm is wider than this canon lens 17mm.
Of course the canon has 5mm over the tamron on the long end.
The tamron 17 50mm f 2 8 xr di ii lens shows less vignetting than the canon.