I have the Tamron SP 24-70mm f/2.8 Di VC USD G2 Lens and I can say it is a fantastic lens. Second place to the top of the mark Canon EF 24-70mm f/2.8L II USM Lens in my book. However, the two things, do you need f2.8? And, the Canon f4 is very good and $300 or $400 cheaper.
Canon EF 24-70mm F4 L IS USM is constructed to work with all sorts of camera sensors including the one of Canon EOS 90D. Focal Length The Canon camera has a sensor of type APS-C, a smaller version compared to a Full Frame sensor, which means that your experienced Focal length will be multiplied by 1.6x.
New Listing Canon EF 24-70mm f/4 L IS USM Macro Lens EXCELLENT EOS DIGITAL + BONUS UV Filter. $537.11. $12.99 shipping. or Best Offer
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canon ef 24 70mm f 4 l is usm lens