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The SEL2470Z has better optics that is produced by Zeiss. I has slightly wider cover and a fix aperture across the zoom range than the SEL2870.
Sorry, there was a problem. Please try again later.This is a good resource to answer your question. http://www.dxomark.com/Reviews/Sony-FE-28-70mm-F3.5-5.6-OSS-Serious-contender-to-the-Zeiss/Conclusion
Sorry, there was a problem. Please try again later.Yes it's sharper, and way better built (all metal). I love mine.
Sorry, there was a problem. Please try again later.YES!!!
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