According to the latest set of rumors coming from a Twitter account howtofly, Tamron will soon announce a 17-50mm F4 lens for full-frame mirrorless cameras. The lens is lighter than Tamron’s 28-75mm f2.8 and is also affordable as it doesn’t feature optical image stabilization. Although at this shorter focal length, VC / optical image stabilization isn’t that much required. Btw, we already have Sony 20-70 F4G, certainly, we would love to see the comparison in between the two soon.
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So sad both of them don’t feature F2.8 – would be great focal length.