Tamron is working on a 28-75mm F2.8 lens for full-frame Sony mirrorless cameras: Digital Photography Review

Details are thin at this point, but the 28-75mm F2.8 Di III RXD will offer "superb optical performance" and a moisture-resistant construction.
Details are thin at this point, but the 28-75mm F2.8 Di III RXD will offer superb optical performance and a moisture-resistant construction.

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