jose_angel Posted May 10, 2015 Share Posted May 10, 2015 <p>Fabian, at 28mm the 16-85 should be something near f4... so just close your lens by one stop to check the difference.</p> Link to comment Share on other sites More sharing options...
eric_arnold Posted May 11, 2015 Share Posted May 11, 2015 <p>i think you just illustrated the strength of the 28-75. that's an awesome portrait shot. regarding DoF, you'd lose a stop at the short end witht he 16-85, and at the end of the range, where the tamron is best optically, you lose two whole stops. and that's after taking a 1-stop penalty for APS-C compared to full frame.</p> Link to comment Share on other sites More sharing options...
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