In parallel to charm hadroproduction the experiment SELEX (E781) at Fermilab is pursuing a rich hyperon physics program. SELEX employs a 600 GeV/c beam consisting of 50% Σ and π each. The three-stage magnetic spectrometer covering 0.1⩽xF⩽1.0 features a high-precision silicon vertex system, broad-coverage particle identification using TRD and RICH, and a three-stage lead glass photon calorimeter. First results for the Σ charge radius, total Σ-nucleon cross sections, and a new upper limit for the radiative width of the Σ(1385) are presented.

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