Introducing the SIGMA 10-18mm F2.8 DC DN | Contemporary, This ultra-wide-angle zoom lens is designed for APS-C cameras, prioritizing compactness and lightness with high sharpness and a wide angle of view of 15mm (35mm equivalent) at the wide end. It's perfect for high-altitude sports like mountaineering, travel, vlogging, and everyday photography. Its lightweight design makes it easy to carry, while the wide F2.8 aperture excels in low light and creates beautiful background blur without sacrific

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Sigma-Algebra

Conditional Expectation-I