CONSTANT APERTURE OF F/2.0 FOR NEW FE MOUNT STANDARD ZOOM

THE TRADE-OFF IS a focal range of 28-70mm rather than the 24-70mm that's typically considered the ‘staple' standard zoom, but many may prefer the extra stop of lens speed (as per Canon's similar RF mount L series model). An f/2.0 constant-aperture zoom is quite an optical challenge, and the Sony FE 28-70mm f/2.0 G Master's optical construction comprises 20 elements in 14 groups with a total of ten special types. These comprise three ‘eXtreme Aspherical' (XA) elements, three with aspherical surfaces, and four with extra-low dispersion (ED) characteristics… three of these classified as ‘Super ED'. The aspherical elements are designed to optimise centre-to-corner sharpness across the full zooming range while the ED types correct for chromatic aberrations. Sony's ‘Nano AR Coating II' anti-reflection multi-coating reduces ghosting and flare. Focusing is…

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Camera (Digital) - 1 Issue, Issue 429

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