![]() This lens also helps to minimise both distortion and vignetting. ![]() Positioning a large-aperture aspheric lens at the front of the series of lenses in the design has enables Sigma to design the lens with a relatively slim barrel. It matches well with metal parts and enables designers to produce slimmer zoom rings and scaling rings TSC combines minimal thermal shrinkage with outstanding hardness and has 25% greater elasticity than conventional polycarbonate. Like Sigma’s other ‘Art’ lenses the 35mm f/1.4 is made mainly from TSC (Thermally Stable Composite) plastic and metals, with a brass mount that is ruggedly constructed and has treated surfaces to ensure durability. Whether it’s equally useful for cameras with APS-C sensors depends on how much you need lens speed. The 35mm focal length has provided a classic angle of view for general photography ever since the days of film and it’s just as relevant for ‘full frame’ cameras in the digital era. ![]() This mount on the review lens was rather stiff but the hood carries an ‘in-out’ mark to help you orientate it correctly for easier attachment. The lens is supplied with front and end caps and a petal-shaped lens hood that attaches via a bayonet mount. Sigma’s Super Multi-Layer Coating reduces flare and ghosting to deliver sharp and high contrast images and is effective in backlit conditions. The diagram above shows the arrangement of the exotic elements in the optical design. Nikon and Pentax mount lenses lack an aperture ring. Designed primarily for cameras with ‘full frame’ (36 x 24 mm) sensors, it can also be used with APS-C sensors, where it covers a focal length equivalent to 56mm on Canon cameras or 52.5mm with other brands (Nikon, Pentax, Sigma and Sony). Sigma’s 35mm f/1.4 DG HSM is the first model in the company’s ‘Art’ series of lenses. The Sigma lens is roughly half the price of the cheapest 35mm f/1.4 lens from Canon, Nikon, Sony or Zeiss. Only the Samyang lens is cheaper than the Sigma model, which is much more solidly built. The Sigma lens is very competitive in three key areas: performance, build quality and price. There’s plenty of competition for this lens in both angle of view and lens speed, with Canon, Nikon, Samyang, Sony and Zeiss all offering 35mm f/1.4 lenses and most also having slightly slower lenses with the same focal length in their ranges. ![]() But if you’re looking into the future and seeking lenses that will match the 24-36-megapixel sensors of current high-end DSLRs, this lens won’t let you down. It’s rugged enough to take bushwalking, although on the heavy side and not water-resistant. This is an excellent ‘walkabout’ lens and great for street photography. The 35mm focal length has provided a classic angle of view for general photography ever since the days of film, and it’s just as relevant for ‘full frame’ cameras in the digital era. ![]()
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