![]() Not only that but the FE 50mm f/1.2 GM at 87mm in diameter, 108mm in length and 778g, it’s only marginally larger than Sony’s own Planar T FE 50mm f/1.4 ZA, and exactly the same weight this lens costs 1498/1299. However, on the FE 50mm f/1.2 GM Sony has harnessed four XD Linear motors that work in tandem to deliver impressively nippy autofocus, that’s also practically silent. However, as Sony has shown here, offering its owners the option of fast-aperture lenses is not an issue. ![]() In the past, this has often resulted in rather sluggish AF. ![]() Ultra-large-aperture lenses inevitably require a lot of glass, which in turn means they need to move large, heavy optical groups for focusing. With MF Assist enabled on the camera, it’ll automatically engage a magnified view for the most accurate results. With this 50mm f/1.2 its amazing how clear and sharp is the magnified manual-focussing image in my Sony A7R IV, especially for night shots. One can’t help but ponder if Sony made this lens, at least in part, to dispel the myth that the smaller lens mount. ![]() F1.2 offers a 0.5 EV improvement over F1.4 lenses in terms of light-gathering and subject isolation ability, in case you were wondering. If you set the camera to Direct Manual Focus (DMF) mode, you can also use it for fine-tuning after autofocus has been achieved. Sony, not one to be left behind, just released its first F1.2 prime, the FE 50mm F1.2 GM. It operates electronically rather than mechanically, but thanks to Sony’s Linear Response MF design, it provides a faultless focusing experience when you flick the small switch on the side of the barrel to MF. The large manual focus ring at the front of the lens rotates smoothly without any end stops. Here you can see the AF/MF switch and one of the two AF-stop buttons
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