VILTROX 85mm F/1.8 F1.8 Mark II STM Full-Frame 85mm f1.8 ii for AF Auto Focus Sony E-Mount

Product overview

Viltrox 85mm f/1.8 Mark II STM: What to Know

The USB port is why this leads. Every third-party lens depends on communicating correctly with a camera body whose protocol it did not design, and the standing risk is that a body firmware update changes something and autofocus misbehaves. Viltrox's answer is to put an integrated microUSB connector on the rear metal mount so the lens firmware can be updated by the owner, which converts a permanent risk into a solvable one. Almost no competitor does this, and it should be a larger consideration than it usually is.

The optics are properly specified for the price. Ten elements in seven groups, including one extra-low dispersion element and four made from what Viltrox describes as highly transparent specialty glass, with an HD Nano multi-layer coating on individual elements to minimise ghosting and flare. Aperture runs from f/1.8 to f/16, and the minimum focusing distance is 80 cm, 2.62 feet. Autofocus is a stepping motor, STM, which is the quieter and smoother choice suited to video.

It is built for full-frame Sony E bodies and Viltrox gives the APS-C equivalence directly: it behaves as a 127.5mm on a crop sensor, which is a tight portrait length rather than a general one.

Two honest notes. There is no image stabilisation, which the detail table confirms, so handheld low-light work depends on the body's in-body stabilisation, and most Sony bodies worth pairing it with have it. And the front filter size is stated in the bullets rather than the table, so check it on the listing before buying filters. At this price against Sony's own 85mm options, the saving is substantial and the firmware port is the reason to be comfortable with it.

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