Viltrox AF 135mm F1.8 LAB

The Viltrox AF 135mm F1.8 LAB is a full-frame prime lens, released in 2024. It is a recent design. It comes in separate versions for Sony E and Nikon Z, so pick the one made for your camera.

A 135mm focal length suits head-and-shoulder portraits, stage performers and indoor sport, all shot from a distance. The f/1.8 aperture helps you keep shooting under dim stage or gym lighting. The pairing also helps a subject stand apart from the background.

The main trade-off is the single focal length. You change framing by moving, not by zooming, so plan your positions at an event. The lens also has no built-in stabilization.

The Sony E version weighs 2 lb 11.6 oz (1235 g) and runs 5.74 in (145.7 mm) long. Its body is 3.66 in (93 mm) across. That makes it a big, heavy prime for a portrait session. A screw-in filter must match the 82mm thread on the front. Physical specifications score 92/100.

At 135mm,this lens gives a telephoto view that suits portraits and selecting one performer from a wider stage. Framing depends on subject size and distance. Camera position determines perspective. Check the view from your allowed position before an event, especially when a seat or barrier prevents you from moving.

The f/1.8 maximum aperture is very bright for this focal length. It helps keep shutter speeds usable under stage lights or at dim indoor events. That in turn helps you avoid pushing ISO as far. The wide opening also helps separate one performer or player from a busy background.

At f/1.8,depth of field can be very shallow, especially at close distances. Focus carefully on the important part of the subject, such as an eye in a portrait. For a group, stop down as needed and check each face. Keep the group at similar distances where possible.

Closest focus is 2.4 ft (72 cm), measured from the sensor. Maximum magnification is 0.25x. This close range can help with small details. Choose your distance for the framing you want rather than using the minimum by default.

The lens carries weather sealing against dust and moisture. That suits outdoor portrait sessions and evening sport, where conditions can turn damp.

There is no built-in image stabilisation. A camera with body stabilisation can help with shake. At this telephoto focal length, a monopod or tripod can also support the equipment during a long event. Subject movement still calls for an appropriate shutter speed, even when the camera is supported.

The Sony E front element has a coating that helps water and oily marks wipe away. Remove loose grit before wiping it. Use cover in persistent rain and keep the mount clean when changing lenses. Put both caps on before storing the lens.

The optical formula uses four low-dispersion elements. Low-dispersion glass helps reduce chromatic aberration, where colours focus at different points and leave coloured fringes along high-contrast edges. Backlit portraits and stage shots are scenes where those edges can appear. Focusing is internal, so the barrel keeps its length while focus changes. Construction scores 38/100.