Sony FE 28-135mm F/4 G OSS PZ SELP28135G

Sony built this lens for full-frame E-mount cameras, and it covers 28–135mm at a constant f/4. That span takes in wide room shots at one end and portrait-length framing at the other. An electric zoom ring points to video use, for shooters who mix stills and moving footage.

Sony released the lens in 2014. Its powered zoom suits event and documentary video where framing must change during a take. The main trade-offs are weight and the f/4 maximum aperture. Check available light and the support needed for a long session before choosing a setup.

The lens weighs 2 lb 10.9 oz (1215 g) and measures 6.4 in (162.5 mm) long and 4.13 in (105 mm) across. Account for that weight when choosing camera support or packing a bag. Screw-in filters must match the 95mm thread. Allow room for the filter and hood when setting up around other equipment.

The 28–135mm span suits run-and-gun coverage of events. At 28mm it frames rooms, tables and small groups. Toward 135mm it tightens to head-and-shoulders portraits and picks out a speaker on a distant stage. Framing still depends on subject size and distance, and perspective follows where you stand.

The widest opening stays at f/4 across the whole zoom. That makes exposure planning consistent when you move between setups or zoom mid-take. A constant maximum aperture does not mean constant depth of field, which still changes with focal length and focus distance.

A motor drives the zoom. Powered control allows you to change framing during a video take without turning the ring through the full range by hand. Practise the intended move before recording, and check the start and end compositions. The aperture remains available at f/4 throughout.

At the wide end in AF/MF mode, closest focus is 1.3 ft (40 cm). The telephoto end and full manual-focus mode have longer minimum distances. Check the focus range before planning a close product or table-detail shot. In dim light, choose exposure settings for both subject movement and camera support.

Built-in stabilisation helps reduce blur from camera shake. It can assist handheld shots of still subjects in fading light. It does not freeze a moving person, so choose a shutter speed that suits their movement. For a long fixed take, use support that can hold the complete camera setup.

The body is designed to resist dust and moisture. Use cover in persistent rain and keep the mount clean when changing lenses. Remove loose grit before wiping the front glass, and dry the exterior before storing equipment after a damp session.

There is no zoom lock switch. Check framing and focus before starting a take.

Inside are 18 elements in 12 groups, including aspherical and low-dispersion glass. Aspherical surfaces help correct distortion and spherical aberration, so doorframes and shelves at 28mm are less likely to bow.

Low-dispersion glass helps reduce chromatic aberration, the coloured fringes that can appear along high-contrast edges under stage lights. Focusing moves elements inside the barrel, so the outer length stays constant while you focus.