Sony FE 100mm F2.8 Macro GM OSS

Sony built this prime for its E mount, and it covers the full-frame format. It arrived in 2025 and remains in production. The 100mm focal length and very close focusing make it a macro lens first, aimed at insects, plants, small products and studio detail work.

The same 100mm view and F2.8 maximum aperture also suit tight portraits, so one lens can serve two kinds of work. The trade-off is the fixed framing. You compose by moving, and the reward is frame-filling close focus on small subjects. Portrait sitters also get a comfortable working distance.

The lens weighs 1 lb 6.8 oz (646 g). It measures 5.82 in (147.9 mm) long and 3.2 in (81.4 mm) wide. The front accepts screw-in filters, which must match the lens's 67mm thread.

A 100mm focal length keeps more air between you and the subject than a short macro lens. The closest focus sits at 0.9 ft (26 cm) from the sensor. Wary insects, frogs and garden flowers get less disturbance. The extra room keeps your shadow out of the light, and there is space for off-camera light to reach the subject.

Maximum magnification reaches 1.4x, past the 1:1 life-size mark that defines true macro. Fine texture records larger than life, which suits jewellery, stamps and specimen work. Depth of field at that scale is extremely thin. Expect small apertures, careful focusing and a steady setup to become part of the routine.

The maximum aperture is F2.8. At 100mm that still throws a background softly out of focus, enough for head-and-shoulders portraits and plant studies. At close range the aperture serves light control more than blur. Depth of field, not lens speed, sets the working limits here.

Beyond close range, the 100mm view frames faces from a polite distance. Perspective stays natural, and there is room for lights around a sitter.

Built-in OSS steadies the camera during handheld work. The benefit shows most near 1.4x magnification, where a small wobble shifts the framing sharply. Handheld flower shots and quick field close-ups become more practical, and portraits at middle distance gain too.

The lens accepts Sony's SEL14TC (1.4x) and SEL20TC (2.0x) teleconverters. The 2.0x unit doubles the effective focal length, adding reach for dragonflies and other wary subjects that will not let you close in. Each converter costs some light, so bright conditions suit them best.

Weather sealing helps keep dust and moisture away from the working parts, a useful trait for dewy morning field work. A fluorine coating helps shed water and oil from the glass, so the front wipes clean easily after damp or muddy sessions.

Focusing happens inside the barrel, so the length never changes while you fine-tune focus, and nothing extends toward a live subject. Two aspherical elements help correct distortion and spherical aberration. Two low-dispersion elements help reduce colour fringes along high-contrast edges such as sunlit leaf rims.