Tamron 70-300mm F/4.5-6.3 Di III RXD A047

This Tamron telephoto zoom brings 300mm reach to full-frame mirrorless cameras. It comes in separate Nikon Z and Sony E versions, so pick the one made for your system. At 70mm it frames portraits and stage performances tightly. At 300mm it makes distant wildlife, birds and outdoor sport fill the frame.

The Nikon Z version was released in 2022 and remains in production. That Nikon Z body weighs 1 lb 4.5 oz (580 g), which keeps the carrying load low on long days. The trade-off is a modest maximum aperture and no built-in stabilization, so it suits daylight and steady handheld technique.

At 5.92 in (150.3 mm) long for the Nikon Z version and 3.03 in (77 mm) wide, it stays manageable on a mirrorless body. The 67mm front thread takes screw-in filters directly, so a polariser or ND filter needs no adapter ring.

The 70–300mm range handles most telephoto situations without lens changes. Around 70mm it suits candid portraits and stage work. The long end makes distant subjects large, so birds, surfers and field sport dominate the frame. The zoom also lets you recompose from one position, which helps when a hide or a boundary fence fixes where you stand.

Maximum aperture runs from f/4.5 at 70mm to f/6.3 at 300mm, so the long end needs good light. The short end is brighter, which helps as the afternoon fades. In weak winter light, expect higher ISO settings or a support to keep shutter speeds usable. Its optics specification score is 50/100.

Even at f/6.3, the 300mm setting compresses distance and softens far backgrounds. A perched bird or a striker at the edge of the pitch stands out clearly at full reach. Depth of field is also generous at long shooting distances, which helps keep more of the subject sharp.

The lens focuses down to 2.6 ft (80 cm), handy for a subject at a feeder or an enclosure rail.

The lens is weather sealed, which helps keep dust and moisture away from the internals. That design reduces the risk of dust and moisture getting in during outdoor shoots compared with an unsealed lens.

There is no built-in stabilization. At 300mm, small camera movements show up clearly, so use a fast shutter speed or a monopod for sharp results. Cameras with in-body stabilization lose less from this, but the lens itself offers no help.

A fluorine coating, which is designed to repel water and oil, is absent from the front glass.

This lens uses low-dispersion glass among its elements. The glass helps reduce chromatic aberration, where colours focus at slightly different points and leave purple or green fringes along high-contrast edges. On a backlit bird against a pale sky, such fringing would show up most.

Focusing moves internal groups rather than the whole barrel.