Tamron 100-400mm f/4.5-6.Three Di VC USD overview

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Tremendous-telephoto zooms have grown in recognition over the previous few years, Tamron’s newest 150-600mm G2 being a superb instance. The lens is hard and well-built, and delivers superb all-round efficiency together with spectacular picture high quality. The one actual draw back is that it’s a usually massive and hefty lens, measuring 260mm in size and weighing over 2kg.

Going toe to toe with Sigma’s already well-established 100-400mm ‘Contemporary’ lens, this Tamron 100-400mm for Canon and Nikon DSLRs reins within the quantity of super-telephoto attain, enabling it to be a extra manageable 199mm in bodily size and barely greater than half the burden. As such, it ideas the scales at 1,135g for the Canon-mount version, and 1,115g for the Nikon-fit model. The upside is that It’s a lot much less of a pressure for extended intervals of handheld capturing, and simpler to easily carry round.


  • Incorporates a totally inner focusing mechanism
  • Ring-type ultrasonic autofocus
  • VC (Vibration Compensation) optical stabilization system

Like most super-telephoto zooms with a variable moderately than ‘constant’ aperture score, the Tamron has a totally inner focusing mechanism, so the entrance aspect neither rotates nor extends throughout focusing. Equally usually, its bodily size almost doubles when zooming to the longest focal size. So whereas the lens is fairly compact for stowage and carrying round, it’s nonetheless fairly massive when capturing at or close to the longest zoom setting.


Focal size: 100-400mm

Mount: Canon, Nikon

Filter dimension: 67mm

Max aperture: f/4.5-6.3

Most magnification: 0.28x

Dimensions: 86 x 199mm

Weight: 1,135g (Canon) 1,115g (Nikon)

The optical path consists of three LD (Low Dispersion) components to spice up sharpness and scale back coloration fringing. Tamron’s ‘eBAND’ and nano-structure coatings are additionally available to attenuate ghosting and flare. Different function highlights embody ring-type ultrasonic autofocus, with the same old handbook override and a spotlight distance scale beneath a viewing panel. There’s additionally a VC (Vibration Compensation) optical stabilization system and, not like the stabilizers fitted to most Tamron lenses, this one has switchable static and panning modes.

An electromagnetically managed diaphragm is used within the Nikon in addition to the extra typical Canon mount model of the lens. This helps to make sure publicity consistency in steady capturing mode, however makes aperture management unavailable in a few of Nikon’s older DSLRs.

Optionally available extras embody an own-brand Tamron 1.4x tele-converter, the usage of which maintains the supply of autofocus in DSLRs that assist AF at an aperture of f/8. There’s additionally a TAP-in Console (£79/$59)for making use of fine-tuning and firmware updates, and a usually dear tripod mount ring (£110/$129), however a minimum of the latter is immediately Arca-Swiss suitable.

Construct high quality and dealing with

  • Construct high quality is superb
  • Dealing with may be very refined
  • Outer barrel is comprised of magnesium alloy

Regardless of the cheap asking worth, construct high quality is superb. The principle part of the outer barrel is comprised of magnesium alloy and feels very sturdy, and the lens options weather-seals and a fluorine coating on the entrance aspect, which repels moisture and grease, and eases cleansing. 

Dealing with may be very refined, with a smooth-action, precision really feel to the zoom and focus rings. Our overview pattern didn’t undergo from any zoom creep in any way, however a zoom lock change is fitted nonetheless. Further switches are available for the dual-mode VC system, and for AF/MF/Restrict. The autofocus vary limiter is cleverly applied, its ‘Limit’ place enabling the other sector of the autofocus vary to be locked out, relying on whether or not a in need of lengthy focus distance is in use when the change is activated.


  • AF system is super-fast and constantly correct
  • Distinction is superb all through
  • Centre-sharpness is moderately higher than Sigma rival

Thanks partially to twin microprocessors and built-in digital sign processing, the autofocus system is super-fast and constantly correct. It’s additionally whisper-quiet, which could be a bonus when photographing wildlife. Tamron’s VC system is usually efficient, giving a profit equal to round 4 f/stops. It makes an enormous distinction in getting constantly sharp pictures, particularly on APS-C format DSLRs, the place the ‘effective’ zoom vary is boosted to 160-640mm (Canon) or 150-600mm (Nikon). 

Distinction is superb all through your complete zoom vary, even when capturing wide-open, as is sharpness throughout a lot of the body. Centre-sharpness is moderately higher than from Sigma’s competing 100-400mm lens at any given focal size. Nevertheless, when capturing on a full-frame moderately than an APS-C format digicam physique, there’s a extra noticeable drop within the Tamron’s corner-sharpness. Coloration fringing is minimal all through the zoom vary, and the contact of pincushion distortion at 100mm solely will get slightly worse at medium to lengthy zoom settings.


Tamron’s up to date G2 (Technology 2) lenses have actually impressed us not too long ago, particularly its 70-200mm f/2.Eight zoom, which is solely fabulous. This primary-edition 100-400mm performs nicely straight out of the blocks, packing actual punch right into a refreshingly light-weight construct.

The weather-sealed building is of superb high quality all through, dealing with is refined, and all areas of efficiency are spectacular. The autofocus and stabilization methods are each glorious, and relating to outright picture high quality, the Tamron places loads of larger, dearer lenses within the shade. It’s a steal on the worth.

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