The Tamron 35-100mm f/2.8 Di III VXD lens represents a distinct shift in zoom design, targeting photographers who prioritize compactness and image quality over an expansive focal range. Weighing just 565 grams for the Sony FE version, this optic is less expensive and more compact than the well liked 35-150mm. It was tested on a Sony A7R III body across Yorkshire locations like Whitby and Hutton‑le‑Hole, subjecting the weather‑sealed construction to rain and sun. The result is a fast, constant aperture lens that fits easily into a bag.
Handling and Design
The lens features a bayonet petal hood that locks in securely without a catch. It houses a 67 mm filter thread and a front element treated with fluorine coating to repel dust and moisture. Tamron has included weather sealing, which held up well during tests in the rain. The body measures 80.6 mm × 119.2 mm for the FE model. The zoom ring extends the lens slightly, yet it maintains a balanced feel on the camera. Focus operation uses Tamron’s VXD motor, which is described as virtually silent and accurate. Manual focus resistance feels right, and there is a three‑position switch for custom settings. Closest focusing distance reaches 0.22 m at 35 mm for a 1:3.3 magnification.
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Tamron included a USB‑C port and Bluetooth connectivity via the TAMRON‑LINK device. This allows firmware updates and remote operation through the Tamron Utility App. The optical construction contains 15 elements across 13 groups, including one XLD element and three aspheric elements. Aperture blades number nine, creating a rounded shape that aids bokeh quality. When mounted on the A7R III, the combination feels smooth and faultless. It also functions on crop‑sensor bodies, though the effective range becomes 52.5‑150 mm.
Optical Performance
For general shooting, it works well and produces some gorgeously crisp, colourful images.
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Bokeh quality is a standout feature. The out‑of‑focus backgrounds appear smooth and natural without any jagged edges. Achieving this level of smoothness while maintaining high sharpness on the focused plane requires careful engineering, a feat Tamron appears to have mastered here. The lens produces colorful, crisp images that are suitable for events, portraits, and even flat documents.
For users carrying this specific lens on a camera, the utility is immediate. When traveling, the trade‑off for a lighter bag often feels worthwhile. The restricted range forces a certain discipline in framing, which can lead to more deliberate composition rather than relying on zooming to solve every compositional issue. It effectively replaces the need to carry two separate lenses in many situations, offering a singular tool that performs well in varying lighting conditions without the bulk of larger zooms.
