The latest 85mm DI VC F/1.8 lens from Tamron gets a very detailed review from Christopher Frost.
The Tamron SP 85mm f/1.8 VC is the latest variant of the new SP line. It is affordable but has a number of optical flaws and a consumer grade build, while the other is an f/1.4 or f/1.2 premium lens that costs four to five times as much. Tamron is targeting the middle ground and the many photographers that want a lens with premium performance without paying a premium price.
Spec for the Tamron SP 85mm f/1.8 VC:
Focal Length 85mm
Maximum Aperture F/1.8
Minimum Aperture F/16
Diagonal Angle of Vie 28°33′ (for full-frame format)
18°39′ (for APS-C format)
Lens Construction 13 elements in 9 groups
Minimum Object Distance 31.5″
Max. Mag. Ratio 1:7.2
Filter Diameter Front: 67mm
Overall Length 3.5″
Maximum Diameter 84.8mm
Aperture Blades 9 (circular diaphragm)
Image Stabilization Performance 3.5 stops
Weight 23.3 oz (650.54g)
The Tamron SP 85mm F/1.8 is the first 85mm fast-aperture lens with effective image stabilization. The lens brings edge-to-edge viewfinder brightness for ease of composition and quality low-light performance. The fast aperture of the F/1.8 also offers the perfect balance of subject sharpness and bokeh, that dreamy blur which separates your portrait subject from the background.
The Tamron’s 85mm focal length is ideal for producing a pleasing image with true-to-life facial features in accurate proportion. The SP 85mm F/1.8 uses LD (Low Dispersion) and XLD (Extra Low Dispersion) glass elements in the optical design to minimize color fringing and to achieve sharp and clear image quality with high color fidelity The SP 85mm F/1.8 is the world’s first* lens with a fixed focal length of 85mm and a fast aperture of F/1.8 that’s equipped with the VC system. This technology makes it possible to take photographs handheld in dim light and to make optimal use of slower shutter speeds and increased depth-of-field without extreme increase of the camera’s sensor sensitivity (ISO equivalent).