In our testing, we note around 2 and a half stops of hand-holding improvement check out our IS Test tab for more detail. While the NEX series of camera includes sensor-shifting image stabilization, the A7 series of camera does not, so image stabilization is possible regardless of the platform. Sony includes its OSS ("Optical Steady Shot") image stabilization technology in the lens. The ALC-SH138 lens hood is a bayonet-mounted round hood that's 2 1/4" long, providing a generous shade to prevent lens flare. In this mode, the ring has hard stops on the infinity and closest focus settings, and has a generous 150 degrees of travel between these points. The focusing ring has two settings: pushed away from the camera body, it is in autofocus mode pulled towards, it is in fully manual mode. The focusing ring is 1 1/4" wide, composed of a dense plastic with raised plastic nubs. Also present is a focus hold button, which allows the user to lock in focus while recomposing the scene. The fit and finish of this lens is really nice: the lens has a distance and reproduction scale adjacent to the focus ring, as well as the focus limiter function. That said, Sony's implementation of OSS suggests that it's envisioning photographers will leave their tripods at home when they use this lens. The plates have some amount of wobble when a plate is attached: a tripod socket on this lens would have been a real help. The size works against it for macro work, as the NEX and A7 series of camera have such a tiny body area to lock on a quick release plate. It's a bit larger than other prime lenses in the system and heavier (it's around 600 grams, or over 21 ounces). The Sony FE 90mm ƒ/2.8 Macro OSS is a sturdy and well-built lens, with a metal construction. The first setting limits the range to macro (between 11'' and 20'') while the second setting limits the range beyond macro (20'' to infinity). The lens is equipped with a focus limiter switch with three settings: one for unrestricted autofocus operation, and two settings which limit the range of autofocus movement and thus speed up the operation. The lens is purpose-built for macro work, so it's no surprise that it excels here, offering full 1:1 reproduction at its minimum close-focusing range of 11" (28 cm). The focus action is all internal, so there is no change in the lens' size as it focuses the front element doesn't rotate, so attached 62mm filters will stay where they are. On the A7R, there is a tiny bit of barrel distortion in the corners (almost +0.2%) but this is a very small amount that's easily correctable.ĭespite the fact that it's a macro lens, the Sony 90mm ƒ/2.8 Macro focused quite quickly, taking around a second for the lens to focus its range from infinity to close-focus. The Sony 90mm ƒ/2.8 macro is optimized to produce almost no distortion the numbers are essentially zero when mounted on the NEX-7. At any other setting, light falloff is inconsequential. This light falloff reduces dramatically when stopped down to ƒ/4 (where there is just over a third of a stop of light falloff). At ƒ/2.8, the corners are 3/4 of a stop darker than the center. At any other setting there is no light falloff.Ĭorner shading is a bit more prominent for the lens when mounted on the full-frame A7R. Light falloff is essentially a non-issue for the 90mm ƒ/2.8 macro when mounted on the sub-frame NEX-7 the only corner shading of note is found at the ƒ/2.8 setting, where the corners are a 1/4-stop darker than the center. Both the NEX-7 and A7R employ in-camera correction for chromatic aberration, corner shading and distortion, and to give you a fuller picture of lens performance we've shot our sample images with and without these settings enabled. There's little chromatic aberration to speak of from both the test results and looking at the sample images. Mounted on the full-frame A7R, there's a trace of corner softness at ƒ/2.8, but stopping down to ƒ/5.6 provided incrementally better corner sharpness until it became tack-sharp.ĭiffraction limiting begins at ƒ/11, but you'll be hard-press to notice any impact on sharpness until ƒ/16, where generalized softness begins to set in. When used on the NEX-7 with its APS-C sensor, the images shot were tack-sharp from ƒ/2.8 onward. Our review sample of this lens proved to be exceptionally sharp, even when used at its widest aperture setting of ƒ/2.8. The lens is scheduled to start shipping in July, 2015, ships with a round lens hood, and will be priced at approximately $1,100. The Sony FE 90mm ƒ/2.8 Macro G OSS will fit on both APS-C and full-frame E-mount Sony bodies on the NEX-7, the lens provides an effective field of view of around 135mm.
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