Designed to produce crisp, high-impact close-ups and portraits, the new FE 90mm F2.8 Macro G OSS lens delivers an impressive blend of clarity, detail and smooth background
The first mid-telephoto macro lens for the α E-mount line, the FE 90mm F2.8 Macro G OSS features built-in Optical SteadyShot (OSS) image stabilization, allowing for pin-sharp images at up to 1:1 magnification, even when shooting handheld. The smooth, quiet Direct Drive SSM (DDSSM) mechanism drives two ‘floating' focus groups independently, ensuring extremely precise focus positioning that's crucial for macro photography.
The new macro lens maintains the same overall length at all focal distances – very helpful for macro shooting – and has a focus hold button and sliding focus ring that can instantly switch between manual and auto focus1. It is also dust and moisture resistant.
I'm definitely thinking about getting this and selling my current A-mount Sigma 105mm f/2.8 HSM Macro. Should be smaller with better performance.
But I wonder if the focusing will now be linear so you can rack-focus between two marks accurately. I hate that my 55mm f/1.8 FE has variable focus (1/4 slow turn on the focusing ring will hit different focus marks vs 1/4 fast turn)
Sony 90mm f/2.8 G OSS Macro is a superb addition to the E mount lineup,
http://www.lensrentals.com/blog/2015/05/sony-fe-90mm-f2-8-g-oss-resolution-test
Our review sample of this lens proved to be exceptionally sharp, even when used at its widest aperture setting of ƒ/2.8. When used on the NEX-7 with its APS-C sensor, the images shot were tack-sharp from ƒ/2.8 onward.
Centre sharpness remains high through from f/4to f/11, with f/16 and particularly f/22 being adversely affected by diffraction. The edges aren't quite as sharp as the center, with f/5.6-f/16 producing the sharpest results.
http://www.photographyblog.com/reviews/sony_fe_90mm_f2_8_review/
In terms of optical quality it is easily playing on the same levels as its DSLR counterparts. In terms of sharpness the Sony lens has probably surpassed them. The center quality is excellent at f/2.8 and extreme at f/4 and f/5.6. Furthermore the borders/corners are also impressive especially considering the high density sensor used for the tests. Lateral CAs are generally a non-issue.
The Sony FE 90mm f/2.8 G OSS macro performed great on the Sony A7R II already so it doesn't come as a surprise that it is even a bit better on an 24mp APS-C camera. In terms of sharpness the Sony lens is already impressive at f/2.8 and tack sharp across the image frame in the f/4-f/8 range .
It’s really difficult to find a fault with the 90mm f/2.8. Yes, we can find slight weaknesses by pixel peeping and measuring, but in terms of actual image results, I’m going to go out on a limb and say that you’re simply not going to be disappointed with the results this lens produces. They’re crisp, contrasty, and devoid of any significant visual problems.
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