The 90mm f/28 G OSS Macro uses a very advanced internal AF, and like many new AF macro lenses, and does not change barrel length when focused close The 1986designed (by Minolta) Sony SAL 100mm f/28 Macro also uses hybrid IF and an inset front group to reduce the physical extension to 50mm instead of 100mm at 11Sony 90mm Macro Sharpness The Sony 90mm f/28 Macro G Lens is a "holy sh*t" lens As in, "holy sh*t, I can't believe how good these pictures are" If you shoot a 61 megapixel Sony R IV or a 42 megapixel R III, you will love pixel peeping Feel free to zoom in to 100% you'll be blown away by the detailDiscover the FE 90mm F28 Macro G OSS from Sony & explore all the α Lenses features Sony Fe 90mm F 2 8 Macro G Oss Full Frame E Mount Macro Lens Sony fe 90mm f/2.8 macro g oss lens nz