Originally posted by jonmarsh For close up work the 120 has a shallow depth of field with large apertures- try stopping it down a bit more. I only rarely use it for macro work, but find that's desirable when I do... it's such a great landscape lens!
I agree on stopping down to f16 or f22, not sure if it will cause diffraction at that aperture, for max depth of field for macro work. A 120 f4 produces sharp images and taking centre point as focus area, the edges is expected to be out of focus, hence blurred. Down side of this macro lens with 645Z is the weight. Adding a flash light, wembly macro bracket, total weight near 3KG, making hand held almost difficult for me.
A120 f4, f11, iso 400. tripod support, flash light used. often camera and lens supported on 2 legs. Without a doubt, A120 is a sharp lens. I do not own the 90mm. shot captured at max 1:1 magnification.
marcus