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There are almost no generalizations about how to achieve the 3D look that hold up. Why? Because there are 3D-looking images taken with $3000 Zeiss lenses and with $100 kit lenses. There are 3D-looking images with infinity focus and a huge DOF, and others with a tiny DOF. There are 3D-looking images taken on point and shoot cameras, and others taken on 20x24" ultralarge format view cameras.
In my mind, and as I stated a few times in that archived thread, there are two important features to a 3D look.
One is textural detail. This often comes from a combination of microcontrast and directional lighting. Good lenses will do better than poor lenses at this, but picking your lighting is the critical step.
Two is suggestion of depth. This can come from a shallow DOF, but it can also come from lines that lead the viewer into the photo, or simply from well placed foreground-middleground-background objects.