Macro Lens Macro lenses let us get much closer to a subject than a macro setting on a zoom lens . The optics in macro lenses are also designed to give superb results when shooting close-up pictures.
The challenge of tightly controlling lens MTF is further elevated in zoom lenses – because it is also an optical reality that MTF changes over the focal range of the zoom lens . And again, the optical designers must mobilize further innovative optical design strategies to minimize these changes. The demands on 4K lens design are higher than that of HDTV lenses – because of the anticipated very high bar in image resolution expectations.
In this chapter we will take a look at a particular aspect of the design criteria for the new Canon cine zoom lenses . Because these lenses were born squarely within the new era of digital cinematography the goal of endowing them with full 4k optical performance made sense for two reasons: one, such high resolution would significantly benefit high-end 2k/HD digital cine cameras, and second, it would anticipate the now escalating emergence of 4k digital cine cameras.
