setting aperture造句

The Maxxum 7000, the most popular of the new Maxxums, introduced the innovation of arrow buttons for setting aperture and shutter speed, rather than a shutter speed dial on the body and an aperture ring on the lens.
The current line of Rodenstock enlarging lenses have removable click-stops for setting aperture in the dark, an illuminated f-stop display, and an aperture pre-set feature, which allows setting of the working aperture, and quick changing from full aperture to the working aperture, for easy focusing and framing.
It's difficult to find setting aperture in a sentence. 用setting aperture造句挺难的