Some zoom lenses change aperture when zooming in and out. (e.g. f:3.5 to f/5.6). This can result in bright enough images when zoomed out, but too-dark images zoomed in.
an extension of MCS classes
an extension of MCS classes
Some zoom lenses change aperture when zooming in and out. (e.g. f:3.5 to f/5.6). This can result in bright enough images when zoomed out, but too-dark images zoomed in.