
160 Chapter 7
are issues. If you want clean images, use clean
lenses. Matte boxes and lens hoods are designed
to block sunlight or stray light from lamps from
reaching the front element of the lens. Lens hoods
are usually tailored to the eld of view of a lens,
matte boxes are built for general are protection,
but they are also usually accompanied by a set of
hard mattes tailored to specic focal lengths. One
cautionary note when using hard mattes in low
light circumstances; they can act as a secondary
aperture resulting in square or odd shaped bokehs.
After lighting your scene, walk around to the ...