Canon CN20x50 Series Operation Manual page 32

Reference Information
This lens is a lens for shooting movies.
• This lens is developed primarily for movie production, and have a color balance typical for movies. This means that
the color reproduction is warmer than that of EF lenses which are basically used to shoot still images. Therefore,
when using both types of lens together, adjust the color balance (redo the white balance etc.) as necessary.
• In general, the depth of field becomes shallow and the focusing range becomes extremely narrow near the widest
aperture and when shooting a subject at close range. In addition, this tendency increases for lenses with longer focal
lengths. When shooting images, carefully check the focusing condition using the zoom mode of the finder or other
means, and shoot a sufficient number of test images before performing focus operations.
(for EF mount Lens only)
• The T-numbers of this lens are indicated on the iris ring of the lens. On the other hand, the iris information from this
lens to the camera uses the F-number in consideration of use together with conventional EF lenses. Therefore, the
camera side displays a different value (F-number) from the indication on the iris ring of the lens.
• Information of the focal length displayed on the camera side omits the figures below the decimal point.
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