Canon CN-E30-300mm T2.95-3.7 L SP - Manual (Page 25)

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Reference Information
This lens is a full manual 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.