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This is a varifocal lens.
• Focus will shift as you zoom so when are manually focusing you may
lose focus while zooming.
• This will often occur if you start on a wide angle and then zoom into
your subject. In this case, focus first completely zoomed into the
subject and then zoom out to start the shot.
• Remember that a smaller aperture opening (larger aperture number)
will give you a greater depth of field.
• A wide focal length will also give you a greater depth of field.
• Use focus peaking to confirm what is in focus.
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