In all honesty, this lens is completely unprofessional. Use it on vacations to snap images of your loved ones, your kids, and the sights along the way. excellent for video production. However, I would not suggest it for serious business photography. Because of the blurriness and the shaky autofocus. Maintaining an aperture of 2.5 to 2.8 will allow you to work with it. Then autofocus's sharpness and precision will be satisfactory.
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