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The Pentax 55-300mm F4.5-6.3 ED PLM WR RE is a new variable aperture ultra telephoto zoom that is the first Pentax lens to use their new ‘Pulse Autofocus Motor’. Although it is a bit darker than the old 55-300, autofocus is much faster and virtually silent. Take a look at our samples to see how sharp this handy new zoom is.
See our Pentax 55-300mm F4.5-6.3 ED PLM WR RE sample gallery
Articles: Digital Photography Review (dpreview.com)