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because it turns out
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it's not very easy to manufacture batteries well.
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The Polaroid SX-70 had gained enormous ground
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on conventional photography on the quality dimension.
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It was a lot better than the old Polaroid,
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but it was still--nobody drunk or sober would argue
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that the pictures produced by the Polaroid SX-70 were
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as good as those produced by a conventional single SLR,
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single lens reflex 35mm camera with competent processing.
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They were in a position
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where they had a deficit on the quality side,
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which they never actually overcame.