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			Someone more knowledgeable will be along.
 The 6" is only a 4 level Gray scale .
 That is not much for pictures.  white(ish), Lt. Grey, Dk. Grey, Black.
 Any other levels encoded in the image must be interpolated and rendered as one of the above. 4 levels should provide clear text, but limited images.
 
 the 5" has 8 levels and does just OK on images.  Letters (Text) are Crisp.
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