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<p>[QUOTE=&quot;physics-fan3.14, post: 4138304, member: 19165&quot;]What he&#039;s saying is, the high points are a very small area and if there&#039;s just a bit of wear, it may be difficult to see (especially in pictures). </p><p><br /></p><p>However, the fields are a wide open area. A bit of rub here will be seen as a much larger area of disturbance, and will be easier to see, especially in a picture. </p><p><br /></p><p>The &quot;protected areas&quot; he refers to are where the devices meet the fields - in the nooks and crannies around the stars or folds of hair or such. These protected areas of the fields are not the wide open fields where you&#039;ll see a disturbance, and so the luster will remain in these areas for a long time. Even as low as EF-40, you&#039;ll often see luster in the protected areas of the fields (not the devices, or high points).[/QUOTE]</p><p><br /></p>

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