&lt;h4&gt;Optional semi long zoom PRJ lens&lt;/h4&gt;&lt;p&gt;To support optimal projector installation and performance in a wide range of environments seven types of optical lens ranging from short-throw to long-throw lens are available with glass materials for better focus and large apertures for a brighter image. The lenses are made in Japan to ensure the highest quality.&lt;br /&gt;&lt;br /&gt;&amp;bull; Throw Ratio: 2.22 ~ 3.67 XGA&lt;br /&gt;&amp;bull; Throw Ratio: 2.30 ~ 3.81 WUXGA&lt;br /&gt;&amp;bull; Throw Ratio: 2.33 ~ 3.86 WXGA&lt;/p&gt;&lt;table class=features&gt;&lt;thead&gt;&lt;tr&gt;&lt;th colspan=2&gt;Features&lt;/th&gt;&lt;/tr&gt;&lt;/thead&gt;&lt;tbody&gt;&lt;tr&gt;&lt;td class=feature&gt;Lens Throw Ratio&lt;/td&gt;&lt;td&gt;&lt;li&gt;2.22 ~ 3.67 - XGA &lt;li&gt;2.30 ~ 3.81 - WUXGA &lt;li&gt;2.33 ~ 3.86 - WXGA  &lt;/td&gt;&lt;/tr&gt;&lt;/tbody&gt;&lt;/table&gt;