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	<title>DSLR - Pentax Body &#187; aperture</title>
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		<title>Lens basics &#8211; f-numbers, aperture, speed etc</title>
		<link>http://www.pentaxbody.com/beginners-guide/lens-basics-f-numbers-aperture-speed-etc</link>
		<comments>http://www.pentaxbody.com/beginners-guide/lens-basics-f-numbers-aperture-speed-etc#comments</comments>
		<pubDate>Thu, 26 Feb 2009 06:00:59 +0000</pubDate>
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				<category><![CDATA[Beginners Guide]]></category>
		<category><![CDATA[35 mm equivalent]]></category>
		<category><![CDATA[aperture]]></category>
		<category><![CDATA[focal lenght]]></category>
		<category><![CDATA[Lens basics]]></category>
		<category><![CDATA[Pentax body]]></category>
		<category><![CDATA[Pentax lens]]></category>
		<category><![CDATA[shutter speed]]></category>

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. . All that you need to know before you buy a lens: Before you make a decision about buying a lens (and to understand how photos are affected by various settings), you need to understand the basics. If you don&#8217;t understand something, just keep reading as it will become clearer towards the end. Types [...]]]></description>
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