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<blockquote data-quote="M.Hinch" data-source="post: 5307" data-attributes="member: 1739"><img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite5" alt=":confused:" title="Confused&nbsp; &nbsp; :confused:" loading="lazy" data-shortname=":confused:" /> Would someone be so kind as to explain the scale. I have tried several sites, and all I end up with is <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite5" alt=":confused:" title="Confused&nbsp; &nbsp; :confused:" loading="lazy" data-shortname=":confused:" />. Or head me in the right direction to a site that is not so technical. I know it has to do with the lens, and maybe the sensor on my D90 and the type of lens that I may be using at the time. Oh ya and the Aperture, and distance. I have printed out a copy of several focal lengths based on my D90 which I found on a site.&nbsp;Distance- Near----- Far---- Focal Length 18mm---- F1.4&nbsp;1 foot--- 0'11.7&quot;--- 1'0.3&quot;2 feet--- 1'10.8&quot;--- 2'1.3&quot;3 feet--- 2'9.4&quot;---- 3'3.1&quot;&nbsp;&nbsp;Now is the information based with just the lens and no filter? If so what happens when you use a neutral density filter or a polarized filter. Do you step down the info to a 2.8?&nbsp;I realize this may be asking alot of someone, but I would really appreciate it.&nbsp;Thanks Michael.</blockquote>

[QUOTE="M.Hinch, post: 5307, member: 1739"] :confused: Would someone be so kind as to explain the scale. I have tried several sites, and all I end up with is :confused:. Or head me in the right direction to a site that is not so technical. I know it has to do with the lens, and maybe the sensor on my D90 and the type of lens that I may be using at the time. Oh ya and the Aperture, and distance. I have printed out a copy of several focal lengths based on my D90 which I found on a site. Distance- Near----- Far---- Focal Length 18mm---- F1.4 1 foot--- 0'11.7"--- 1'0.3" 2 feet--- 1'10.8"--- 2'1.3" 3 feet--- 2'9.4"---- 3'3.1" Now is the information based with just the lens and no filter? If so what happens when you use a neutral density filter or a polarized filter. Do you step down the info to a 2.8? I realize this may be asking alot of someone, but I would really appreciate it. Thanks Michael. [/QUOTE]

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