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<blockquote data-quote="Brian" data-source="post: 246170" data-attributes="member: 17621">The Nikkor-S 58/1.4 was Nikon's first &quot;Super-Speed&quot; SLR lens. 58mm focal length was required to provide enough back-focus to clear the meter without resorting to a retto-focus design, as was done with the Nikkor-S 50/2. The design is a classic Planar (1-2-2-1, 6-elements in 4 groups) with the front element split into two elements of lesser power, (1-1-2-2-1 configuration). This is similar to the Leica Summarit and 1st version Summilux, which split the rear element of a classic Planar for a 1-2-2-1-1 configuration. The rendering of the Nikkor 58/1.4 and Summarit 50/1.5 is similar, lower contrast and swirly Bokeh.Nikkor-S 58/1.4, Wide-open on the Df.<a href="http://www.flickr.com/photos/90768661@N02/11917668483/" target="_blank"><img src="http://farm6.staticflickr.com/5484/11917668483_313407a084_o.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /></a><a href="http://www.flickr.com/photos/90768661@N02/11917668483/" target="_blank">DSC_0896</a>By F4, this Nikkor and the Summarit &quot;settle down&quot;.<a href="http://www.flickr.com/photos/90768661@N02/11918276506/" target="_blank"><img src="http://farm8.staticflickr.com/7421/11918276506_a45fedf704_o.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /></a><a href="http://www.flickr.com/photos/90768661@N02/11918276506/" target="_blank">DSC_0897</a></blockquote>

[QUOTE="Brian, post: 246170, member: 17621"] The Nikkor-S 58/1.4 was Nikon's first "Super-Speed" SLR lens. 58mm focal length was required to provide enough back-focus to clear the meter without resorting to a retto-focus design, as was done with the Nikkor-S 50/2. The design is a classic Planar (1-2-2-1, 6-elements in 4 groups) with the front element split into two elements of lesser power, (1-1-2-2-1 configuration). This is similar to the Leica Summarit and 1st version Summilux, which split the rear element of a classic Planar for a 1-2-2-1-1 configuration. The rendering of the Nikkor 58/1.4 and Summarit 50/1.5 is similar, lower contrast and swirly Bokeh. Nikkor-S 58/1.4, Wide-open on the Df. [URL="http://www.flickr.com/photos/90768661@N02/11917668483/"][IMG]http://farm6.staticflickr.com/5484/11917668483_313407a084_o.jpg[/IMG][/URL] [URL="http://www.flickr.com/photos/90768661@N02/11917668483/"]DSC_0896[/URL] By F4, this Nikkor and the Summarit "settle down". [url=http://www.flickr.com/photos/90768661@N02/11918276506/][img]http://farm8.staticflickr.com/7421/11918276506_a45fedf704_o.jpg[/img][/url] [url=http://www.flickr.com/photos/90768661@N02/11918276506/]DSC_0897[/url] [/QUOTE]

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