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<blockquote data-quote="WayneF" data-source="post: 437498" data-attributes="member: 12496">Well, usually not much factor at f/8.&nbsp; <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite1" alt=":)" title="Smile&nbsp; &nbsp; :)" loading="lazy" data-shortname=":)" />&nbsp; It could be one more thing to keep up with, but we had fewer things to worry with back then.I guess I think it is about lens design.&nbsp;&nbsp; Zooms were just starting to be casually accepted in 1970 (but not for serious purposes yet), and there were only a few&nbsp; of them.&nbsp; A couple of Nikons were constant aperture, but the state of the art then was not high, and these did this then by limiting zoom to moving only one group of glass. There were a couple of others that zoomed two or more groups, which were better corrected for sharpness, but aperture varied with zoom.&nbsp; Esp for zooms, design was very difficult before computers to do it.&nbsp;But... we've come a long way in 45 years. My opinion is that todays $1600 - $2000 f/2.8 zooms are optically as good as primes.&nbsp; Costly maybe, but very convenient, and impressively good.</blockquote>

[QUOTE="WayneF, post: 437498, member: 12496"] Well, usually not much factor at f/8. :) It could be one more thing to keep up with, but we had fewer things to worry with back then. I guess I think it is about lens design. Zooms were just starting to be casually accepted in 1970 (but not for serious purposes yet), and there were only a few of them. A couple of Nikons were constant aperture, but the state of the art then was not high, and these did this then by limiting zoom to moving only one group of glass. There were a couple of others that zoomed two or more groups, which were better corrected for sharpness, but aperture varied with zoom. Esp for zooms, design was very difficult before computers to do it. But... we've come a long way in 45 years. My opinion is that todays $1600 - $2000 f/2.8 zooms are optically as good as primes. Costly maybe, but very convenient, and impressively good. [/QUOTE]

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