There is no magical size/weight advantage

Started Mar 5, 2014 | Discussions thread
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Re: There is no magical size/weight advantage
In reply to IVN, Mar 5, 2014

Thanks, IVN. I loaded the blog page linked on Nikon rumors in Chrome and translated it (see HERE). There is an example provided that includes size and (if I am reading it correctly) suggests this example lens would be about 9-10 inches in length, which is about double the length of the current Nikon 70-300. The blog page reads:

  • Patent Publication No. 2013-210475
    • Publication date 2013.10.10
    • Filing date 2012.3.30
  • Example 1
    • Focal length f = 72.10-135.70-291.00mm
    • Fno. 4.13-4.5-5.77
    • Angle of view 2ω = 13.0-6.9-3.2 °
    • Image height Y = 8.19mm
    • 229.4-235.8-234.5mm in total length
    • 20 pieces of 13-group lens configuration
    • Six ED glass
    • Three fluorite

I pulled a copy of the patent application (unfortunately, it appears to have been published only in Japan and I don't read Japanese) and note that there appear from the tables to be other examples, one of which seems from its dimensions to be collapsible, and that they show it in a figure mounted to an SLR, not a MILC (I don't read much into this).

My bottom line: it's speculative that it's the lens that's speculated to be in development.  As this is speculation added to speculation, I think all bets are off and it will pay to see what (if any) facts emerge.

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