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The lens that focuses itself

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    LenShepherd
    LenShepherd e2 Member 62515 forum postsLenShepherd vcard United Kingdom
    26 Apr 2009 - 10:27 PM

    Two prime lenses of this type made it into production about 25-30 years ago - an 80mm f2.8 and a 200mm f3.5 for the "AF" version of the F3.

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    26 Apr 2009 - 10:27 PM

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    cameracat
    cameracat  108578 forum posts Norfolk Island61 Constructive Critique Points
    27 Apr 2009 - 1:35 AM

    Awesome, Nikon ahead of the game back then too....Wink

    cambirder
    cambirder  107202 forum posts England
    27 Apr 2009 - 3:14 PM


    Quote: Awesome, Nikon ahead of the game back then too..

    I don't think so, I think Pentax were the first into the market with AF lenses.

    I'm glad things have moved on a bit, I remember those clonking great big Canon FD auto focus lenses. Like having a normal lens with a small brick attached.

    spaceman
    spaceman  105169 forum posts Wales3 Constructive Critique Points
    27 Apr 2009 - 5:57 PM

    Ah yes, the calamitous Canon T80. One of the shortest-lived cameras ever.

    ElSid
    ElSid  6 United Kingdom
    28 Apr 2009 - 3:13 PM


    Quote: Ah yes, the calamitous Canon T80. One of the shortest-lived cameras ever.

    I have one of those... and it still works despite being more than a bit on the slow side.

    One advantage the T80 has over modern AF cameras is the provision of a split image range-finder.

    LenShepherd
    LenShepherd e2 Member 62515 forum postsLenShepherd vcard United Kingdom
    28 Apr 2009 - 8:31 PM

    If we are going to argue about who did what when the lens illustrated on the OP was demonstrated at Photokina nearly 40 years ago in 1971.
    It's size, weight and slow AF prevented it reaching the world market.
    It was another 12 years in April 1983 before Nikon introduced a more compact version of the 80mm. It took only 0.6 seconds to focus from infinity to it's minimum focus of 1 meter - not bad even by today's AF speeds.
    Other manufacturers, including Olympus, introduced early AF lenses in the early 1980's and Nikon may well have been beaten for an early production lens.
    The 1971 working prototype is probably the first known AF lens for an interchangeable lens SLR.

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