Nikon D40 with 300mm lens AND teleconverter (Nikkor AF-STeleconverter TC-20E II)

Discussion in 'Nikon' started by Guest, Jan 9, 2008.

  1. You gots to pay if you wants to play! Some posers would love to drive a
    5-series BMW, but the dumb bastards don't have enough pocket change for a
    3-series. Same logic with Canon not putting spot metering in their earlier
    version dSLRs. You don't like what a certain model offers you step up to
    the next level and pay accordingly for it. Now stop you envious tantrums.





    Rita
     
    Rita Berkowitz, Jan 23, 2008
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  2. I agree that a lot of posers drive Beamers, same as guys posing as
    female when they post, "Rita".

    Canon's not offering spot metering on lower end DSLRs was their
    marketing/cost/profit determination. Of course, you're smarter than the
    entire Canon Camera dept.
     
    John McWilliams, Jan 23, 2008
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  3. BINGO! For a dumbass you can really yank a pearl of logic from your ass
    every once in a while. And how exactly is this different from Nikon's
    marketing wizards omitting an AF motor and supposedly lack of metering with
    older AI lenses. Explain it to Wolfie, he speaks your language.





    Rita
     
    Rita Berkowitz, Jan 23, 2008
  4. The D40 meters just fine with any Nikon or third-party lens (other than
    something goofy like a Lensbaby) on the market today that I know of. That's
    all the typical entry-level buyer of a D40 is likely ever to care about, and
    that's the buyer for whom the D40 was primarily designed.

    Owners or prospective buyers of older F-mount lenses are reasonably expected
    to do their homework before buying a D40.

    Neil
     
    Neil Harrington, Jan 23, 2008
  5. What's all this RFC stuff anyway? I presume you guys aren't talking about
    the Royal Flying Corps.

    [ . . . ]
    It may. But it probably doesn't "do" 50mm.

    Most 50mm lenses are not really 50mm f.l.; typically they're 52mm or so.
    Focal lengths of camera lenses are seldom the stated value.

    Neil
     
    Neil Harrington, Jan 23, 2008
  6. See, for example:

    http://www.ietf.org/rfc/rfc2821.txt

    David
     
    David J Taylor, Jan 23, 2008
  7. Neil Harrington, Jan 23, 2008

  8. You are no lady, sir.

    lsmft
     
    John McWilliams, Jan 23, 2008
  9. Pot:Kettle: Black.

    Hilarious that "Rita" would mention posing.

    lsmft
     
    John McWilliams, Jan 23, 2008
  10. So you are the head of the Microsoft marketing department,
    or can you poor dumb bastard not buy such a position from your
    pocket change? In which case you are a poser, Ritachen.
    Words you use, language not.
    You're the expert marketing intelligence idiot! You explain.

    -Wolfgang
     
    Wolfgang Weisselberg, Jan 24, 2008
  11. It does?
    Or does your definition of "something goofy" include anything
    not having Nikon electrical contacts and a CPU? Like ...
    older F-mount lenses?

    And why does it not meter a lens baby, an 500mm manual
    catadioptic lens and so on?
    Ah, yes.
    The D40 is designed for those who want a camera which _might_ be
    able to mount a half-dozen lenses --- but most buyers stay with
    the kit lens, anyway, so no need to change lenses. Most buyers
    don't really need the viewfinder ... well, so basically the D40
    is a bridge camera with SLR-viewfinder and a handful of lenses
    most people won't care about anyway.

    Good for Nikon, if it works for them.
    Ah, yes, I so do love the DLL-hell of Windows, I don't touch
    that kind of stuff any more. I want to do photography, or at
    least snap shooting (noone ever accused me to be a great artist).

    If I want to be in a passage of twisting interdependencies, likely
    to be eaten by a grue, I'll play adventure. But if people derive
    masochistic pleasure from these things, who am _I_ to tell them
    they shall not!

    -Wolfgang
     
    Wolfgang Weisselberg, Jan 24, 2008
  12. Nope.
    RFC stands for "Request For Comments" and is the very very modest
    name of the documents that define the Internet. Literally.
    The Internet protocol, NNTP, Email, HTTP, MIME and many more
    of the protocols that allow your computer to interact with the
    network and do things thereon are defined there.

    Sort of like "Gods' manufacturer's guide and exact technical
    information" for the Internet.
    Oh, well, I am quite sure that at one fous setting it only has
    only one focal length ...

    -Wolfgang
     
    Wolfgang Weisselberg, Jan 24, 2008
  13. Guest

    Guest Guest

    canon's chuck westfall explains the problem in detail:

    <http://digitaljournalist.org/issue0508/westfall.html>

    Q: My EOS 20D in aperture priority mode with manual diaphragm lenses
    exposes properly at f/2.8 and f/4, begins to overexpose from f/5.6 to
    f/8, then comes back down around f/11. How can this be possible? Is
    there a solution besides using an external meter?

    A: The EOS 20D focusing screen is optimized for superior brightness
    at moderate apertures from about f/3.5 and smaller, compared to
    conventional ground glass designs. This makes the viewfinder image
    brighter and easier to focus manually at those moderate apertures,
    but the trade-off is that it passes disproportionately more light to
    the metering system. When a Canon EF lens is mounted to an EOS
    camera, a variable exposure compensation factor (a program curve, not
    just a fixed compensation factor) for this phenomenon is fed through
    the system in order to provide correct metering for all apertures.
    However, when using a non-coupled manual diaphragm lens as you
    describe, no such communication takes place, so the responsibility
    for exposure compensation reverts to you. It's unnecessary to use an
    external meter. Instead, you can take a series of test shots at the
    working aperture(s) you plan to use, then analyze the test photos to
    determine the most desirable exposure compensation factor for each
    aperture. The 20D's auto exposure bracketing (AEB) function speeds up
    the process of taking the test photos, and you can use the Info
    palette in Photoshop to determine the most accurate exposure. If you
    can standardize on one or two particular apertures you plan to use
    (for maximum sharpness, desired depth of field, etc.), it will
    simplify the calibration process by eliminating the need for tests at
    other apertures.

    to quote you, "I don't forgive not metering" to which i add "correctly."
    what's odd about it? and why does it even matter?
    i ran tcpdump while posting and you're right, it does add a line break
    when wrapping outgoing text. however, it's not noticable in urls
    because both newsreaders (one gui, one text based) as well as email and
    even text editors that i use all detect urls, regardless of embedded
    line breaks and even without delimiters most of the time, so at the end
    of the day, it doesn't really matter if there's an extra line break or
    not.
    nikon could make a 50mm f/1 if they thought it would be profitable, but
    as canon found out, it probably isn't a worthwhile venture. nikon
    users have modified even faster lenses to nikon mounts (see below for a
    42mm & 62mm f/0.75), so clearly, there is very little that precludes
    making one, other than a compelling business model.

    <http://www.muellerworld.com/exhibits/fast_lens/>
     
    Guest, Jan 24, 2008
  14. Guest

    Guest Guest

    not quite. there are roughly *fifty* lenses that will autofocus on the
    d40 and focus confirmation works with the rest of them.
     
    Guest, Jan 24, 2008
  15. BINGO! You do forget that this concept is lost on most Canon shooters since
    they lack the level of intelligence required to do "homework" that is needed
    for an educated purchase.





    Rita
     
    Rita Berkowitz, Jan 24, 2008
  16. Maybe you have to step up to the next model and pay more for that feature?
    It's not a difficult concept for most people to understand.





    Rita
     
    Rita Berkowitz, Jan 24, 2008
  17. Wolfie doesn't care. He'd rather use that substandard consumer grade Canon
    crap.





    Rita
     
    Rita Berkowitz, Jan 24, 2008
  18. Sounds like a piss poor design to me! In Canon's defense, at least the 20D
    users don't get "ERROR 99" messages when using manual lenses.





    Rita
     
    Rita Berkowitz, Jan 24, 2008
  19. Older F-mount lenses are not "on the market today" in the sense that I'm
    using that term. As I pointed out:
    Why ask why? It doesn't need to. The D40 is designed primarily for the
    entry-level buyer who is very unlikely to be interested in such lenses.
    Lensbabies and mirror lenses are for a tiny fraction of one percent of users
    who wouldn't be buying a D40 in the first place.
    Look again. All of Nikon's currently catalogued lenses will mount and meter
    just fine on a D40, all the recent ones will autofocus on it too, and that's
    rather more than "a half-dozen." See for yourself:
    http://www.nikonusa.com/template.php?cat=1&grp=5

    See anything there that won't mount and meter on a D40?

    But the capability to do so is always there. Most Ferrari buyers are never
    going to enter Le Mans either.

    Now you've crossed the line from silliness to lunacy. No offense.

    Neil
     
    Neil Harrington, Jan 24, 2008
  20. Ah. I knew there must be an explanation.

    Neil
     
    Neil Harrington, Jan 24, 2008
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