New lens ordered

Discussion in 'Photography Beginners' Forum' started by tom.ganc, Sep 24, 2008.

  1. tom.ganc

    tom.ganc TPF Noob!

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    Hi there
    Today I have ordered new lens for my D40
    It is well known 50mm f1.8 D :boogie:
    I know it wan't autofocus on mine camera but it is not big deal.
    I can't wait to get my hands on it.

    Cheers
    Tom
     
  2. Chewbecca

    Chewbecca TPF Noob!

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    This will become one of your most favorite lenses. IF you don't mind manually focusing.
    It'll make you an expert at manually focusing, though, as long as you use it enough.:D

    Congrats! It was my first lens purchase (minus the kit lens that came with my D60).
     
  3. rubbertree

    rubbertree TPF Noob!

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    I just bought that lens last week. Love it!
     
  4. crashcart

    crashcart TPF Noob!

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    Same here; first lens I purchased (also minus the two lenses that cam with my D60.) I bought this lens at the B&H store in NYC about a month ago, and as far as bang for the buck, I don't think you can get better glass.
     
  5. manaheim

    manaheim Jedi Bunnywabbit Staff Member Supporting Member

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    Woot! Congrats!
     
  6. TamiyaGuy

    TamiyaGuy No longer a newbie, moving up!

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    Congratulations, man! I am sure you will absolutely love the nifty fifty. In my opinion, it just opens you up into a whole new world of photography. You begin to think what something might look like if the depth of field was measured in millimeters. Also, when stopped down to something like f/4-f/5.6, the lens is S.H.A.R.P.
     
  7. petercox

    petercox TPF Noob!

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    Congratulations on the purchase! You'll find it tough going at first with the manual focus and such a thin depth-of-field, but with practice it will become easier.

    I would recommend getting a split-prism focusing screen to replace the one in your camera - DSLRs just aren't designed to be manually focused and so the focusing screen tends to sacrifice manual focusing ability for brightness.

    I had one of this company's focusing screens on my 20D ages ago and was happy with it. The one downside is that any lens with a maximum aperture smaller than f/2.8 or f/4 will result in part of the prism blacking out. It's not a big deal, but something to be aware of.

    Split prism focusing screen

    Cheers,
    Peter
     
  8. hoboahoy

    hoboahoy TPF Noob!

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    Excuse me everybody here. I am interested in getting this lens too. Could you explain why you have to manual focus this lens? I'm reading the description of this lens at B&H site:

    Nikon Normal AF Nikkor 50mm f/1.8D "Autofocus" Lens

    It says "autofocus" in the description. If I use this lens on either Nikon D90 or D300, do I have to manually focus?
     
  9. Chewbecca

    Chewbecca TPF Noob!

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    No, because the D90 and the D300 have an in-body focus motor.
    The d40/d40x/d60 do NOT have an in-body focus motor, so for auto focus, they require the focus motor to be IN the lens.

    That's why it needs to be manually focused on those 3 cameras.:mrgreen:
     
  10. hoboahoy

    hoboahoy TPF Noob!

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    So if I use it on either D300 or a D90, then it's a fully auto focus. Ok. Thank you.
     
  11. hoboahoy

    hoboahoy TPF Noob!

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    Wait, I'm getting confused.

    If the camera body is the mechanism that does the actual autofocusing, why do they describe the lens being "autofucus"? I thought the lens is the one that has a motor to autofocus? I mean if you put any lens on D90 or on a D300, the cameras would autofocus anyway, right? I asked the same question before about Nikon D40 vs the Nikon lens 18-200mm VR to somebody. They said the 18-200mm VR can be used on D40 perfectly, and it does autofocus even though the D40 does NOT have a body motor, but the lens 18-200mm VR DOES have the internal motor. Is this info correct?

    Are you saying sometimes the camera body and the lens could both have its own AF motor? Then which motor are being used to autofucus if both the body & lens have a motor simultaneously? Sorry I'm getting confused.

    Anyway Tom congratulations. That's a good lens. I want that too.
     
  12. manaheim

    manaheim Jedi Bunnywabbit Staff Member Supporting Member

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    heh... this is funny because I never really stopped to think about how complicated this is, but it really is.

    Ok...

    Lenses are broken up into two major focus categories... auto-focus (AF) and manual focus (MF) (or, really... "with the absence of autofocus" :) ). AF lenses will, as is implied, do the focusing for you.

    In the AF category, there are two sub-categories... lenses that have a AF drive screw and are thus focused by the camera actually moving a little screw to adjust the focus... and lenses that have an AF motor built directly into the lens, such as HSM lenses.

    Cameras like the D40 and D60 require the latter type of the autofocus lenses because they have no autofocus drive screw.

    --- Only those who are not feint of heart should read further than this point --- :)

    Note that there are yet two more subcategory of AF lenses... and these overlap, so they are not mutually exclusive from the above AF subcategories.

    The first are AF lenses that allow small manual adjustments after the autofocusing takes place. This is a VERY nice feature and I don't believe that many lenses have this.

    (POSSIBLE MISINFORMATION ALERT!) The second are AF lenses that also allow manual focus. I'm not 100% sure on this one, but I do believe that there are AF lenses that do not allow manual focus at all. I'm actually expecting to be wrong on this one, so take it with a grain of salt. :) (enough disclaimers for you?) :lol:
     

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