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Thread: In-body autofocus ?

  1. #1

    Smile In-body autofocus ?

    Nikon D5100 does not have in-body autofocus motor. If there is no in-body autofocus, that means have to manually focus all the time??

    Does Canon EOS 600D have in-body autofocus?

    thx in advance!

  2. #2
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    Not if you have focusing motor in your lens. Read up abt nikon's AFS & AFD lenses.

    For canon, I think they do not have such restriction but they cannot use very old lens, I think. I'm not a canon user.
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  3. #3
    Member yu jianzhi's Avatar
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    Default Re: In-body autofocus ?

    http://snapsort.com/compare/Canon-600d-vs-Nikon-D5100

    yes the 600D has Auto Focus Motor Bulit into the Body According to Snapsort.com

    The Web links you to a page that Compare The 600 D With the D5100
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  4. #4
    Moderator Octarine's Avatar
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    Default Re: In-body autofocus ?

    Only Nikon has this topic with AF motor in body or in lens. All other recent brands have the AF motor in the lens, regardless which technology is used. However, the AF sensors are always in the body
    EOS

  5. #5

    Default Re: In-body autofocus ?

    Hi guys, thanks for the replies. I kinda understand what it means, but I'm still puzzled. How will this "flaw" affect me in future with respect to lens? What are the factors to consider?
    And 1 more thing is why this feature is included in Canon's entyr-level DSLRs, but not in Nikon's entry-level DSLR?

  6. #6
    Member Irvine's Avatar
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    Default Re: In-body autofocus ?

    Quote Originally Posted by tycosadako View Post
    Hi guys, thanks for the replies. I kinda understand what it means, but I'm still puzzled. How will this "flaw" affect me in future with respect to lens? What are the factors to consider?
    And 1 more thing is why this feature is included in Canon's entyr-level DSLRs, but not in Nikon's entry-level DSLR?
    the only problem is u wun be able to use screw-driven auto focus lenses. the plus point of these lenses r tat they r cheaper than AF-S lenses, but the speed is dependent on the body (e.g d3s's AF speed on say a AF-D 50 f/1.8 lens is be alot faster compared to d90's AF speed). nikon didnt include tat feature mainly to save costs in production, thus making them more affordable to the consumers
    Google is your friend. Make use of it.

  7. #7

    Default Re: In-body autofocus ?

    Btw, 1 more thing to ask outside of this topic. As Aperture, Shutter speed, ISO are important functions, which DSLRs have them as buttons (without having to go through menus). What other functions are important too?

  8. #8

    Default Re: In-body autofocus ?

    Quote Originally Posted by tycosadako View Post
    Btw, 1 more thing to ask outside of this topic. As Aperture, Shutter speed, ISO are important functions, which DSLRs have them as buttons (without having to go through menus). What other functions are important too?
    Normally only camera with the camera top lcd have dedicated buttons, meaning D90 and above models.

  9. #9

    Default Re: In-body autofocus ?

    Quote Originally Posted by tycosadako View Post
    Btw, 1 more thing to ask outside of this topic. As Aperture, Shutter speed, ISO are important functions, which DSLRs have them as buttons (without having to go through menus). What other functions are important too?
    typically mid-range level camera has them... entry level don't have such dedicated buttons probably because it can put off beginners... other functions important to me include the bracketing and WB buttons...
    Playing with M43.

  10. #10

    Default Re: In-body autofocus ?

    Only Nikon D90 level and above bodies have an in body autofocus motor. All Canon camera bodies do not come with an in-body focus motor (I am not sure about the other brands).

    This is because Nikon decided to have its current bodies compatible with the older autofocus lenses which do not feature in-lens focus motors. All Canon lenses (and third party lenses in Canon mount) have a AF motor in the lens, ever since they changed their lens mount from the FD to EF mount.

  11. #11

    Default Re: In-body autofocus ?

    Quote Originally Posted by yu jianzhi View Post
    http://snapsort.com/compare/Canon-600d-vs-Nikon-D5100

    yes the 600D has Auto Focus Motor Bulit into the Body According to Snapsort.com

    The Web links you to a page that Compare The 600 D With the D5100
    That site is filled with inaccuracies. I would NEVER use it. It's even wrong - no Canon DSLR body has an in-body AF motor.

    Quote Originally Posted by tycosadako View Post
    Btw, 1 more thing to ask outside of this topic. As Aperture, Shutter speed, ISO are important functions, which DSLRs have them as buttons (without having to go through menus). What other functions are important too?
    Most DSLR bodies will have the ISO as a button (sony DSLR bodies do). But aperture and shutter speed are usually always controlled by the DSLR body control wheel, and then it depends on what mode you are in (A, S, M) to determine what gets changed when you turn the control wheel.

    Quote Originally Posted by tycosadako View Post
    Hi guys, thanks for the replies. I kinda understand what it means, but I'm still puzzled. How will this "flaw" affect me in future with respect to lens? What are the factors to consider?
    And 1 more thing is why this feature is included in Canon's entyr-level DSLRs, but not in Nikon's entry-level DSLR?
    Nikon used it to cut the prices on their entry-level bodies. Canon never had an in-body AF motor, only on-lens. Do note that all Sony and Pentax bodies always have the in-body AF motor in addition to support for lens-driven AF.
    Alpha

  12. #12
    Senior Member ZerocoolAstra's Avatar
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    Default Re: In-body autofocus ?

    Quote Originally Posted by tycosadako View Post
    Nikon D5100 does not have in-body autofocus motor. If there is no in-body autofocus, that means have to manually focus all the time??

    Does Canon EOS 600D have in-body autofocus?

    thx in advance!
    Nikon (or Nikkor) lenses generally fall into 3 categories.
    There are bound to be exceptions (my a$$-covering statement), but I think this should represent >98% of the lenses

    1) Totally manual-focus lenses [Ai, AiS lenses, etc]
    2) Screw-driven auto-focus lenses [denoted AF] - require cam body to have AF motor
    3) Built-in AF motor [denoted AF-I, AF-S] - AF works with all the Nikon DSLRs, incl the entry models.

    Canon EOS cameras have fully shifted to having the AF motor built into the lens, thus they don't have this segregation.
    Exploring! :)

  13. #13

    Default Re: In-body autofocus ?

    Quote Originally Posted by spree86 View Post
    Normally only camera with the camera top lcd have dedicated buttons, meaning D90 and above models.
    Ah ok, Since I prefer to have dedicated buttons, I should look out for Nikon D90 (and above) and Canon D60 (and above)??

    Went to courts to have a feel of Canon 600D. There is a button to the left of metering. What is it? I had the feeling I will accidentally press it!! Does it happen guys??

  14. #14
    Senior Member ovaltinemilo's Avatar
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    Default Re: In-body autofocus ?

    Just to clarify...it's not true that only D90 and above models have dedicated buttons to access ISO/top lcd/in-built AF screws...lower older models like d70/d80 have it. Just that you can probably not find new d70/d80 to buy any more.
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  15. #15

    Default Re: In-body autofocus ?

    Quote Originally Posted by tycosadako View Post
    Ah ok, Since I prefer to have dedicated buttons, I should look out for Nikon D90 (and above) and Canon D60 (and above)??

    Went to courts to have a feel of Canon 600D. There is a button to the left of metering. What is it? I had the feeling I will accidentally press it!! Does it happen guys??
    Like ovaltinemilo said, old models have it as well, just that you have to get pre-owned ones.

  16. #16

    Default Re: In-body autofocus ?

    Quote Originally Posted by tycosadako View Post
    Ah ok, Since I prefer to have dedicated buttons, I should look out for Nikon D90 (and above) and Canon D60 (and above)??

    Went to courts to have a feel of Canon 600D. There is a button to the left of metering. What is it? I had the feeling I will accidentally press it!! Does it happen guys??
    Note that you will NOT get dedicated buttons for aperture and shutter - these are controlled by the control wheels and the shooting mode you are in, which is selected by a dial.
    Alpha

  17. #17
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    Default Re: In-body autofocus ?

    Quote Originally Posted by ovaltinemilo View Post
    Just to clarify...it's not true that only D90 and above models have dedicated buttons to access ISO/top lcd/in-built AF screws...lower older models like d70/d80 have it. Just that you can probably not find new d70/d80 to buy any more.
    D50, D70, D70s & D80 are predecessor of D90, which is now a predecessor for D7000 (logically). These models should be regarded as the same level, even though the later outperforms the older model. They all share this common attribute of having in-body motor, and some other features such as bracketing function (with 1 exception model now).

    When we say lower end, we usually mean models like D40, D40x, D60, D3000, D3100, D5000 & D5100. These are the models that does not contain in-body AF motor.

    Just to give you a full picture, higher end bodies, or to say the pro series, has even more dedicated buttons, such as D200, D300, D300s, D700, D2H, D2X, D3 and D3s (there are others which I"m not sure if I should include in discussion). Not so good in history but I believe all these models should have in-body AF motor.

  18. #18

    Default Re: In-body autofocus ?

    Just a minor clarification:
    The D50 was introduced later and was in the lineup alongside the D70. It was a lower-end model, with one control dial, a predecessor of the D40. Presumably sometime after that, Nikon decided to differentiate the entry-level and mid-range more and omitted the in-body AF motor from the D40.

    Quote Originally Posted by Cowseye View Post
    D50, D70, D70s & D80 are predecessor of D90, which is now a predecessor for D7000 (logically). These models should be regarded as the same level, even though the later outperforms the older model. They all share this common attribute of having in-body motor, and some other features such as bracketing function (with 1 exception model now).
    Last edited by Edwin Francis; 18th April 2011 at 10:33 AM.

  19. #19
    Senior Member ZerocoolAstra's Avatar
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    Default Re: In-body autofocus ?

    Quote Originally Posted by Edwin Francis View Post
    Just a minor clarification:
    The D50 was introduced later and was in the lineup alongside the D70. It was a lower-end model, with one control dial, a predecessor of the D40. Presumably sometime after that, Nikon decided to differentiate the entry-level and mid-range more and omitted the in-body AF motor from the D40.
    I presume they decided to remove the AF motor in the body to save weight and cost, and also at that time they started to introduce more AF-S kit lenses.
    But I wonder why they removed the top LCD illumination in the D50
    hehehehe
    Exploring! :)

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