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Thread: accidentally touch focusing ring

  1. #1

    Default accidentally touch focusing ring

    i am using a tamron, and sometimes accidentally touch the focusing ring but not using force.. bcos its just next to the zoom ring..

    I lent my fren he also accidentally touched the ring when its auto focusing...

    Will the autofocus be damaged this way or not as accurate...?

    Hmm just curious abt this sorry for noob question.
    I love Tamron.

  2. #2

    Default Re: accidentally touch focusing ring

    If it was dangerous to do so, you would see huge stickers and warnings all over the manual not to touch the focusing ring during AF. just make sure not to use force to stop it from rotating (duh) and you're fine.
    Alpha

  3. #3

    Default Re: accidentally touch focusing ring

    no la, is not a problem.

    loads of hapless newcomers try to manually override the af by turning the focusing ring - that would probably be more of a problem.

    your camera is not made of tofu.

  4. #4
    Member leowyien's Avatar
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    Default Re: accidentally touch focusing ring

    If we rotate the focusing ring during auto focus will it spoil the lens?
    Last edited by leowyien; 28th February 2010 at 10:28 PM.
    indie

  5. #5

    Default Re: accidentally touch focusing ring

    Quote Originally Posted by leowyien View Post
    If we rotate the focusing ring during auto focus will it spoil the lens?
    oh that will spoil. i read abt only lenses that support Full time Manual focusing can do this.

    hmm. i ask the question cos sometimes i accidentally support the camera and lens by holding over to the focus ring, only when i focus, then realise i was touching focus ring alr..ahh
    I love Tamron.

  6. #6

    Default Re: accidentally touch focusing ring

    What i tend to do is shoot with one hand. I rather get blur pics than to spoil my lens. =)
    D3s / D3x / 18-55 f3.5 - 5.6 / 55-200 f3.5-5.6 / 50 f1.8

  7. #7

    Default Re: accidentally touch focusing ring

    Quote Originally Posted by leowyien View Post
    If we rotate the focusing ring during auto focus will it spoil the lens?
    it's just like stepping the accelerator with the handbrakes still pushed down
    Fujifilm X-Pro2 Graphite, X-Pro1
    XF 14/2.8, 18/2, 23/2, 35/1.4, 56/1.2, 60/2.4, 55-200/3.5-4.8

  8. #8

    Default Re: accidentally touch focusing ring

    Quote Originally Posted by hoho85 View Post
    i am using a tamron, and sometimes accidentally touch the focusing ring but not using force.. bcos its just next to the zoom ring..

    I lent my fren he also accidentally touched the ring when its auto focusing...

    Will the autofocus be damaged this way or not as accurate...?

    Hmm just curious abt this sorry for noob question.
    touching the ring won't spoil it.
    but when in AF mode, and you attempt to turn the focus ring, or stop the ring when it's focusing, it will be damaged. (if your lens doesn't have full time manual focusing)

    Quote Originally Posted by Legoz View Post
    What i tend to do is shoot with one hand. I rather get blur pics than to spoil my lens. =)
    i rather not shoot than get blur pics

  9. #9

    Default Re: accidentally touch focusing ring

    Quote Originally Posted by leowyien View Post
    If we rotate the focusing ring during auto focus will it spoil the lens?
    It's VERY hard to turn it if the AF is still locked on. You would need to use quite a bit of force,which then falls into the "why are you trying to deliberately break your lens?" category.
    Alpha

  10. #10
    Member Cartman2000's Avatar
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    Default Re: accidentally touch focusing ring

    I heard that the AF ring works to power the motor which works like a dynamo system. If you turn it more, your AF speeds increase exponentially

  11. #11
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    Default Re: accidentally touch focusing ring

    Quote Originally Posted by Legoz View Post
    What i tend to do is shoot with one hand. I rather get blur pics than to spoil my lens. =)
    Do you also put on 5 UV filters to protect your lens?

  12. #12

    Default Re: accidentally touch focusing ring

    Quote Originally Posted by Cartman2000 View Post
    I heard that the AF ring works to power the motor which works like a dynamo system. If you turn it more, your AF speeds increase exponentially
    now then you tell me .. must start rotating all my lens
    Man greatest tool. The imaginative mind.

  13. #13
    Member 9V-Orion Images's Avatar
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    Default Re: accidentally touch focusing ring

    Quote Originally Posted by hoho85 View Post
    i am using a tamron, and sometimes accidentally touch the focusing ring but not using force.. bcos its just next to the zoom ring..

    I lent my fren he also accidentally touched the ring when its auto focusing...

    Will the autofocus be damaged this way or not as accurate...?

    Hmm just curious abt this sorry for noob question.
    You better ship it back to Japan and order the Tamron optical engineers with a 5 digit paycheck in US currency to inspect and reassemble your lens, also to calibrate the lens to within 0.0000000001% tolerance of accuracy.
    CS Aviation / Flickr
    Per aspera ad astra

  14. #14
    Member 9V-Orion Images's Avatar
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    Default Re: accidentally touch focusing ring

    Quote Originally Posted by Cartman2000 View Post
    I heard that the AF ring works to power the motor which works like a dynamo system. If you turn it more, your AF speeds increase exponentially
    If I turn it fast enough, would it power the camera without a battery inserted?
    CS Aviation / Flickr
    Per aspera ad astra

  15. #15

    Default Re: accidentally touch focusing ring

    Quote Originally Posted by 9V-Orion Images View Post
    If I turn it fast enough, would it power the camera without a battery inserted?
    if you turn it fast enough, your camera becomes an apache, and will unleash big pain on people whom you dislike while being airborne.

  16. #16
    Senior Member Diavonex's Avatar
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    Default Re: accidentally touch focusing ring

    If you engage reverse gear when your car is stationery, no damage is done.

    If you engage reverse gear when your car is moving, you will hear the grinding of gears. There will be some damage.

    Same apply to the AF of your lens.

  17. #17
    Member leowyien's Avatar
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    Default Re: accidentally touch focusing ring

    What would it cause?
    indie

  18. #18

    Default Re: accidentally touch focusing ring

    Quote Originally Posted by leowyien View Post
    What would it cause?
    Erm... Try a bit of logic, can? What happens when a gear wants to go in one direction, and you force it the other way?
    Alpha

  19. #19

    Default Re: accidentally touch focusing ring

    It won't get damaged that easily, unless you deliberately turn the focus ring hard in the opposite direction.

  20. #20
    Member luntut's Avatar
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    Default Re: accidentally touch focusing ring

    amaazing amount of OT here.
    Fast Camera. Fast Lens. Slow Me. Sigh.
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