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Thread: What do they mean - half-press to achieve focus

  1. #1
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    Question What do they mean - half-press to achieve focus

    Can someone please explain?

    Is this method used when it is AF or MF? or can be used in both situations?
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    Senior Member zac08's Avatar
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    Default Re: What do they mean - half-press to achieve focus

    Quote Originally Posted by fotojoy View Post
    Can someone please explain?

    Is this method used when it is AF or MF? or can be used in both situations?
    Try it.. depress the shutter button halfway down in autofocus mode.

    You should hear the lens actually moving and trying to get into focus.
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    Default Re: What do they mean - half-press to achieve focus

    Quote Originally Posted by zac08 View Post
    Try it.. depress the shutter button halfway down in autofocus mode.

    You should hear the lens actually moving and trying to get into focus.
    OH... so it's in AF only lah?

    'cos I always use MF so this method doesn't apply lorrr?
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    Moderator catchlights's Avatar
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    Default Re: What do they mean - half-press to achieve focus

    Quote Originally Posted by fotojoy View Post
    OH... so it's in AF only lah?

    'cos I always use MF so this method doesn't apply lorrr?
    if I remember correctly, Manual Focus lens, you have to use your hand to turn the focusing ring on the lens, and view thru the view finder to ahchive in focus.
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    Default Re: What do they mean - half-press to achieve focus

    MF doesnt apply..

  6. #6

    Default Re: What do they mean - half-press to achieve focus

    Half press in AF mode, the camera will Auto Focus... Keep it half-depressed equals to focus lock... From there, you can re-compose your picture. Of course, if your settings are different, it may not work (Continuous AF or AE/AF Lock button)
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    Default Re: What do they mean - half-press to achieve focus

    Quote Originally Posted by FilterFunk View Post
    MF doesnt apply..
    Cool ... that's what I wanted to confirm. Thanks.
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    Default Re: What do they mean - half-press to achieve focus

    Quote Originally Posted by catchlights View Post
    if I remember correctly, Manual Focus lens, you have to use your hand to turn the focusing ring on the lens, and view thru the view finder to ahchive in focus.
    Okie... so what I've been doing is right lah

    Thought I was missing out on something.

    So why do people use AF instead of MF?
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    Default Re: What do they mean - half-press to achieve focus

    Quote Originally Posted by fotojoy View Post
    Okie... so what I've been doing is right lah

    Thought I was missing out on something.

    So why do people use AF instead of MF?
    I guess its faster..
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    Moderator catchlights's Avatar
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    Default Re: What do they mean - half-press to achieve focus

    Quote Originally Posted by fotojoy View Post
    Okie... so what I've been doing is right lah

    Thought I was missing out on something.

    So why do people use AF instead of MF?
    why some people prefer drive auto gear car instead of manual gear car?
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    Default Re: What do they mean - half-press to achieve focus

    Quote Originally Posted by fotojoy View Post
    OH... so it's in AF only lah?

    'cos I always use MF so this method doesn't apply lorrr?
    Not completely true if you are using MF on an AF camera.
    AF - you press shutter halfway, activate lens to focus itself.
    MF - you turn the lens until you think it is focus, then you press the shutter halfway and the viewfinder indication will tell you if focus is correct. (usually a circle or dot).
    Focus lock already explained in post #6

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    Default Re: What do they mean - half-press to achieve focus

    AF prefered in general focusing because faster then hand.
    MF prefered when many objects fall within the focusing spot (eg shooting animals behind narrow bars or shooting birds in dense foilage) and confuse AF.

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    Senior Member zac08's Avatar
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    Default Re: What do they mean - half-press to achieve focus

    Quote Originally Posted by fotojoy View Post
    Okie... so what I've been doing is right lah

    Thought I was missing out on something.

    So why do people use AF instead of MF?
    Save time and effort? Let the camera work for you. And with a fast lens (like the AF-S types), it's often much faster than MF...
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    Senior Member zac08's Avatar
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    Default Re: What do they mean - half-press to achieve focus

    Quote Originally Posted by MDZ2 View Post
    AF prefered in general focusing because faster then hand.
    MF prefered when many objects fall within the focusing spot (eg shooting animals behind narrow bars or shooting birds in dense foilage) and confuse AF.
    MF is also the way to go for macro shooting...
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    Default Re: What do they mean - half-press to achieve focus

    When you half pressed, both in MF or AF, the light exposure will work. In AF, the motor will set the lens' distance. In MF, it will check whether subject in focus point is focused.

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    Arto.

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    Default Re: What do they mean - half-press to achieve focus

    Quote Originally Posted by fotojoy View Post
    Okie... so what I've been doing is right lah

    Thought I was missing out on something.

    So why do people use AF instead of MF?
    getting old and lazy, eyes not so good anymore

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