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Thread: Auto versus manual focus

  1. #1
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    Auto versus manual focus

    I am just beginning to learn how to use my new Sony A55 DSLR. I was wondering about settings and why auto settings seem to differ in result from manual setting using the same f/stop, speed and ISO?
    Last edited by Dave Humphries; 15th October 2011 at 03:28 PM.

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    Black Pearl's Avatar
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    re: Auto versus manuel focus

    You need to be a little more specific.

    Post some examples with as much info on each as possible and let the gurus here get their teeth into them for you.

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    Alan Pezzulich

    Re: Auto versus manuel focus

    In auto focusing there is a small square the you place in the position that you want to be in focus. If that square contains scenery that vary in distance, the camera will have to make a decision where to focus the camera. This is often the case in macro photography. The camera can not get everything in the square in focus so it will pick something. The camera does not know what in the square you want to focus on. In manual focus you choose.

    Alan

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    Re: Auto versus manuel focus

    Mostly it seems the white balance differs. On manuel the picture in sunlight appears more bluish.

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    Re: Auto versus manual focus

    Quote Originally Posted by alvaokie View Post
    Mostly it seems the white balance differs. On manual the picture in sunlight appears more bluish.
    What is your white balance setting in manual? Is it the same as the one used in auto mode?
    Last edited by Dave Humphries; 15th October 2011 at 03:28 PM.

  6. #6
    HDphotography's Avatar
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    Re: Auto versus manuel focus

    Quote Originally Posted by alvaokie View Post
    Mostly it seems the white balance differs. On manuel the picture in sunlight appears more bluish.
    Check your white balance settings in your menu. Personally, I leave mine on auto. It turns out same on both manual and auto. I always shoot in RAW. That way , I can tweak my WB, if I want to.

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    Re: Auto versus manual focus

    Quote Originally Posted by alvaokie View Post
    why auto settings seem to differ in result from manual setting...?
    Are you referring to the cameras FOCUS switch for Auto/Manual or is it the "Mode" dial you are referring to?
    The FOCUS switch should not change Color Balance in any way, only the way the lens reaches correct focus.
    I have a Canon G1X when set to Exposure Modes- [Program, Av, Sv, M,] I can set fixed white balance, but when I turn the mode dial back to "Auto"- everything, (and I mean EVERYTHING!) resets back to auto. White Balance included- which is very annoying.
    May be your camera does something similar.

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