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Thread: Best Distance for Sigma 50mm 1.4 and Canon 550D

  1. #1

    Default Best Distance for Sigma 50mm 1.4 and Canon 550D

    Hi All,

    I'm newbie in photography, hopefully the "master" here can share some of the technique of using above combo. It seems i can only get a tack sharp copy at 1metre distance. Above that, it's soft focus. Used in 5dmk2 and all distance is sharp.

    Anyone can share the technique or maybe some example too of portrait photo?

    Thanks
    Danny

  2. #2

    Default Re: Best Distance for Sigma 50mm 1.4 and Canon 550D

    What apertures are you shooting at? Lighting conditions? Are you moving after locking focus?

    Too many variables. Post a sample pic and maybe we can help more.
    Alpha

  3. #3

    Default Re: Best Distance for Sigma 50mm 1.4 and Canon 550D

    natural lighting, aperture tried from 1.4 to 5.6, with distance more than 1 m it's soft. If within 1 - 1.25 m if sharp. well, i never recompose the focus.. should i try shot on tripod instead?

  4. #4
    Moderator Octarine's Avatar
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    Default Re: Best Distance for Sigma 50mm 1.4 and Canon 550D

    Is the lens focusing? Manual focus mode accidentally? Do a structured test with different distances, leave aperture and all the rest constant. Do a focus test using test charts (read the instructions).
    EOS

  5. #5

    Default Re: Best Distance for Sigma 50mm 1.4 and Canon 550D

    NPNT. :P
    Alpha

  6. #6

    Default Re: Best Distance for Sigma 50mm 1.4 and Canon 550D

    try focusing manually. any AF beep ?
    if photos are soft and AF is working try stopping down to between F4 to F8?

    wise man tell me lens very sharp between F4 to F8
    宁愿遇见丢失幼崽的母熊,也不愿碰上做蠢事的愚人

  7. #7
    Moderator Octarine's Avatar
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    Default Re: Best Distance for Sigma 50mm 1.4 and Canon 550D

    Quote Originally Posted by Shizuma View Post
    wise man tell me lens very sharp between F4 to F8
    With so many different lenses out there .. daring to make such statements
    EOS

  8. #8

    Default Re: Best Distance for Sigma 50mm 1.4 and Canon 550D

    thanks all, i think its just at 1.4 and maybe my hand is shaking all the time - using tripod is ok

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