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Thread: Bringing a focus test chart while lens shopping

  1. #1
    Member bojee's Avatar
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    Default Bringing a focus test chart while lens shopping

    Hi all!

    Has anyone of you brought a focus test chart while lens shopping? I really would like to bring one because I would like to buy a Sigma lens for my D90. Also, doing this test handheld is ok right?
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  2. #2

    Default Re: Bringing a focus test chart while lens shopping

    Dont worry about Sigma. As long under warranty they can do lens adjustment but only the first time is free. Have to book appointment with them first though.
    You wont see me much less remember me but i am the guy who makes you look good.

  3. #3
    Member bojee's Avatar
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    Default Re: Bringing a focus test chart while lens shopping

    Quote Originally Posted by Reportage View Post
    Dont worry about Sigma. As long under warranty they can do lens adjustment but only the first time is free. Have to book appointment with them first though.
    Yeah, but the reason why I would like to bring a focus test chart is to avoid the hassle of sending the lens for calibration. I would like to get a decent copy as much as possible.
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  4. #4

    Default Re: Bringing a focus test chart while lens shopping

    Don't need to.
    Just place on table, focus on something (eg. standing table calendar; lens box, etc) and use the camera self timer to take the shots.

  5. #5

    Default Re: Bringing a focus test chart while lens shopping

    if u really want to do an accurate focus check, both focus test chart + tripod are required. some of the reason for off-focus may be due to handshake rather than actual lens focusing issue.

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    Moderator daredevil123's Avatar
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    Quote Originally Posted by xperia
    if u really want to do an accurate focus check, both focus test chart + tripod are required. some of the reason for off-focus may be due to handshake rather than actual lens focusing issue.
    One way to get around that is to use flash and force shutter speed up.

  7. #7
    Member bojee's Avatar
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    Default Re: Bringing a focus test chart while lens shopping

    Quote Originally Posted by daredevil123 View Post
    One way to get around that is to use flash and force shutter speed up.
    Thanks DD. It would be weird to lug around a tripod while testing the lens.

    Anyway, has anybody tried bringing a focus test chart to stores to test?
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    Moderator daredevil123's Avatar
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    Quote Originally Posted by bojee

    Thanks DD. It would be weird to lug around a tripod while testing the lens.

    Anyway, has anybody tried bringing a focus test chart to stores to test?
    I did once in CP. No big deal.

  9. #9
    Moderator Octarine's Avatar
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    Default Re: Bringing a focus test chart while lens shopping

    Quote Originally Posted by bojee View Post
    Thanks DD. It would be weird to lug around a tripod while testing the lens.
    Anyway, has anybody tried bringing a focus test chart to stores to test?
    What lens do you want to get? Mind the minimum focus distance. For some telephoto lenses it's quite long and you need space in the shop. Nothing that you want to do on a Saturday afternoon. Also, don't try this in shops like Bally and other jokers. OP should be fine. Give them a call to check stock.
    EOS

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    Moderator catchlights's Avatar
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    Default Re: Bringing a focus test chart while lens shopping

    don't do this during weekends, else somebody might post photo of you testing the lens with tripod, laptop and focusing chart in this forum.
    Shoot to Live, Live to Shoot
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  11. #11
    Member bojee's Avatar
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    Quote Originally Posted by Octarine

    What lens do you want to get? Mind the minimum focus distance. For some telephoto lenses it's quite long and you need space in the shop. Nothing that you want to do on a Saturday afternoon. Also, don't try this in shops like Bally and other jokers. OP should be fine. Give them a call to check stock.
    A Sigma 24mm 1.8

    Ok, will do. I'll call them first. Thanks.
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  12. #12
    Member bojee's Avatar
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    Default Re: Bringing a focus test chart while lens shopping

    Quote Originally Posted by catchlights View Post
    don't do this during weekends, else somebody might post photo of you testing the lens with tripod, laptop and focusing chart in this forum.
    Hahahahaha yeah I will be discreet. I will just bring a chart and just zoom in on my cam. No tripod and laptop in hand.

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  13. #13
    Senior Member luna_sea83's Avatar
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    Default Re: Bringing a focus test chart while lens shopping

    if you wanna look more natural, bring along newspaper.

    I believe it won't attract as much attention compared to a focusing chart.

  14. #14
    Moderator catchlights's Avatar
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    Default Re: Bringing a focus test chart while lens shopping

    Quote Originally Posted by luna_sea83 View Post
    if you wanna look more natural, bring along newspaper.

    I believe it won't attract as much attention compared to a focusing chart.
    lol,

    I was about to ask him bring a Macbeth Color Chart to test the lens rendering of colors as well....
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  15. #15
    Moderator catchlights's Avatar
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    Default Re: Bringing a focus test chart while lens shopping

    Quote Originally Posted by bojee View Post
    Hahahahaha yeah I will be discreet. I will just bring a chart and just zoom in on my cam. No tripod and laptop in hand.

    you can borrow a tripod from them..heheh
    Shoot to Live, Live to Shoot
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  16. #16

    Default Re: Bringing a focus test chart while lens shopping

    Quote Originally Posted by bojee View Post
    Hi all!

    Has anyone of you brought a focus test chart while lens shopping? I really would like to bring one because I would like to buy a Sigma lens for my D90. Also, doing this test handheld is ok right?
    Actually just use a ruler. I don't usually test it before I buy but I use a ruler to check my lenses if there's doubt. Just handhold. If you use a small aperture, just crank up the ISO since you're just testing focus and not image quality.

  17. #17

    Default Re: Bringing a focus test chart while lens shopping

    Quote Originally Posted by bojee View Post
    Hi all!

    Has anyone of you brought a focus test chart while lens shopping? I really would like to bring one because I would like to buy a Sigma lens for my D90. Also, doing this test handheld is ok right?
    Actually just use/borrow a ruler. I don't usually test it before I buy but I use a ruler to check my lenses if there's doubt. Just handhold. If you use a small aperture, just crank up the ISO since you're just testing focus and not image quality.

  18. #18
    Member bojee's Avatar
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    Default Re: Bringing a focus test chart while lens shopping

    Quote Originally Posted by eulee View Post
    Actually just use/borrow a ruler. I don't usually test it before I buy but I use a ruler to check my lenses if there's doubt. Just handhold. If you use a small aperture, just crank up the ISO since you're just testing focus and not image quality.
    Thanks for the tip.
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  19. #19

    Default Re: Bringing a focus test chart while lens shopping

    where can we actually get a copy of the focus test chart?

  20. #20
    Moderator Octarine's Avatar
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    Default Re: Bringing a focus test chart while lens shopping

    Quote Originally Posted by Turbonetics View Post
    where can we actually get a copy of the focus test chart?
    Feed three words to the Search function or Google. Takes only seconds...
    EOS

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