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Thread: Something wrong with my gear - body or lens.

  1. #1
    DeKa77's Avatar
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    Dinh Khang

    Something wrong with my gear - body or lens.

    Hi all,

    This picture is taken by D90 and 50 f/1.8 non D and I dont know why its Flickr Exif says f/19 - unbelievable !!!
    Pls help .

    http://www.flickr.com/photos/deka77/...n/photostream/

    FYI, a flash attached on the body in M mode.
    Last edited by DeKa77; 31st December 2012 at 06:32 AM.

  2. #2

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    Re: Something wrong with my gear - body or lens.

    What does the EXIF in the image say? Flickr could be the problem as well.
    (FWIW, DoF seems more in agreement with F2.8 than with F19...)

  3. #3

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    Re: Something wrong with my gear - body or lens.

    I tried to find the exif data on the image but without success. Masses of info about colour profile and the histogram etc but not the basic shooting details.

    So like Remco said, check on your original image then we can think again.

  4. #4
    Moderator GrumpyDiver's Avatar
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    Re: Something wrong with my gear - body or lens.

    I find that Flickr occasionally screws up badly and does not read the metadata properly. Try looking at it with your PP software. ViewNX2 that shipped with your camera will certainly allow you to see the EXIF data and Photoshop certainly shows it.

  5. #5
    xpatUSA's Avatar
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    Re: Something wrong with my gear - body or lens.

    I downloaded the large size pic, and the EXIF data has been stripped as said earlier. Accordingly,Photoshop Elements 6 finds nothing to display in "Info".

    It may well be that Flickr (I am not a user) makes an info. record somewhere before stripping the EXIF data and doesn't always get it right. However "19" is suspiciously close to "18". I've seen aperture settings expressed as a fraction e.g. 18/10 and not always with exact "rounded" f-numbers. So, 19/10 would not have been unreasonable if Flickr had displayed it right (by that, I mean f/1.9).

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    Moderator Dave Humphries's Avatar
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    Re: Something wrong with my gear - body or lens.

    Hi

    Here's the Flickr /meta page;
    http://www.flickr.com/photos/deka77/8326653952/meta which does indeed show f/19

    I am not familiar with that lens, are you saying it does go beyonf f/16?

    My only other thought is; how close were you focused? - I know my macro lens 'corrects' the set aperture reading for close distances. Mine is an f/2.8 lens, but used wide open and focused fairly close, the reading shows in EXIF as the corrected figure of say f/3.0 (or greater if focused really close).

    I am thinking if you shot at f/16, which seems unlikely, it has corrected it.

    More likely is a temporary (or permanent) reading error in the electronics between lens and body that is mis-reporting the aperture.

    I suggest you try some tests, with and without flash and in other modes.

    When you say "non D", do you mean the AF-S G-series lens, or something older?

    Could you do me a favour please?
    Could you Edit your Profile and put your first name in the Real Name field and where you are (roughly) in the Location field? - thanks.

    Was it a non-Nikon flash?
    I ask because that's not registered either.

    Cheers,

  7. #7
    DeKa77's Avatar
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    Re: Something wrong with my gear - body or lens.

    Tks All,

    The picture is shot by the same gear and without flash.
    FYI, Nikkor lens non D is the older one and it goes at f/22, the flash is Youngnou 560 ( China made )

    http://www.flickr.com/photos/ndk277/...n/photostream/

    and the next is opened at max f/1.8 :

    http://www.flickr.com/photos/ndk277/...n/photostream/

    Thanks
    Last edited by DeKa77; 1st January 2013 at 04:17 PM.

  8. #8

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    Re: Something wrong with my gear - body or lens.

    At that shooting distance you don't have much depth of field but the background is closer to sharp in the first example which suggests a smaller aperture. The colour seems degraded in the second which again suggests a larger aperture than the first.
    With the depth of field aparent in the first photo I would expect EXIF to list a smallish aperture.
    While f/19 is not an aperture than humans normally would use or know about the more precise camera is quite familiar with such numbers depending I guess on what steps their designers decided to include in the design. Cameras don't make mistakes so I don't see f/19 as an error from f/18.

    I don't see anything wrong with the gear and all are nice shots by the photographer. The second flower needs PP thats all

    With a YN560 that close I quite believe the f/19 ... was it on full power? and what ISO?

  9. #9
    xpatUSA's Avatar
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    Re: Something wrong with my gear - body or lens.

    Quote Originally Posted by jcuknz View Post
    Cameras don't make mistakes so I don't see f/19 as an error from f/18
    The EXIF for this one says F/5.7 - camera mistake?

    Something wrong with my gear - body or lens.

    PSE 6 "File Info" says (under EXIF) Fnumber:5656849/1000000 so I guess the format of the fraction I posted was a little off.

  10. #10
    Moderator Dave Humphries's Avatar
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    Re: Something wrong with my gear - body or lens.

    Hi Dinh Khang,

    If the lens goes to f/22 and aperture steps are half stops (one click between each full stop, then f/19 is the correct number.
    Is it possible you inadvertently selected it?
    Or had the aperture ring set just past the f/16 stop and the lens mis-read this as having f/19 selected?

    f/18 and f/20 are the third of a stop values - relevant only if you get two clicks between each whole stop.

    Thanks for adding your first names.

    Cheers,

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