Sometimes my photos look like I'm shooting through a tube...

Discussion in 'Technical Troubleshooting' started by Lt.Ron AVFD, Jan 7, 2020.

  1. Lt.Ron AVFD

    Lt.Ron AVFD New Member

    Joined:
    Nov 21, 2019
    Messages:
    17
    Equipment:
    77D, 18-136mm, 70-300mm, Pixma-100
    Hi All
    I have noticed in some photos, in the corners there is a "black shadow"
    Does not happen all the time and in not consistent in severity...
    Not sure if it is only 1 lens or not...
    Suggestions?
    Thanks
     

    Attached Files:


  2. porkphoto

    porkphoto Active Member Site Supporter

    Joined:
    May 9, 2017
    Messages:
    563
    Location:
    Southern California, USA
    Equipment:
    1DmkIII, 1DSmkII, 50d, 7d, 6d, 70d, 17-40 f4L, 24-70 f4L IS, 100 f2.8L IS macro, 200 f2.8L, 300 f4L IS, 300 f2.8L
    Looks to me like vignetting is creeping into your images. Vignetting usually occurs with large aperture settings, it could be compounded by your lens hood. Generally stopping down will cure this.
     
  3. johnsey

    johnsey Site Moderator Staff Member Site Supporter

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    Fargo, ND
    Equipment:
    5dMk4, 5dMk2, 20D, 70-200 2.8L IS, 100mm 2.8 Macro USM, 50mm 1.4, 85mm 1.8, 17-40mm 4.0L, Rokinon 14mm 2.8; Pixma Pro-100
    Second vote for vignetting, after looking up your lenses.

    True a lens hood could show up as well similarly, did you have a lens hood on?

    I ruled out the EF 70-300 as it is a full frame lens and should not vignette on a crop body. The EF-S 18-135 however is a different story.
    https://www.lenstip.com/275.8-Lens_review-Canon_EF-S_18-135_mm_f_3.5-5.6_IS_Vignetting.html
    Testing shows noticeable vignetting at wide aperture especially at the far ends of the zoom range.

    Subject matter makes a difference, for example you will also notice it on brighter background like a blue sky easier than other subjects.
     
  4. Lt.Ron AVFD

    Lt.Ron AVFD New Member

    Joined:
    Nov 21, 2019
    Messages:
    17
    Equipment:
    77D, 18-136mm, 70-300mm, Pixma-100
    No Hood with he lens(s) So large aperture can cause this? interesting.
    Thanks
     
  5. GDN

    GDN Well-Known Member

    Joined:
    Jul 22, 2018
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    903
    Location:
    South Island, NZ
    Equipment:
    A little Canon stuff
    Just a couple of questions. What camera and lens combination? What focal length do you tend to see this? Do you have any screw in filters on the front of the lens?

    Gary
     

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