Banding with Canon 5d

Discussion in 'Beyond the Basics' started by bradracino, Sep 28, 2008.

  1. bradracino

    bradracino TPF Noob!

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    Hey all,

    I bought a 5d in May and since then I've noticed some strange banding throughout certain photos. If I'm taking photos indoors and there is a window with daylight coming in, there will most likely be a green horizontal line extending from the window throughout the shot. If I'm shooting outdoors at night, the same thing happens from street lights and such (with a red line). Sometimes indoors the light turns into a green halo if someone is standing in front of the window. What is doing this? And how do I correct it? I've lost a lot of good photos to this anomaly. Any suggestions?

    I never had this happen with my old 10d. And I used the same lenses. I'm upgrading to a 24-70 L lens this week so maybe that will fix it? Thanks
     
  2. Antithesis

    Antithesis No longer a newbie, moving up!

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    If it's a colorful band with a lot of noise in it, it's the sensor and it sometimes happens at high ISO if you underexpose too much. You can almost see a grid in the image. It only happens to me at ISO1600 or above in deep shadows, or if I try to bump the exposure too much in PS. I've heard it helps if you use the latest firmware, but I have yet to update. Nailing the exposure helps at high ISO as well.

    If the bands your seeing have any curvature at all, it might just be lens flare. If there is a perfect color outline of someone near a window or in any light to dark, high-contrast areas, your likely seeing chromatic aberration. This happens with almost all lenses in high contrast situations, even the 24-70 your looking at.

    I'd recommend posting a crop of what your talking about to help analyze the problem.
     
  3. bradracino

    bradracino TPF Noob!

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    [​IMG]

    <a href="http://s47.photobucket.com/albums/f159/bradracino/?action=view&current=banding.jpg" target="_blank"><img src="http://i47.photobucket.com/albums/f159/bradracino/banding.jpg" border="0" alt="Photobucket"></a>


    Here is an image from the last wedding... I couldn't find many more but this is the general problem. In this case it's pretty minimal but it's been much worse in others.

    Thanks
     
  4. ksmattfish

    ksmattfish Now 100% DC - not as cool as I once was, but still

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    I'd send it in for repair. It's not the lens.
     
  5. RacePhoto

    RacePhoto TPF Noob!

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    But the picture was shot a 1/40th with a flash, ISO 400, and the light in the window is brighter than the flash exposure, so it's going to over expose and create Chromatic Aberrations in the edges of the burned out area.

    It's not the lens and it's not the camera. Take it from there.
     
  6. Joves

    Joves No longer a newbie, moving up!

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    Yep it isnt a lens fault there. It is clearly sensor based. Id send it in.
     
  7. Josh66

    Josh66 Been spending a lot of time on here!

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    That's not CA, and it's not just around the edges of the burned out area - it goes through the entire frame.

    From what I've heard about it, it happens when you have a bright light source on the edge of the frame.

    I'm not sure if sending it in will fix anything (might not be fixable)... Are you using the latest firmware? Maybe it was a processing (in camera) problem that has been fixed already with new firmware.
     
  8. Garbz

    Garbz No longer a newbie, moving up!

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    ... Did you post this in the right thread? What has CA got to do with a green stripe appearing down a frame through the middle of a black suit.

    It's the camera, send it in for repair.

    /EDIT: dammit jeep beat me too it.
     
  9. Joves

    Joves No longer a newbie, moving up!

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    There is a line through the bride as well.
     
  10. Josh66

    Josh66 Been spending a lot of time on here!

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    There's actually two going through the bride (easiest to see on her head).
     
  11. bradracino

    bradracino TPF Noob!

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    here are some more examples of the problem. I just typed in "horizontal banding canon 5d" into google and there was a letter from the ceo or someone high up in canon that said it was due to interference at high ISOs and certain lenses. None of the photos were at high iso's and my lenses aren't any of the ones named. What the hell is going on?

    I appreciate all the responses so far, you guys have been a gigantic help since i joined TPF.

    http://i47.photobucket.com/albums/f159/bradracino/carr-5.jpg

    <a href="http://s47.photobucket.com/albums/f159/bradracino/?action=view&current=carr-5.jpg" target="_blank"><img src="http://i47.photobucket.com/albums/f159/bradracino/carr-5.jpg" border="0" alt="Photobucket"></a>

    http://i47.photobucket.com/albums/f159/bradracino/carr-6.jpg

    <a href="http://s47.photobucket.com/albums/f159/bradracino/?action=view&current=carr-6.jpg" target="_blank"><img src="http://i47.photobucket.com/albums/f159/bradracino/carr-6.jpg" border="0" alt="Photobucket"></a>
     
  12. Bifurcator

    Bifurcator TPF Noob!

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    I've seen streaks like that before and it was sensor based. The cameras it happened on were a $150 P&Ss so I didn't take them in or worry about it but anytime there were bright areas like the sun, or small bright windows in a dark room they made streaks kinda like that. Also CEOs can be just as totally FOS as anyone else. Actually I think CEOs and PR officials are especially FOS. :D But if it makes a difference to you ISO affected it. :p
     
    Last edited: Oct 1, 2008

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