repeated streaking using a tripod and remote shutter release.

Discussion in 'Photography Beginners' Forum' started by mrsnoogle, Jul 16, 2007.

  1. mrsnoogle

    mrsnoogle TPF Noob!

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    hey there....
    I have just recently purchased my first dslr, a pentax k100d and am having some troubles getting the sharpness I expected. I am using a sigma 70-300mm dg apo zoom lens in macro mode on a tripod with a remote shutter release and a 2 second delay (flicking up the mirror before the picture is taken) but am still getting streaking.

    [​IMG]
    Shot with PENTAX K100D at 2007-07-16

    The shots were taken repeatedly in an inside environment without any wind of any kind using a flash and each time an almost identical blur/streak in the same direction was captured. The other settings are (1/180, f5.6, 0.0 ev, iso 200).

    Does anybody know how i could possibly be going wrong here?

    any help is of course much appreciated...
    camm.
     
  2. Wow, got me stumped, but I look forward to hearing the answer. Does your camera have one of those sensors that shakes dirt off?
     
  3. Johnboy2978

    Johnboy2978 No longer a newbie, moving up!

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    Is the 100D equipped w/ image stabilization? I have the k10d and the manual says that if you have it mounted on a tripod to turn off image stabilization. Try that in addition to the settings you mentioned above and repeat. I haven't had issues w/ mine with it on or off when shooting on a tripod though.
     
  4. Garbz

    Garbz No longer a newbie, moving up!

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    Shake Reduction.

    It's a fantastic feature, unless there is no shaking. It's a common problem in Nikon's VR Canon's IS, and probably every other company's version of the technology. When a camera is mounted on a tripod there is negligible shake, even less so when mirror lockup is used. The sensor may still be trying to compensate with the exception that there's nothing to compensate for and it actually causes a camera shake type picture like the one above.

    Try turning shake reduction off and seeing if it still works. If it is off... I'm out of ideas.

    /EDIT: Damn tabbed browsing people are replying while I'm reading other posts >_<
     
  5. mrsnoogle

    mrsnoogle TPF Noob!

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    shake reduction turned off.

    results are the same :(

    ... could this be a problem with the camera? or maybe the lens?
     
  6. mrsnoogle

    mrsnoogle TPF Noob!

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    a few more. all shot on a tripod, all showing the same streaking problem :(

    [​IMG]
    Shot with PENTAX K100D at 2007-07-16

    [​IMG]
    Shot with PENTAX K100D at 2007-07-16
     
  7. jwkwd

    jwkwd TPF Noob!

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    Have you tried manual focus?
     
  8. tempra

    tempra TPF Noob!

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    Have you tried a different lens? does it do it with that, could be the lens is dodgy, or failing that, the camera
     
  9. mrsnoogle

    mrsnoogle TPF Noob!

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    images are razor sharp with the 18-55 kit lens. The streaking happpens at the 200-300mm range reagrless of what i do, shake reduction on or off, tripod or laying it on a table, locking mirror or not.

    Is this kind of thing known to happen in dodgy lenses?
     
  10. tempra

    tempra TPF Noob!

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    I dunno, but if they are sharp at shorter focal lengths, it really seems like the lens is duff as the camera takes the same pic regardless of focal length.

    Can you take it back and get an exchange, or at least try it on another camera to see if the same results occur
     
  11. Mike_E

    Mike_E No longer a newbie, moving up!

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    Try going to a camera shop and trying another lens of that type. If it still has issues then look to your camera, and if not then you need a new lens.

    mike
     
  12. Big Mike

    Big Mike I am Big, I am Mike Staff Member Supporting Member

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    It's certainly not unheard of that a lens may be misaligned or malfunctioning. They are, after all...precision optics and need to be within very tight tolerances in order for them to work properly. Same for the camera as well.

    The easy check would be to try the lens on a different camera.

    You may need to exchange it or send it in for repair.
     

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