Hi all!
I recently (like a week ago maybe) bought a 1Ds from a CSer and I just discovered this problem. Since Canon's service center will only be open Tuesday (when I will bring it in), I was wondering if any of you could help with this, because it's just driving me nuts.
Basically the problem only occurs at very high shutter speeds (in excess of 1/1000, that's why I initially didn't see it), and at these speeds there is a band at the top of the frame (if it is horizontal).
Example photos: (images straight from camera, large jpeg resized to 800px on the long side)
Click here for larger Image
Camera: Canon 1Ds
Lens: 16-35/2.8L @ 23mm
Shutter: 1/4000
Aperture: f2.8
ISO: 400
Click here for larger Image
Camera: Canon 1Ds
Lens: Sigma 70-200/2.8 @ 200mm
Shutter: 1/2000
Aperture: f2.8
ISO: 200
Anyways I've done some tests and have found that the problem has to do with the camera, and possibly the shutter, because the problem occurs with multiple lenses, and the severity increases with higher shutter speed. Below is an image of my light panel (from the days I actually shot transparencies) without a lens mounted.
Click here for larger Image
Camera: Canon 1Ds
Shutter: 1/5300
ISO: 200
Can anyone help??
Thanks in advance (and happy new year!)
Jianghai
I recently (like a week ago maybe) bought a 1Ds from a CSer and I just discovered this problem. Since Canon's service center will only be open Tuesday (when I will bring it in), I was wondering if any of you could help with this, because it's just driving me nuts.
Basically the problem only occurs at very high shutter speeds (in excess of 1/1000, that's why I initially didn't see it), and at these speeds there is a band at the top of the frame (if it is horizontal).
Example photos: (images straight from camera, large jpeg resized to 800px on the long side)
Click here for larger Image
Camera: Canon 1Ds
Lens: 16-35/2.8L @ 23mm
Shutter: 1/4000
Aperture: f2.8
ISO: 400
Click here for larger Image
Camera: Canon 1Ds
Lens: Sigma 70-200/2.8 @ 200mm
Shutter: 1/2000
Aperture: f2.8
ISO: 200
Anyways I've done some tests and have found that the problem has to do with the camera, and possibly the shutter, because the problem occurs with multiple lenses, and the severity increases with higher shutter speed. Below is an image of my light panel (from the days I actually shot transparencies) without a lens mounted.
Click here for larger Image
Camera: Canon 1Ds
Shutter: 1/5300
ISO: 200
Can anyone help??
Thanks in advance (and happy new year!)
Jianghai