I am using slide film in a Canon EOS 1V and I recently discovered that some of my pictures turn out to have a white stripe on top of the frame, e.g. in these ones:

What I find weird is that only some pictures do have that stripe, while others turn out perfectly fine.

• I thought it could be the sealing, but taken that it occurs so unregularly I don't think this is the issue.
• I also don't think it is the shutter, because if it was, wouldn't the white stripe be more parallel to the border?
• It's also not some stain or anything from the devloping process - it can't be rubbed off etc.
• The stripe shows on the slides as well, so it's not due to the scanning either.

What could be the reason and what can I do to solve it?

I am using slide film in a Canon EOS 1V and I recently discovered that some of my pictures turn out to have a white stripe on top of the frame, e.g. in these ones:

What I find weird is that only some pictures do have that stripe, while others turn out perfectly fine.

• I thought it could be the sealing, but taken that it occurs so unregularly I don't think this is the issue.
• I also don't think it is the shutter, because if it was, wouldn't the white stripe be more parallel to the border?
• It's also not some stain or anything from the devloping process - it can't be rubbed off etc.
• The stripe shows on the slides as well, so it's not due to the scanning either.

What could be the reason and what can I do to solve it?

I am using slide film in a Canon EOS 1V and I recently discovered that some of my pictures turn out to have a white stripe on top of the frame, e.g. this one:

to make it more clear, this is the relevant part:

What I find weird is that only some pictures do have that stripe, while others turn out perfectly fine.

• I thought it could be the sealing, but taken that it occurs so unregularly I don't think this is the issue.
• I also don't think it is the shutter, because if it was, wouldn't the white stripe be more parallel to the border?
• It's also not some stain or anything from the devloping process - it can't be rubbed off etc.
• The stripe shows on the slides as well, so it's not due to the scanning either.

What could be the reason and what can I do to solve it?

I am using slide film in a Canon EOS 1V and I recently discovered that some of my pictures turn out to have a white stripe on top of the frame, e.g. in these ones:

What I find weird is that only some pictures do have that stripe, while others turn out perfectly fine.

• I thought it could be the sealing, but taken that it occurs so unregularly I don't think this is the issue.
• I also don't think it is the shutter, because if it was, wouldn't the white stripe be more parallel to the border?
• It's also not some stain or anything from the devloping process - it can't be rubbed off etc.
• The stripe shows on the slides as well, so it's not due to the scanning either.

What could be the reason and what can I do to solve it?

I am using slide films in a Canon EOS 1V and I recently discovered that some of my pictures turn out to have a white stripe on top of the frame, e.g. this one:

to make it more clear, this is the relevant part:

What I find weird is that only some pictures do have that stripe, while others turn out perfectly fine.

• I thought it could be the sealing, but taken that it occurs so unregularly I don't think this is the issue.
• I also don't think it is the shutter, because if it was, wouldn't the white stripe be more parallel to the border?
• It's also not some stain or anything from the devloping process - it can't be rubbed off etc.
• The stripe shows on the slides as well, so it's not due to the scanning either.

What could be the reason and what can I do to solve it?

I am using slide film in a Canon EOS 1V and I recently discovered that some of my pictures turn out to have a white stripe on top of the frame, e.g. this one:

to make it more clear, this is the relevant part:

What I find weird is that only some pictures do have that stripe, while others turn out perfectly fine.

• I thought it could be the sealing, but taken that it occurs so unregularly I don't think this is the issue.
• I also don't think it is the shutter, because if it was, wouldn't the white stripe be more parallel to the border?
• It's also not some stain or anything from the devloping process - it can't be rubbed off etc.
• The stripe shows on the slides as well, so it's not due to the scanning either.

What could be the reason and what can I do to solve it?