What is this? 1D Mark IV artifact.

What is this strange ghost by the ball? It looks like a double image from the ball, but I don't know if this is a camera artifact or a lens artifact.

Anyone have any ideas? I was shooting through a fence with the lens centered in a diamond hole and the hood pressed against the chain link.

1D Mark IV with 100-400.

400mm
f/5.6
1/1250
ISO400

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Has it happened on any other shot's you have taken?

I'd blame the nature of quantum mechanics.

TTk wrote in post #10231086
Has it happened on any other shot's you have taken?

Nope. I have never seen anything like this before.

I was thinking that I got a double image of the ball due to some freak of the fence interacting with the lens, but as I look at the crop the seams on the ghost ball are not in the same location.

Thats strange...

Wasn't there a ghosting issue when the 7D first came out. Something about the buffer not being fully cleared when shooting images rapid fire if I remember correctly.

was this during practice?

mikekelley wrote in post #10231257
was this during practice?

No, bottom of the 1st. Also, if that ghost was a real second ball being thrown across the diamond it would have nearly hit the pitcher in the head (note that the balls appear to be about the same size, so the ghost is not a second ball far behind).

gjl711 wrote in post #10231245
Wasn't there a ghosting issue when the 7D first came out. Something about the buffer not being fully cleared when shooting images rapid fire if I remember correctly.

Well unless the kid in the picture has a NASTYYY curve ball...i dont think that would be possible considering the placement of the ghost.

I'll give ya $500 bucks for the body, but only cuz I like ya it's probably a write off anyway...............

Bradfordguy wrote in post #10231295
I'll give ya $500 bucks for the body, but only cuz I like ya it's probably a write off anyway...............

This was something like photo 4787 from the body and the first time I ever saw such a thing. I guess I'll just take another 5000 shots and see what happens.

And youre 100% sure that another ball wasnt going across the field?

Is it possible that is a really well placed reflection off of the structure in the BG?

Naah, it's clearly an image of the ball. You can see a red thread pattern on it like the original. I would email this to Canon customer service. Unless they hear about these bugs they can't produce a fix for it.

My money would be with your guess on some weird interaction of the fence that you're shooting against there.