Possible Syncproblems when shooting infrared

[discocalculi]

Long time no C.

I was out enjoying the sun today and came back with some pretty weird exposures using custom white balance and a Hoya r72 filter. It looks almost as if there's some sort of sync problem. Not sure how to reproduce or what to make of it, but perhaps something to dig deeper into.

5D Mark II, 24-70 f/2.8 I, Hoya r72. Images straight from camera via Pixelmator....

[discocalculi]

A few weeks have passed by since last post and I still have problems with the weird bugs when choosing Custom white balance and shooting in bulb mode using infrared filters. It seems like the pictures does not come out the same as if I shoot with higher iso and faster shutter times.

Any hints would be greatly appreciated...