[Adrian Krol]

Or even simpler…. i will dupplicate the still and animate it on top of the echo-ed layer, that should do it. Simplest solution is easily overlooked. Still doesn’t solve the mystery for me but hey, if it works – it works.

Again thanks for your time and attention.

[Adrian Krol]

Roland, David,

Thank you very much for your responses. I did read up on the collapse transformations and removed the adjustment layer as Roland suggested. Unfortunately this did not solve the artifacts that I saw and continued experimentation. Turns out it is not the mask showing through: instead of using mask and feather to apply the fast blur, I used a B/W ramp and matte to blur the edge of the image. It seems that there is some kind of interference of the echo effect with the blur, showing a distinct line unexpectedly on the top image. When I find the time I can post some examples – I am still confused on what is happening there.

For now, I will try the Time Blend FX option as suggested by David to see if I can get better results.

Again, thanks for your time – I learned something new once more.

A.