haha its funny how one assumes things!!

I thought you were shooting off a ski and I was SO surprised when you said you were using a kata rain cover. I have shot off the back off a jetski and I thought you were totally crazy but also very talented to be able to do this!!

Also I am a trained stills shooter with most of my work doing water sports and I have relied heavily on autofocus over the years. I am finding it hard going to adjust to the manual focus that video requires:

long lenses + manual focus + moving subject = hard

Especially true because defraction seems to set in pretty early with this lens in bright sunlight. So modify the equation to long lenses + manual focus + moving subject + wide Iris = hard

If this job were easy there would be cavemen doing it.