sorry IO, it's not a matter of inuitivity. "auto 0.5" does not work at all. i guess you meant "auto $0.5" which gives out: error: Bad arguments for message 'auto' to object 'pix_filmDarwin'
it is [auto 0.5( and not [auto $0.5( (which is illegal in pd) anyhow, you are suffering from the sadnesses of incompatibilities across platforms, as you have pointed out in earlier mails. i just didn't get that you were on osx
indeed. with [rate 0.5( i found a way to get to the result, but it's a pity that it will not work elsewhere.
greetings, max