processor, sensor, optics etc are all unchanged so it's still going to deliver the same end result when it comes to video performance so nothing you'd be able to pick in A-B testing, we have some minor tweaks that have happened in every production so far, will keep doing that as we find ways to improve things or do them better, it has actually driven the cost up with changes we've made, we haven't passed that on as it's all stuff that has needed doing in my opinion, all changes have been changes for the better, we're not about cutting costs or trying to find ways around problems, just want to make better products