I was looking around the other day for a better lanc controller for my z1u. it turns out that panasonic allows for third parties to have a wired connection to control not just zoom, but also accurate focus, but sony doesn't.
it would be nice to have a product that allowed third-parties to come...
there are a number of filters people always use. but threading on and switching in matte boxes and all of that can be a pain. plus you can lose or forget your filters.
cameras like the sony z1u have nd filters in the body that are compact and easy to set. but what about color temp compensation...