...lots of interesting stuff about film and HD...
How do production costs compare these days for shooting on film as opposed to HD video? I would have thought, perhaps naively, that everyone would be ditching film for video in droves.
David
Not sure. Low end drama that was shot on SD DigiBeta (or even DV) is switching to HD video camcorders (HD Cam, XD Cam HD etc.) - but higher end stuff that was shot on Super 16 is moving to more specialised electronic capture which might not best be described as "HD video" - as often they are higher resolution than HD and don't actually generate an "HD video" signal that is recorded.
Doctor Who is shot on Sony F35 (and F23) electronic cameras, and I think recorded to HD Cam SR tape but possibly as unprocessed data rather than normal video? Other shows are using Red, Arri D21, Genesis, Viper etc. and these can all record as digital data - though not always to tape and not always in a format you'd call "video".
The main difference between shooting on HD Video (like shooting multicamera HD cameras or on HD Cam / XD Cam HD / DVC Pro HD camcorders) and shooting 'digitally' on stuff like Red, F35 etc. is that you don't do anywhere near as much 'in camera' processing with the latter and have to create proxies for offline editing based on LUTs used for on-set monitoring (and used as guides only in the grade) The actual full quality pictures aren't really 'created' until the grade in the online - which is a much more powerful process than when dealing with stuff that is shot using standard broadcast cameras (which record a picture that has already been colour balanced, exposed, knee-ed, gamma-ed etc.)
Whilst HD video and Digital capture remove the requirement for film stock and processing, rushes transfer etc. they introduce new requirements for data wrangling, backing up content, coping with proxies etc. - AND you are introducing new technologies that some DoPs are not familiar with.
Some productions have moved from Super 16 to Digital capture (Silent Witness is a good example), some have moved from DigiBeta to Digital capture (Doctor Who), whilst other productions that would have been shot Super 16 have moved to either 3-perf 35mm (Tess of the Durbervilles) or 2-perf 35mm (Emma). Some shows have stuck with Super 16 (Spooks) and as a result are not broadcast in HD by the BBC.
When BBC HD launched - most BBC drama was shot on Super 16, and at that time 2-perf and 3-perf 35mm weren't seen as options. Any BBC drama that was being shot for BBC HD either had to be shot on standard 35mm (way out of most BBC budgets apart from major co-pros - though I think The 39 Steps was an exception) or to shoot electronically, either on HD camcorders or using digital capture cameras - so initially almost all BBC HD drama was captured electronically (Bleak House on HD Cam camcorders for instance).