Hi there, a few thoughts from me:
Please let me know your thoughts on the destiny of film photography. For example, is it worth the investment of perhaps several hundreds, even thousands, of pounds in film equipment?
No, not worth investing thousands these days. If you love film £500 GBP will buy you a fine 5x4 and lens or a Mamiya RZ67 and lens if you want to go down the 120 route.
The only area where film is still used primarily in very large quantities is cinema for capture and dup. Fast forward 5 to 10 years and I predict that newer incarnations of cameras like the Sony F23, Red One, Arri D21 will replace most film use, and more cinemas will have digital projectors. Depending who you ask, S16 is already on the way out.
Are there future advances to be made in film emulsions and papers?
Yes, but not if people don't buy them. Arguably 35mm dup for cinema releases could go back to a dye transfer process for better colours but it is not worth the cost, for purpose a 4k projector is fine. A new cinema will have a digital projector, not a new film projector.
I suspect that most development these days is in the direction of efficiency and alternative methods of production rather than reinventing the wheel. The raw materials needed for film are increasing in price, so being efficient during production is key.
Advances will come in the inkjet paper side of things, but I doubt you will see much chance in silver b&w paper in the next 5 years. A new manufacturer may come along and offer a long lost paper type again, but nothing new, what is the point, most people are shooting on digital now, not film.
Is film photography still a viable proposition in the commercial arena?
Yes and no. Yes in the sense that the quality can be there (e.g. 120 film), but no in the sense that speed, convenience and efficiency are not there. If you photograph landscapes and blow them up to huge sizes then you can use 5x4, as your work does not require speed. If you shoot fashion, or news etc, digital is the route. I suspect a few photographers like Ross Halfin will use film for more years to come, but digital is the future. With margins being cut, added costs of processing, lost time etc are a no no for most businesses these days.
Which medium do you prefer (film or digital, and why?)
Digital these days to be honest, because cameras have reached a level where the quality is as good as film, and we have high MP counts. I can print 20x24" prints from my 5Dmk2 which look amazing. Before I would have had to go down the 120 route for something similar. A bit more exposure latitude would be great but I can live it things as they are. A 50MP MF Back produces stunning images so quickly and easily, time after time.
Film is now expensive and it can often be hard to find a good place to get your films processed, to a good quality level too.
Are there more advances to be made in scanning and/or printing?
Plenty, but you can't scan what is not there in the first case. Modern scanners can resolve all the usable detail that is in film these days. Again I don't see too much chance in this area as there isn't the demand. A scanner in 5 years time isn't going to produce a scan that is much better than top machines today. The pace of chance for scanners has slowed down in recent years.
Printers have come on in leaps and bounds, but progress has slowed in recent years too . Look at the difference between Epson 2100 and R2400. Compare a R2400 and R2880 and the jump is much much smaller. Expect things like larger ink tanks, maybe better gloss printing etc, but not amazing changes in print quality as quality is already there.
To summarise, I believe they key word is maturity, 5 years ago the digital world was still rapidly changing and each release of a new camera, printer or scanner brought great increases in quality, speed or something else. These days you are not seeing the same. Things are getting better but at a slower rate.
In 20 years time I may be able to buy a 100MP 35mm DSLR, but it is being waited if I only print 10x8 prints and don't use a tripod or great lens.
In the next 5 years the biggest changes will come in video photography, not still photography I believe. Expect to see more >2k cameras, using some form of flash drive, with better codecs, larger sensors, more streamlined workflows, raw options, new lenses etc etc. There will be more convergence between the traditional DSLR and video camera too. I think it is a very exciting time if you work in video with some many changes round the corner.
Another point, film uses Silver based compounds. Silver is not classed as a heavy metal, but environmental laws and regulations are being tightened, and will only continue to do so in the future. What could kill film off in the future are changes to environmental laws and the actual cost of raw materials, as I suspect there will always be some demand somewhere.
The days of a business continuing to produce something because it is nice to have are long gone. Look at Kodak and Kodachrome, it was killed because demand was not there at given prices and existing processing turnrounds. Once we start to see massive drop offs in demand for cinema dups, the remaining demand needed to keep film prodution plants open around the world may not be there, who knows.
I would not be surprised if in 20 years time, Kodak had stopped making film, and the only remaining makers were smaller specilist independents ( I would be surprised if 16mm makes it another 10 years).
Derrel above sums it up very very will if you ask me when he says "The point, and I make it in total seriousness, is that film photography's future is that of a small-scale, niche activity within the larger society as a whole."