If the market shrinks, there won't be room for both DSLR and mirrorless. DSLR will have to go. We will see DSLR lines be discontinued. R&D, production, and sales will be consolidated around mirrorless. You're a fool if you think that the ILC market will go away. It won't. It's the DSLR market that will go away. Plus, I think the manufacturers are quite confident about mirrorless, particularly FF mirrorless. Just look at what all the manufacturers are doing:
We disagree.
If the market shrinks, R&D dries up. You don't waste money on R&D for a market that will soon disappear. It's just not a good long term investment.
We'll probably see a few more models of ILC come out, as money on development has already been spent.
Think about this: Sony, Nikon, and Canon all introduced new FF mirrorless cameras this year. Canon and Nikon started new FF mirrorless lens systems. Nikon introduced two FF mirrorless bodies. Panasonic will be introducing two FF bodies next year. Sigma will be introducing a FF mirrorless body of their own. These companies aren't stupid. They know where the market is going, and they know there's a market to be pursued. Sony, Nikon, Canon, Panasonic, Sigma, Leica collectively have a MUCH better understanding of the market than you do! You're just some nobody who is spouting insecure nonsense. These camera companies are working off of real data, real projections, real understanding of the camera market, and they are spending real money on pursuing the sales opportunity that they all see. You don't have 1/100th the information they have.
They know the mirrorless market has a few more years left, and it throwing existing DSLR technology into a mirrorless body doesn't require a lot of R&D.
Throwing out a few mirrorless bodies is a good way of squeezing a few more dollars out of a disappearing market.
I wouldn't expect much in the way of new technology in development.
In terms of the recent mirrorless introductions from Canon and Nikon, those cameras have been in development for many years.
If these companies were serious about investing in mirrorless, we would see a long term roadmap of the sorts of bodies and lenses we should see in the future. Such a roadmap would make consumers feel more comfortable about the new platform. A lack of public roadmap suggests a lack of commitment.
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Arguing over whether mirrorless or DSLR will survive is like arguing over whether 35mm film or APS film will win. After all, back then we were all sure that digital was a novelty, and that digital cameras would never displace film.
APS film is gone, and I haven't seen much R&D spent on film cameras.