Originally posted by Rondec It is pretty obvious that there are two big features that Pentax has that sell it to those who choose to buy it.
1. Optical Viewfinder. You may not appreciate it but there are still a chunk of people out there who prefer to look through an OVF to an EVF. This is a niche that is completely unserved at this point as nearly all brands have shut down SLR production. As to whether or not that is enough of a niche to continue selling Pentax cameras, we will see. All of the camera brands are likely to have to tighten their belts a little, as the camera market seems to have tanked over the last five years.
2. K Mount Lenses. Once again, this is a niche, but Pentax makes and has made a huge number of K mount lenses that are easily usable without an adapter on Pentax cameras. I have posted elsewhere, but just for me to replace my Pentax DFA f2.8 zooms for the Z mount would cost 7500 dollars -- and that isn't even talking about the primes I have accumulated over time. Looking over other mirrorless options, it seems like they have similar pricing. Every brand has good lenses, but it isn't until you look at pricing between different brands that you realize that premium lenses come at a cost.
It is really hard to argue about ergonomics -- most of the people here like Pentax's ergonomics, but then we shoot with their cameras and so shooting with Canon feels foreign. As far as additional features, Pentax needs to include those. Assuming you have a sensor capable of decent frame rate, it is also capable of video capture. It is foolish to leave something like video off because there is no cost savings to leaving it off, but there are probably photographers out there that would choose not to buy a camera because it doesn't have video capability, even if they never use it.
I don't know what Pentax's future is, but I do remain optimistic. They have a nice niche, they have minimal competition, they are part of a bigger, diversified company (Ricoh) that seems committed to producing SLRs and they they have a fairly lean operation. I think that they are better designed to more forward in a falling market than a company like Nikon, where the only solution seems to be to sell the same gear for higher prices.
The fact that Pentax chose to stick with two very important features (optical viewfinder and K mount), is reassuring for loyal Pentax customers.
In terms of ergonomics, I find that Pentax and Nikon (older F-mount series) are quite similar compared to other manufacturers. For many years I used Nikon. I purchased Canon and Sony gear and shot with 3 systems at the same time! Canon truly is foreign in terms of ergonomics, Sony is somewhat similar to Nikon.
Fast lenses fetch premium prices in any brand as you mentioned. That's why having the ability to use lenses you have spent good money on in the past with newer systems is a major plus. I had amassed a bunch of Nikon lenses over the years. I was really disappointed that I couldn't merge them over to newer Nikon Z bodies (AF does not work with older lenses on newer Nikon Z mount bodies). Lucky for me that Canon produced an inexpensive EF to RF mount adapter that let me use my older EF lenses on their R bodies! While I didn't have as many Canon lenses as I did with my Nikon lenses, the ones I did have worked flawlessly; even AF!
As for Sony lens availability, I personally find it a bit misleading. While there are several 3rd party manufacturers that make lenses for Sony, they are all pretty much very similar focal lengths. For example, I need a compact- sized, 16mm full frame prime lens for my Sony A7c. It doesn't exist! No one makes it! I had purchased the A7c as a full frame, compact travel camera. It came with a compact (slow) 28-60mm kit lens, so I purchased a Tamron 24mm f2.8, Sony 40mm f2.5 G and a Sony 85mm f1.8 as a lightweight travel kit. The 24mm wasn't wide enough, so I bought a Tamron 20-40mm f2.8 as my main travel lens. I didn't get the Sony PZ 16-35mm f4 because of its slow minimum aperture of f4.0. The closest I could get to a 16mm was with either a Sony 14mm f1.8 GM (ridiculously expensive), a Rokinon AF 14mm f1.8 (questionable build quality and reliability issues), a Tamron 17-28mm f2.8 (too close to 20mm on the wide end and not very compact), or a Sigma 16-28mm f2.8 (pricy and not very compact). Small, fast, AF lenses for Sony are very scarce which is a shame because Sony bodies are pretty small, especially the A7c.
I have been tossing around the idea of selling all my Sony equipment and either buy more Canon lenses, or buy into Pentax. I don't think I'd get rid of my Canon gear, but I would replace my current Sony travel gear for Pentax.