Originally posted by Rupert A few will come back to Pentax, but most are involved with C or N now and will stay put.
Yes, sort of... People who gravitate to online forums tend be gear centric and more loyal to a brand. (funny spell check tried to make centric = eccentric. hmmm). Anyway, I suspect you are correct for people who have invested a lot of money in one brand or another. However, IMHO, the vast majority of camera users are not as brand-centric as we might think because they are not well represented on various forums. They do not waste time online arguing that a half stop improvement in this particular whatsit will make a difference, instead they are out taking pictures and the picture is more important than the gear.
Some examples:
1) When my dad needed (wanted) a new camera he went to Ritz or Best Buy and told the person there what he wanted. Whatever they sold him is what he got. Not once, but every time. And thus he has used Konica, Minolta, Sony, Nikon and Canon that I remember and probably some I forget. Bought the camera and lens and never bought anything else. I suspect there are many, many people like him.
2) I have a friend who is a very, very good landscape photographer. As in he could be professional if he wanted to. He has as long as I've known him been a solid Canon users. 5dmk whatever at the time. When the D800 came out he dumped his Canon gear and bought the D800 without a backward glance. Because he was positive it would give him better results for what he did.
3) I have an online friend who is a very good photographer / artist. Her work is more digital art than photography but she does both. When someone asked what camera she used she had no idea. She had to go and check. Someone asked her what lens she was using, she had no idea. Seemed even confused that "what lens" was a question. To her the image and concept is everything, whatever tool is used is really immaterial and not worthy of notice.
So, when I see comments that Canon or Nikon or Sony shooters will not change brands, I have serious doubts about those comments. Provide a compelling reason for them to change and many will. Brand loyalty or even investment loyalty is not as common with the mass of photographers as it with the subset of photographers who hang out online and argue about which f/1.2 lens is better.