Originally posted by Uluru It is not a professional camera setup by market's definition. It is very fine, competent, affordable, so forth, but no pro.
For anyone still following this thread, my final two cents, to a large degree regarding the term "pro" in reference to cameras. Professional is a loosely used adjective that defines the camera as one capable or frequently used by a hired or independent photographer using said equipment to make money.
I have learned through experience that some of this is technically valid and some of this is not. I started my pro career in "Hollywood" in the ʻ80s with four Minolta FSLRs. I switched systems for two reasons: 1) all four cameras and six lenses were stolen; 2) my own insecurity dealing with clients that superficially judged the photographer by their equipment and not their images. When I switched to Nikon in the late 80ʻs, it was because of these two reasons; not because I could not get pro images from Minolta cameras.
The Minoltas were replaced with two Nikon F3HP bodies, but I also wanted a lightweight backup camera and got the entry-level N2000. The salesman chided me because he said there was no way the cheap plastic geared N2000 could be trusted on a daily and nightly grind in the elements. My first pro-level F3HP needed repair under warranty on a cold night shooting on location in Minnesota. Both F3HP have been sent in for maintenance and repair over the years, but that N2000, which has shot an equal amount of actuations, has never failed and somehow never needed what should be routine maintenance.
Overlapping this 35mm story is my Pentax 645 which I also acquired new in ʻ86. Iʻve used it both for my fine art and pro work for 30 years. This was at a time when Hasselblad dominated the pro MF market. I did my research, and met with a photographer that worked for THE top intelligence agency in my country. They could easily afford any system and to my surprise, they exclusively used Pentax cameras and lenses at a time when Hasselblad, Rollei, Leica, Contax, Mamiya, and Bronica were all considered pro MF systems.
So what makes a camera professional? Well it does need a system of lenses, accessories, and a certain level of quality and durability. But itʻs not determined by bloggers, consumer reporters, a web site, or ads; itʻs pro if it is used professionally by photographers. The 645Z and K-1 are awesome cameras. Perfect? No. Good enough for a pro? Let me just say that if it isnʻt, Iʻd question the photographerʻs skills, not the camera specs.