[3.45 μm] Had troubles finding a card that would work with an Elgato CamLink 4k. This worked flawlessly.

[32.2 Hz] I shoot low-light events in Las Vegas: Concerts. Indie wrestling. Pagan rituals. The other cameras in my stable were proving insufficient; I needed more stops. I bought this with the hopes of getting more stops.


I can now shoot deliverables at ISO204800 (attached).


The K3iiiM is my favorite object. Thank you, Ricoh.

[32.2 Hz] Installed this USB 3.2 card in 14 year old HP Z400 workstation, very impressed. Needed the speed benefits of fast USB and this card provided it.

[USB 3.0] I love where this camera takes me. Beautiful results straight from the camera carries me back to the 70's when I shot Tri-X almost exclusively.

[3.45 μm] I am very happy that I had decided to get my hand on this camera. Being an ardent lover of B&W, this camera brings the best results concerning B&W than any other color camera I have used and then removing the colors in Photoshop. There is absolutely (IMHO) no possible comparison, if you really know how to work in B&W. I wish I could upload here some of the photographs I have made using the Pentax K3 Mark III Monochrome.

[3.45 μm] I have had this camera for about 4 months now and I am very very happy with it. I have been using a mirrorless full frame camera for the last 5 years, but the prospect of a monochrome-focused camera was too good to pass up. I specialize in monochromatic images and have a lot of success selling them in a gallery in Juneau, Alaska. This has brought an excitement to my artwork that I haven't felt in some time. It really brings a film-grain richness to the images, the noise is handled beautifully, and the dynamic range is excellent. I ended up selling all of my Sony FF gear and am all-in with this beauty. I also print a lot of cyanotypes from the files and this camera has improved my digital files I use for the digital negatives I use in the process. Thank you, Pentax, for thinking outside the box.

[3.45 μm] I posted the most-recent review of this camera, where I tried it and loved it, but fretted over its autofocus performance--so returned it.

That was a mistake. The black-and-white quality from this camera brought it back to me. There's just simply no way to easily replicate the results by editing color. I've spent lots of time trying to do this. In some scenarios, I get close, but at the expense of much effort.  If you shoot lots of black and white, you will not be disappointed with this camera.

And since I've had more time with the camera--and have used a wider variety of lenses with it--I've learned that the autofocus is better than my initial impression, snappy-fast on some lenses, in fact. If mirrorless AF is considered a 10, I'd give this an 8.

[32.2 Hz] To preface this story, this is my first DSLR and my first Pentax.
Before this I had owned two mirrorless cameras. 
First I started with a Lumix S1 but was looking to upgrade and convinced myself to sell everything to buy into the Fuji GFX system.
To my (and many others) surprise I was dissatisfied with not only the build quality of the 50sii but the images I was creating with it.
Something just didn't look right. I couldn't place my finger on it but things looked... sterile? 
I thought a digital medium format sensor was the answer to replicating my medium format film cameras but alas, this was not the case.
I wanted to capture a black and white film look with a digital camera but couldn't afford a Leica monochrome.
It was a risky move on my part but I sold my GFX after doing a lot of research into the K3iii monochrome.
The first day I took it out I knew I had made the right choice.
Images from this camera are pure magic and have tricked many people around me thinking it was film.
Match this sensor with a M42 adapter and throw some Super-Takumar, it looks identical to B&W film.
Love shooting this thing at night at ridiculously high ISO levels.
The build quality is like a tank. View finder is bright and easy to focus. Speaking of focusing, the auto focus is faster than some of the mirrorless cameras Ive used.
I don't ever want to go back to mirrorless after using this gem, there's nothing like framing your image through the lens.
My only complaint is it takes a second to get used to exposing correctly. You need to be very mindful of blown out highlights.
Images match that of any full frame camera I've ever used.
I love this thing so much I can only hope Pentax will release a full frame monochrome camera in the future to compete with Leica.
Anyway, if you love B&W photography then this is the camera for you.

[USB 3.0] For all of us who cannot spend the money on the Lecia, Pentax gives us a wonderful Monochrome digital camera. Based on the K3 chassis it is a Monochrome only Pentax K-3 Mark iii. It is an APS-C professional-level camera. With excellent ergonomics that Pentax is known for. Yes everyone is dashing off on mirrorless but the bright, eyeglass-friendly viewfinder is wonderful. With a nice catalog of lenses, this is a black-and-white camera that can be used in any situation. Finally black and white with excellent fine resolution, usable high ISO, and professional grade. The images have fine detail, highlights, and shadows. Easy-to-use menus and settings that address every situation you may encounter. For those who remember all those color filters for black and white are usable to manipulate the the images before tripping the shutter button.
Two things to consider. LCD panel does not flip up or rotate. I use a Ref a right angle viewfinder by Pentax. It works well on all the 35mm Pentax cameras and some other brands. It rotates and has a 2x setting which is nice for macro. The other thing I have noticed is the very sensitive shutter button. It has a very sensitive and short motion to trip the shutter.
I can highly recommend this camera to anyone who wants to do Monochrome. You will not be disappointed
Monochrome is far from a niche place in photography. You see it in many venues. It is not limited now to the conversion of color digital or shooting film. We now have a well thought out Monochrome from Pentax at a more palatable price than Lecia.

[USB 3.0] Yes it's sharper than a Bayer color sensor. Yes it's high ISO noise is much much better. But the only reason for its being is the tones are accurate and what they should be. It's the difference between REAL black and white and a computer simulation of black and white, literally. It's digital black and white film. Worth every penny if you can appreciate what it is.

And Pentax ergonomics are the best in the business. This UI is so good, I never have to go into the Q menu for anything. I wish the playback button was in the same place as the K1 and that Live view was a button like the K1, but those are minor quibbles in a brilliant camera interface. The SLR viewfinder is wonderful after 5 years shooting mostly EVF's. I didn't realize how much better it really is.