Excerpt: This camera is every bit as good and even better than the one's in line before it. I do weddings and families, no more double shots to make sure every thing was ok with the smiles and eyes open. I've been using the Pentax 645 for almost 20 yrs. and it has yet to fail me. One thing that bothers me is that it would not take the 64GB card, may need an update.
Pros: Easy To Use, Fast / Accurate Auto-Focus, Good Image Quality, High ISO Performance, Large Clear LCD, Quiet
Excerpt: I bought this camera 18 months ago second hand but as new from a US retailer. Since I bought it I have run 6 different cameras alongside each other including a full frame Sony a850 and various high grade lenses. My 35mm DSLR cannot compete with the 645D and the Sony system is being sold. I am also selling an infrared camera, leaving only the 645D, a serious (Foveon sensor) compact, one infrared- DSLR and a point and shoot for casual and clinical work (I am a medic).
Pros: Easy To Use, Fast Shutter Speed, Good Image Quality, Large Clear LCD, Quiet, Superb Legacy Lenses
Excerpt: and it's astonishing. 70% of my shots are portrait/fashion/environmental/lifestyle, and the rest is whatever grabs me (street/cityscapes/landscapes); my main box was a Canon 5D Mark II for the past 4 years.The 645d's images are discernably different--note, "different" and not necessarily "better", though many are--than those I've taken w/ the 5D. 1st, the light capture makes for crisper & more nuanced images.
Pros: Attractive, Decent battery life, Easy to grip, Easy To Handle Despite He, Easy To Use, Fast / Accurate Auto-Focus, Good Battery Life, Good Image Quality, Large Clear LCD, Quality Build, Weather-sealed
Cons: Heavy, Large Nameplate, Poor Image Stabilization, Poor In Low Light
Excerpt: Bought 645D in January 2014 and immediately tested it in Zion (I shoot landscapes only). Still going through the files but I can say already that the image quality is superb and files are very flexible! Before buying into Pentax 645D I had extensively looked through files from d800e, 7r, p45+/P65+, IQ160 and IQ180 and I could not see any substantial increase in color depth or dynamic range in Phase backs, may be except for IQ180.
Pros: Easy To Use, Good Image Quality, Very good battery life, Very Good Viewfinder, Very quiet shutter
Excerpt: I'm using this for landscape and portraiture work, but it could be used for some light reportage work as well. The files are great. I own a D800 too, an a lot of people like to compare the two. It's a silly comparison - the files from the 645D, and the look you get with medium format lenses makes this a totally different camera. The only similar thing is the number of MP. The quality of the pixels though - 645D hands down.
Pros: Easy To Use, Good Image Quality, Large Clear LCD
Excerpt: The 645N has more features than most digital cameras, yet is very easy to use. The images are 3D like, and can be easily enlarged on my 36 inch Canon printer. I think Pentax has a real winner for the advanced amateur and the pro. I use my 645N in outdoor photography and am very happy with it.
Pros: Easy To Use, Fast / Accurate Auto-Focus, Good Image Quality, Good Image Stabilization, High ISO Performance, Large Clear LCD
Excerpt: I bought this item used before one year ago. It operates perfectly. the image quality is nearly perfect. It gives me the idea that i am shooting with film while i am getting best digital photography quality.
Pros: Easy To Use, Fast / Accurate Auto-Focus, Fast Shutter Speed, Good Image Quality, Large Clear LCD
Excerpt: I purchased this camera to make use of the excellent lenses I owned for the previous film version of the 645N. The images with this camera are far superior to any other digital camera I own. One web site compares the quality of 40 megapixels to a 4 x 5 camera. The dynamic range of 12 stops means I can take a photo with sunlight streaming on one side of the image and the other half in shade and reveal detail throughout. It means fill-flash is just not needed.
Pros: Fast / Accurate Auto-Focus, Good Image Quality, High ISO Performance, Large Clear LCD