[ElJamoquio]

Having used it for several weeks I'd say it's too heavy for general use. You need a tripod.

The guy has 66 and 67 cameras now. I think he'd be OK, or at least understand it.

I was actually surprised at how light it was. Good ergonomics? Who knows, but I wasn't tired after holding it for a while, and I have left shoulder problems that usually means I fatigue very easily.

[RonHendriks1966]

Yesterday I got in two prints on aluminium sized 60x80cm (23,6x31,5 inch). One made with the K-3 (DA*55mm) and one with the 645D (D-FA*55mm) amd gues what:

They where both great!

As to general use:
Not Always to easy and I would recommand to use a monopod more then just on occasion, but you can do great things with the 645D

I used the 645D for 15 days some time ago and made a user review:
645D userreview in Dutch with 85 images!

[itshimitis]

I find the 645D very easy to handhold for long periods. The ergonomics makes things much easier. The right grip is just so comfortable. Ok, so it doesn't go up to ISO 6400. A I bothered? No. Ok it's not as flexible as the Nikon system I have, but if you want to gett he best out of the D800/e, then you'll need to use a tripod on many occasions too.

[donesteban]

The 645D ist a good general use camera. Unless

• You need very fast AF; especially AF-C.
• Want a small camera
• Need a very wide anlge lens. 35mm is affordable, 25mm ist expensive, but nor really as wide as 12 or 14mm on a D800.

I am using the 645D for many things. But there are some exceptions. My small digital camera is the K-01, especially in the city it is much less obvious that I am taking photos, than doing the same using a 645D.
People photos: I don't really like taking people photos, and I am not good in just doing one click and catching exactly the right fraction of a second. Thus, when I have to take photos of people, I take a lot of photos, and my 645D is simply too expensive for this, as the shutter is only designed for 50k shots. Also, in some cases, I needed better AF-C. Not often, but sometimes it happens. I cover people photography and fast AF-C by an old D2x.