This is my 7th digital camera not including mobile phone cameras which I also use frequently because of the convenience. First I must say that the pictures on Amazon do not do justice to how small and light this camera is. With a small camera bag it goes over your shoulder and you hardly notice it. I also have an Olympus 8M SLR. My main reason for buying this camera was to avoid having to carry my SLR on long trips with 2 lenses and fiddling about changing lenses when trying to take good photos is always a pain. I have certainly achieved this objective. And no power supply to carry either (if you have a computer with you). Unfortunately the charging cable is not the new mobile phone standard micro USB at the camera end, but at least it is the same as my SLR cable. For a small camera with a good lens this is a great pick.
As written in other reviews, this camera is let down a bit by the lack of RAW image storage. The JPG processing seems in general to be fine and the results are stunning - especially on high zoom. The autostitch, once you get used to how it works, is very effective and whilst you might get better results on a computer, who has the time to do so much post processing? I have found a couple of photos with bright green and bright pink where the results looked a little artificial due to the processing but otherwise I can't really fault the results. For the first time with a camera (on a tripod) I managed to take a picture of the Orion constellation and the result is pretty good. The pictures are around 5-6M each - this compares favourably with the 14.4M for my SLR (RAW) but I think I'd still rather have the RAW. I have taken about 700 pictures in 2 weeks with this camera and never used more than 20% of my 16G SD card. The battery has never expired either, although I am charging it every day that I use it.
I have been using this camera in Bangkok, Thailand, where it is very humid outside. One evening I took it out and the lens misted over, but when I wiped the lens with a cloth it was still misty - the moisture had penetrated the camera itself. I understand that this is impossible to mitigate with manufacturing design - what I have learned to do is not to wipe the lens but to wait until the lens de-fogs and then the internal part of the lens is clear as well.
The night time capability of this camera is impressive and the flash works well too. It is unbelievable how far they have come since 2006 when I bought my SLR in terms of low light performance.
The movie mode is great too and I can dispense with a small video camera I was carrying around too. The SP-800UZ is small enough to carry around when you want video. The only slight disappointment here is that you cannot record sound and use zoom in the same movie.
So overall, comparing this with my other cameras, I would much rather travel with this one even though my SLR gives slightly better results (with a bit more patience and in good light).