I have not seen a review of the SD400 so far.
Here is a review of the SD500:
The quality and detail of the sample photos is excellent.
From the specifications, it appears that the SD400 is about the same as the SD300, but with 5 megapixels.
The SD500 appears to be set apart from the other SD cameras. It is slightly thicker and appears to have a different lens.
I read somewhere that the SD500 has the lens from the S500 camera. And that is an excellent lens.
The SD500 has a more powerful battery than the other SD cameras.
If you are not in a big hurry to buy, I would wait until some reviews of the SD400 show up ... Then make your decision ... SD400 or SD500.
I am a 'point-and-shoot' photographer, looking to buy a new camera. In the camera I was looking for the following:
- great picture quality for day AND night shoot
- decent optical zoom (at least 3X)
- at least 5 MP, (actually I want to be able to get 8"X10" good quality prints, and sometimes larger ones if I want to. Should I stick to the 5 MP or go higher?)
- lightweight, and sleek design
- decent video recording
Keeping in mind the above, I found the Canon SD400 to meet both my specs and budget. What is the general feeling about the SD400? Are there better 5 MP cameras, that are sleek and lightweight too? And finally is it worth spending the extra $100 to get the SD 500?
Thanks much in advance for answering my questions.