Over the last few years I have purchased quite a large number of digital cameras, and I came up with a list of questions one should ask before buying one.

1. Focal length
If you are familiar with older cameras, you should always ask for the 35mm equivalent of the focal length of the zoom lenses. With most models, this is printed on the camera itself, but you should ask, just to be on the safe side.

2. Return policy
Depending on your country, there could be a minimum mandatory period in which you can return the purchased item. Some stores might charge you a restocking fee.

3. Highest resolution
What's the maximum number of megapixels this camera can shoot at? Is that resolution enough for me if I want to print the photos in a larger format, say, A3?

4. Distinguishable features
How is this camera better than others? Does it come, for example, with in-camera red eye removal? Does it come with direct-to-printer support?

5. Maximum storage space
For any models with less than 1GB of memory you should buy at least one 4GB or larger memory card. With the constant decrease in the price of the storage media, you have no excuse to miss taking a great shot due to lack of disk space.

6. What accessories are included with the camera?
Do I get a data cable, to transfer the pictures to my computer? What about spare batteries or extra memory cards?

7. Software
Is it Windows Vista compatible? Even if you are using XP at this moment, you might consider upgrading to Vista in the future, and you wouldn't want to find that your camera is not supported. Also, you should ask whether it is automatically recognized by the operating system without installing any additional drivers: you never know when you need to download the photos to a friend's or colleague's computer, and you will want to be able to do it without using a drivers CD.

8. Warranty and extended warranty
How long is the warranty period? Does it cover both labor and spare parts cost? Can it be renewed or transferred to a third party? If so, at what costs?

9. Service and support
If I get stuck using it, can I call someone for help? Should the camera break down, is there a local repair shop where I can take it, or do I have to mail it to some other location?