I am thinking about uploading camera pics via web on mobile phones.
It would be much better if by somehow we can invoke the phone's camera when clicked on fiile upload.
<input type="file" name="cameraphoto">
Clicking on the button would help to take a snapshot and upload it.
Any ideas for the HTML?
You need a lot more than HTML for this to work. Are you a programmer? If not, there are plenty of apps that do this sort of thing, like Instagram.
I think - http://developers.mobile.conduit.com/Reference/platform/camera/captureImage.aspx will be useful.