Macro pictures look cool. Most people don't know how to take them well and are easily impressed by them. Good pictures of small parts can make all the difference in an ebay auction or a craigslist posting. As a mad scientist, I often use it for taking pictures of test results and using it to see details too small to see with the naked eye. Doing a quick measurement of the tap on my screen, my 7 megapixel camera gives me about an 8x magnification when viewed on the screen at full size. For more detail, you need to get into microscopy. That instructable will be coming along soon.
If a picture is worth a thousand words, a good macro picture must be worth&the one thousand and sixty-nine words here.
Since the small photos here don't really do it justice, I have the full size images here:
http://www.bloomautomatic.com/3546.jpghttp://www.bloomautomatic.com/3547.jpghttp://www.bloomautomatic.com/3549.jpghttp://www.bloomautomatic.com/3550.jpg
http://picasaweb.google.co.in/munish4u911ex/MyMicroscope
Awesome photos!
The lens was around 5 or 6 mm in width & fits almost nicely on the phone. The K310i's camera is a little deeper than the rest of the body so it provides the space for the lens to fit. I took it out from an old, 3button cell run, laser pointer. I think it's focal length might be 4 or 5 mm. It has both sides convex, but one side has a little more curvature. Only from one side the pics look uniform, if you try to see through the other side, image is somewhat blurred at the periphery (the 'zoom into' effect)
For now, I have lost the lens somewhere... But I'll do more experiments on this concept & will surely post an instructable. Might have to buy a new laser pointer :P
http://photos-d.ak.fbcdn.net/photos-ak-snc1/v1961/125/109/501707626/n501707626_1864979_2178.jpg - the flowers were only a few mm across.
http://photos-e.ak.fbcdn.net/photos-ak-snc1/v1961/125/109/501707626/n501707626_1864996_7473.jpg - some normal sized ants, on a concrete wall.
http://photos-g.ak.fbcdn.net/photos-ak-snc1/v1961/125/109/501707626/n501707626_1864990_8137.jpg - A grasshopper (dead - stationary targets are much better to get close ups of ;)
http://photos-f.ak.fbcdn.net/photos-ak-snc1/v1961/125/109/501707626/n501707626_1864981_3342.jpg - A little LED light, in the full rez picture you can see the inperfections on the diode itself, as well as the texture of the plastic casing (which you cant see looking at the object directly)
All pics taken on a Canon Ixus 50 w/ CHKD, and they have been scaled down from their original size by facebook.