A little idle browsing led me to this site where I found that a dutch company, TNO , has produced the largest photo ever taken! And by Large, i don't mean that it is of humungous size and stretches for half a mile or anything like that!!! A picture's measure of 'largeness' can be in terms of pixels and this picture contains a whopping 2.5 billion pixels :-0
If you're the kinda person who likes some number-crunching, here are the specs of the pic:
Facts and figures about the gigapixel image:
· Number of pixels in final image: 2,487,227,305 (2.5 gigapixel)
· Final image file format: 24-bit colour bitmap
· Final image file size: 7.5 GBytes
· Number of source images: 600
· Number of pixels in source images: 3,537,408,000 (600 images * 3008*1960)
· Lens focal length: 400 mm (equivalent to 600 mm on a 35 mm camera)
· Aperture: F22, Shutter speed: 1/100, ISO: 125
· Horizontal field of view of final image: 93 degrees
· Time required to capture component images: 1 hour and 12 minutes
· Time required to match overlapping images: 20 hours
· Time required to optimise project: 4 hours
· Time required to compose the image: 3 full days using 5 high-end PCs
· Time required to blend seams / correct misalignments / finalize image: 2 days
And the best part of the pictureis that using its megazoom, one can zoom into the minutest corners and that too without much loss in resolutions! Try it out yourselves by clicking on the Image below:

The Picture maybe a copyright of TNO Communications, Netherlands.
Details Courtesy: TabloidColumn
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