How big is a Gigapixel Photo ?

Started May 4, 2012 | Discussions thread
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nitroman Regular Member • Posts: 142
How big is a Gigapixel Photo ?

I'm looking into making some Gigapixel images.

I intend to use my Canon 5D2 to stitch together multiple frames and make very high resolution digital images.

How big does the image have to be, to be classed as a "Gigapixel" image ?

How many pixels ?

My 5D2 is about 21MP. How many MP would a Gigapixel photo actually be ?

I've searched on the net but there seems to be conflicting advice.

Thanks !!!

 nitroman's gear list:nitroman's gear list
Canon EOS 5DS
Canon EOS 5D Mark II
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