Rodolfo Paiz Offline Dedicated FM Upload & Sell: On
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Go4Long wrote:
In reality you can make a 40 X 60 print out of an 8 megapixel file.
Yes. If you have a good exposure, sharp capture, and an excellent image that is properly and well processed, yes. Your original 8MP image at 40x60 yields roughly 58 dpi from the original file, with more resolution available by interpolation.
But in reality I can also make a much nicer, cleaner, more realistic, more detailed, richer, absolutely superior, far more attractive 40x60 print from 24 megapixels. The D3x is able to give me a 40x60 print at 100 dpi, which means a lot less interpolation required to reach a given final desired dpi (e.g. 300) and thus an unquestionably better image.
It would require a 54 MP sensor to give you 150 dpi at those 40x60 inches, at which point you could print on canvas at 150 dpi or do a single interpolation pass to get 300 dpi on paper prints.
To get a 40x60 print at 300 dpi without interpolation, just pure and unadulterated pixels, will require a 216 MP image. Now, that image will be overkill for most other purposes... but the example must fit the point to be made. If you want larger prints, then you definitely can benefit from more MP. For other purposes, even 2MP is enough.
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