Super high-res photo to test print
Out of context: Reply #12
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- Mojo0
I am going to print to a sheet of 4x6" photo paper on my epson R220.
Supposing screen/print DPI is equal, here is a list of the dimensions at various density.
300DPI: 1800x1200 pixels
600DPI: 3600x2400 "
1200DPI: 7200x4800 "
1440DPI: 8640x5760 "
2400DPI: 14400x9600 "
3600DPI: 21600x14400 "
4800DPI: 28800x19200 "
5760DPI: 34560x23040 "Okay so the theoretical limit of my printer is 5760DPI.
That's printing an image with dimensions of 34560x23040 - a 796 Megapixel image.
A 4x6" print:
At 3600 DPI is 311 MP.
At 2400DPI is 138 MP.
At 1440DPI is 49 MP.
At 1200DPI is 34 MP.
At 600DPI is 8.6MP.So really, you can only get 600DPI prints (4x6) from 8.6MP+ digital cameras.
I'd love to try printing 4x6 @ 5760DPI, but I don't think a .7 gigapixel image is easily available.
That hubble image is 18000x18000, which is 324 MP. So I can print this at 4x4" at 3600DPI.
I just want to see the results.
Illustrator cs2 lets me print a max of 2400LPI. LPI means lines per inch, totally different measurement.
The whole point of this is just my curiosity. Our printers are now capable of much more detail (supposedly) than our cameras can capture. (well you could print your 5MP photo at 1 inch and it would be 5000DPI or something, haha.
Of course, more reasearch is needed into how printers work, because they don't print pixels...