Super high-res photo to test print
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- Mojo
Hey guys, I have a printer that prints 6000dpi or something silly, so I'm looking for a super high-res photo to print on 6x4 photo paper.
Purely for testing.
Any suggestions?
Thanks.
- mbr0
1. Take a really hi res picture
2. Scan a picture in at hi res
3. Make a hi res image in PS.
4. Buy a hi res image from a stock photo placeWhat kind of printer?
- Mal0
- elms0
- Mojo0
Yeah, it's an epson R220 photo. Results from ilustrator are fantastic on photo paper.
The first link looks good, but download speed is 3KB/s (23MB), and the second doesn't look suitable really... but thank you
- elms0
there are more:
- _me_0
get off and milk it.
- lmao0
I don't think you really need a 3200 dpi photo. An imagesetter, for instance, has extreemely high resolution to yield dots of varying sizes to create halftone screens--these screens rarely exceed 200 lines per inch, for which at the most you need a 400 dpi photo. I'm guessing that anything over 300 dpi in your photo will not yield a different result on your printer.
- Mojo0
Hey I'm quite aware that after a certain point difference in DPI is neglible. And I CAN notice between 300 and 600 dpi.
so
duel or stfu
thanks for the links guys..
- mbr0
I still don't completely understand how the dpi in your psd relates to the dpi for your printer. I mean I do, but it's not a 1 to 1 relationship, so how do you explain it?
You can see a HUGE difference between 360dpi and 720dpi, not so much at 1440 dpi. Then lpi is a different ball game altogether.
You can also notice a difference between a 100dpi psd and a 200 dpi image, and then not so much at 300 dpi.
I just know what works and keep it above that.
- 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...
- Mojo0
Okay, opening a 324 MP image requires 969MB of RAM space. Ouch. I'd need that much FREE RAM to be able to open it without gay hard drive pagefiling.
..and the program I used to try and open the file has leaked ram everywhere..
- Crouwel0
dude, go to the DPREVIEW.COm site and go to the testpix from the most expensive digital camera's. Some go up to 14 million pixels and have great colors!!
- Mojo0
Hey thanks, last one looks great.
I've been trying to find image samples from the Hasselblad H2D-39. 39MP!
I've also been told that there is a 139MP digital back somewhere..
There must be a super ultra mega high res image floating around somewhere, just dying to be printed.
- Crouwel0
IT DOESN'T GET MUCH BIGGER THEN THESE, OVER 13 MB EACH: