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12/08/2003 01:59:28 AM · #1 |
I have a 300 DPI image.
I need to make it larger for printing, so I resize it, without resampling.
I now have a 220 DPI image, which is in the decent printable range.
Sooooooooo
Am I going to get a better result if I print as is at 220 DPI, or resample up to 300 DPI and then print.
Anyone know for certain?
(Am speaking in general terms here, not just this specific photo)
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12/08/2003 02:02:56 AM · #2 |
| My understanding, according to Drew, is that as long as it is above 150 dpi at the final print size you are better off leaving it alone. |
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12/08/2003 03:12:33 AM · #3 |
Spank you hairy crutch, that is good enough for me :)
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12/08/2003 04:20:26 AM · #4 |
Originally posted by Natator:
I have a 300 DPI image.
I need to make it larger for printing, so I resize it, without resampling.
I now have a 220 DPI image, which is in the decent printable range. |
As far the Fuji Frontier (dpcprint's device) is concerned you didn't do a thing to your file. The Frontier prints at 300ppi and will resample your image if necessary to do so. I suppose there is some debate about whether it is better for you to do the resampling or if it's better to have the Frontier do it for you; in my opinion, it does as good a job as (bicubic) stair interpolation.
You can only submit one file per "logical print", so images available at multiple print sizes are bound to be resampled by the Frontier. If you're concerned about the Frontier's upsample quality, resample your image to 300dpi at the largest print size (or maybe the most likely print size to be sold). It might be better for you to make the decisions rather than the device (or its operator).
Personally, I would prefer if we could upload several files per print size (premium membership?), so we have more control over the output.
Originally posted by Natator:
Am I going to get a better result if I print as is at 220 DPI, or resample up to 300 DPI and then print. |
I suppose the above answers your question, but just to be clear, I'll repeat. Your image file contains pixels only. You (or your customer) tells the Frontier what print size you (they) want. The Frontier generates (as needed) an image file which is 300dpi, so this may involve resampling (up or down). In your example, you're either resampling yourself or letting the Frontier do it. |
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12/08/2003 05:12:33 AM · #5 |
This is for printing myself, nothing to do with DPC Prints in this case.
Useful info there on how DPC Prints does it though dwoolridge, thanks :)
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12/08/2003 09:35:20 AM · #6 |
Then it depends on the native resolution of the output device. If you don't send it to the device at that native resolution, it will get resampled again by the printer driver. It is debateable if you want to do that resampling first with more control, or let the printer driver do it for you. (more opportunity to screw up == more control, but more choice)
The resolution varies for different output devices.
E.g., The Epson 9600 has a native resolution of 360 dpi - recommendation there is to upres your image as they look better done that way than printing and letting the driver resize
or a LightJet 430 requires files be at exactly either 200dpi or 300dpi |
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