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04/02/2006 07:08:37 AM · #1 |
This is an embarrassing question but I have to ask it anywayâ¦
How many DPI is best for image reuse?
iStock says that the optimal image is 5 x 7 x 300dpi but at the same time they say that bigger is better. When I convert my older images that were not shot in RAW to 300 DPI and look at them âprint sizeâ in CS2, they are actually much smaller than they were before at 72. But is the quality better?
But if an image is originally 72 DPI or 240DPI, is it still an advantage to convert it to 300? Do we gain anything?
When I have my camera set to RAW the resolution is 240 DPI. When I set it to âlargeâ I get 72 DPI when I open the images in photoshop.
In CS2, âNew document preset resolutionsâ is set to:
Print resolution: 300dpi
Screen resolution 72 dpi
Finally: My RAW converters let me select any DPI for processing (workflow options in CS2), but how many DPI is the image actually as recorded by the image sensor?
So whatâs the proper settings? Whatâs best for stock photo sites?
Iâm sure Iâm missing the obviousâ¦
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04/02/2006 07:28:30 AM · #2 |
optimal printing resolution depend on your printer.. but try not to go below 240dpi..
if your max printer output is 1440dpi then your optimal dpi is as follow..
1440dpi the best
720dpi second best
360dpi great for photos
180dpi not for photopaper
in most cases you will not see any difference in quality when you get above 300dpi
that is if you print the same image in 1440dpi and 300dpi it will show the same quality, only the size will increase with lower dpi.
it's best to divide printer resolutions by half when deciding on resolution, for the printer to position it's head between points can be hard and quality suffers.
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04/02/2006 07:59:04 AM · #3 |
Thanks Dan.
I also just finsihed reading this article at Luminous Landscape and I now have a much better understanding. It's all pretty logical really. |
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