Last night we went on a discussion about resolution, what is dpi, lpi , spi, ppi. There were many things i got forgotten in terms and concept, but you can read more about it here. I recommend you to save this document on your computer as a reminder.
Thank you for posting this article. I have read several documents on this subject already, but this one really gets to the heart of the subject. I also appreciate that there is a lot of practical knowledge here.
Here is a link that I've used in the past to determine quality/size/etc. The idea here is not so much the detailed explanation of, but rather straight-forward answers so sizing and PPI. Hope this helps as well!
Link here:
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