Originally Posted by
DanK
Sorry, I shouldn't have used "dots", since it has several meanings. What I meant is using two nozzles for one pixel. If you go back to the beginning of this, what I found puzzling is that everyone says that the "native" resolution of Canon printers is 300 dpi. However, I found documentation that the nozzle pitch is 600 dpi. (For brevity, I won't keep inserting the comparable numbers for Epson, but the same issue applies, however.)
Manfred responded:
So, my point is that if one is feeding a 300 ppi file into a printer that has a nozzle pitch of 600 dpi, it can't produce 600 different dots per inch. My hypothesis is that if there is anything to be gained by setting the firmware to 600 dpi (720 in the Epson world), it would only be by outputting 600 ppi files from the software.
Therefore, if I get around to testing this, I'll run only three prints:
1. Output at the standard 300, firmware set to 300. (I think that is "high", but I have to check this.)
2. Output at the standard 300, firmware set to 600. (I think this is "highest", but again, I have to check.) If my understanding of "highest" is correct, this is what I have been doing since I bought the printer.)
3. Output at 600, firmware set to 600.
My hypothesis is that if there is a difference in resolution, it will only be #3, and if there is a difference in quality between #1 and #2, it won't be resolution per se.