To change the
resolution of scans:
1. Open Epson ScanSmart and select the Settings button
2. On the Scanner Settings tab,
click Scan Settings. You will and Epson Scan 2 window
3. Click on the Resolution
drop-down arrow, select dpi, and then click Save
https://epson.com/faq/SPT_B11B258201~faq-00006E1-es580w_rr600w?faq_cat=faq-8796127406156