Red Tip Photinia
Thank you for your question.
The problem is very common on red-tip Photinia . This is called Entomosporium leaf spot.
This VCE publication by Mary Ann Hansen, Extension Pathologist, describes the problem along with cultural and chemical recommendations: https://www.pubs.ext.vt.edu/content/dam/pubs_ext_vt_edu/450/450-609/450-609_pdf.pdf
Fungicides would need to be applied preventative through the growing season.