Although I agreed with your view and delpiero's, check the following link:
http://www.cic.gc.ca/english/resources/tools/perm/express/intake-complete.asp
On the digital photos tab, under document requirements, there's a link to " IRCC’s permanent resident card photo specifications" abc it clearly states that the digital photos need to comply with the requirements listed in the pdf.
Let's say for the sake of argument, I don't need such details for the digital photos for eapr, we do however need to bring photos for the landing procedure, therefore taken in our home country. What do I do then if No studio wants to write down the information requested by cic?