class Magick::Image

def get_exif_by_entry(*entry)

arrays.
return all entries and values. The return value is an array of [name,value]
return the values associated with the entries. If no entries specified,
Retrieve EXIF data by entry or all. If one or more entry names specified, 
def get_exif_by_entry(*entry)
  ary = []
  if entry.empty?
    exif_data = self['EXIF:*']
    exif_data&.split("\n")&.each { |exif| ary.push(exif.split('=')) }
  else
    get_exif_by_entry # ensure properties is populated with exif data
    entry.each do |name|
      rval = self["EXIF:#{name}"]
      ary.push([name, rval])
    end
  end
  ary
end