How can I view (not download) iPhone pictures on a Mac screen? I have an iPhone 5 with various photos.
I have a Mac desktop running OS X Yosemite.

Is there a way to view a fullscreen slideshow of the photos on the Mac display?  I don't want to download the photos, just flip through them for display on the big screen.
Apple's mandated solution would be to wait for the photos to upload to your Photo Stream or iCloud Photo Library, then start a slideshow in iPhoto or Aperture.

Alternatively, you could make your Mac into an AirPlay receiver using a 3rd party app such as AirSquirrel's Reflector. This one is paid, but I'm not aware of any free equivalent.