Nope...
and not all RAW photos are the same, the exact format varies between camera manufacturers so you often have to use the software that came with the particular camera to view raw images (or install the correct codec if one is available)
I use Faststone (free download) reads all raw files (I am Nikon) it is great for editing and is easy to use. Does batch conversions and slideshows too. another great feature is the adility to view and select thumbnails while projecting full size.
Call me pernickety. Is Photos a plural and does not need an apostrophe.....or is there an apostrophe because photo's is shortened photographs?......ducks down behind sofa and waits for backlash.