Selected answers from the Dumb SEO Questions G+ community.
Subash Basnet: well i prefer to use name related to product rather focus on kw
Meir Swed: I choose keyword that also describe the product well, but I have few images of the same product just different angles so I thought if I should call to all the images in the same name or to diverse
Alan Bleiweiss: Naming and alternate attributes need to communicate what the image is. Using words not specific to that, is harmful to humans and SEO quality and trust.
Travis Bailey: If you want to rank for kittens, it`s best to sell kittens and not puppies.