The differences are not limited only to the specs, they are modeled for different styles and different purposes in other contexts. Read the blog to know more about it. Sony FX3: Great for portable shooting that requires versatile angles while being effective in challenging light situations. Sony FX6: Best suited for more sequential narrative but mid-size projects where a great deal of dominance would be required. Sony FX9: It is the best option for higher productions due to its great image quality and wider specifications.