Sigma 16mm F1.4 lens

[haiti954]

How much better is the Sigma 16mm F1.4 lens compared to the 14-42mm kit lens. I'm talking about in terms of quality sharpness because the kit lens sucks on Panasonic Lumix G7

 

[13thmonkey]

what is the aperture of the 14-42 kit lens?

 

[rgd1101]

MERGED QUESTION
Question from haiti954 : "Panasonic Lumix g7"

Hey folks, i want to get better quality videos with Panasonic G7 but the videos i saw on YouTube are awesome sharp with Sony A6500. Will the Sigma 16mm or 30mm F1.4 lens make a big difference in quality compared to the 14-42mm kit lens?