but going sub f/1 will double the amount of light from f/1.4, correct? making an image twice as bright with no increase in noise? it seems like a significant difference.
I will look into the 7Artisans, thank you. but with either lens it requires an adapter, correct? aside from losing the features of the lens like stabilization and auto-focus, is there a negative effect to using an adapter with a lens that is not native?