14mm f/2.5 and 20mm f/1.7 lenses
 

Having heard these two lenses are good, I have ordered both. Although the amount of low light filming I do is small, can anyone with both possibly tell me will the low light ability of the 20mm be noticeable (as it's faster) over the 14mm, which may well be better for me as its wider? I have a Canon WD-H43 wide angle adapter, but stepping up to the 46mm thread of the 14mm Panasonic lens may not work, as I know coming down in size is the way to go with adapters.