[munce]

hello brothers,

can anyone tell me whether the biggest aperture is F1.2?

I also wanna to know the sequence, F 1.2, 1.4, (any 1.6?), then 1.8, then 2, then what (any 2.2, 2.4, etc.)?

So F 2.8 and F 4 is how much different?

thanks.

[h0001244]

The largest one I know is this one ! !

50 F0.7

http://www.visual-memory.co.uk/sk/ac/len/page1.htm

[munce]

Dear iso100,

so how come Canon has 50mm f/1.8 and another one f/1.2? 1.2 and 1.8 are not in your list above?

Buying a lens with f/2.8 and f/4 - will there be big difference in pic quality (of course money is a big difference)?