Which lens is better for Street Photography, the EF 40mm STM or EF 50mm 1.8 II?

[AvTvM]

What's better than the 50 or 40? On my SL1, the EF-S 24 2.8 (with the forty in my pocket)

Yes! These pancakes make a very decent combo on an SL1/100D.

I'd love to have the same for my new 5d iii. But ungortunately, the 24 pancake is only EF-S.

The 40 IS the same as the 24 on a crop, well close enough. I love the 40 on my Mk3

Yes. I was not clear enough: i would like to have an EF 24/2.8 pancake ... as small, cheap and good as the ef 40/2.8. And a EF 75/2.4 pancake in addition.

 

[Random Orbits]

Yes. I was not clear enough: i would like to have an EF 24/2.8 pancake ... as small, cheap and good as the ef 40/2.8. And a EF 75/2.4 pancake in addition.

Just get the 24 f/2.8 IS. It's a gem of a lens, and it's fairly small.