I would think this is a matter of film choice over format. A 24" x 36" print was possible from a 135 negative with little grain using the old Kodak Technical Pan rated at ASA 50, hand-held shots where possible on a bright day. Providing there's adequate light I imagine Ilford PAN F PLUS or or FP4 would allow larger prints without noticeable grain, if that's the look your after.
I don't know about color film though.
The best format for streetphotography is the format one feels most comfortable with be it 35, 6x6 or 8x10in. I've seen some amazing streephotography from the 19th century done with 5x7in cameras. The limiting factor in every photographic endeavor is the photographer not the filmsize.
And the work of both refutes the 'no grain is imperative' mantra that continues to plague 35mm shooters. Why does it matter? Look at the 4x5 and bigger world; just how many beached dories can one stand to look at? It's content that matters, and grain is content as much as is its pattern on the film base.
Originally Posted by vpwphoto
That's the problem I have with photography compared to all other art media:
Rules, rules, rules.... sheesh!
I've always thought photography was delightfully free of rules, mostly because of its past (to the cognoscenti) status as Art's bastard child.:)
Originally Posted by VaryaV