The breadmakersbread makers sequence (shot in a dark alley in Urumqi in far Northwestern China) was shot in gloomy darkness. I had not expected to need a flash as I wandered the streets - but without one here iI would have needed exposures of many seconds and some photos would not have worked at all. Full studio lighting, two lovely assistants to hold reflectors, snooted studio flashes etc would perhaps have given a better photographic result - but probably not - the popup flash probably gives a better atmosphere than anything "superior".
Uighur breadmakerbread maker, Urumqi
Light level is consistent with Sony 5D popup flash
Increased evenness of light would have detracted from result.
Much higher resolution version here