All pictures are taken as follow:
- EOS 40D + 24-105 L IS USM @ 105mm | ISO 100 | f/6.3 | 1/125s | mode M
white balance on "flash", jpeg directly out of the camera
auto fash expo (E-TTL)
subject at about 50cm from background and 1.5m from camera
built-in lash

flash cobra direct : sigma 530 DG super

flash cobra on ceiling

flash cobra + sto-fen omnibounce

flash cobra + Flash Bounce Reflector

as a reference: no flash | ISO 100 | f/6.3 | 1 sec | Av

