u use bounce card or ceiling?

rubber band and strap it at the bottom of the flash so that it is directly blocking the flash and bounces it off to the ceiling, some diffused light will still go through but it will do virtually nothing.

I was using the 50mm, probably around f/2.8 or f/4...you'd need iso400-800

My library card and Chubb card (security card) is in all white. You can just use a folded piece of white paper. Don't continuously shoot the flash whever it recharges, you risk burning the flash and card (i did this and a small burnt mark was left on the card) If you let the flash cools down properly, it will do no harm.

edit: nvm, went out and took a sample:



taken at iso 800, f/4.5, +5.0 EV, at very low light. That's the 18-70mm btw.

brighter lens help alot, and post processing might be needed, so...take raw and mess around...you'd also get different result with different cards...as in how much light could go though and how much is bounced. Of course, nothing beats a proper external flash....the postman ought to bring me my sb600 already!