Many thanks for the positive replies. Few words about the set-up. Recently I played a lot with fiber optic filaments and used them to achive fancy lighting effects. I have a flickr page and a not so frequently updated blog on this topic:
http://www.flickr.com/photos/fiberstrobe/
http://www.fiberstrobe.blogspot.com/
My two latest projects were to create fiber optic based ringflash adapters for my nex and a100 cameras:
http://www.flickr.com/photos/fiberstrob ... 491664288/
http://www.flickr.com/photos/fiberstrob ... 934756022/
While using these adapters came the idea to channel the light not in a standard ringflash way but more around the subject (from the sides) to create a kind of rim light. Ringflash also creates an interesting effect, but the lack of shadows makes most of the pictures dull.
I don't have a picture of the set-up yet, but I will post it soon.
The background was the lid of a praline box. Black and a bit reflective. Not the best option but that's what I found in a hurry. There was no special background in case of the rose. It was in a relatively dark room standing in a vase on the floor.
I used a single flash, a yongnuo YN460-II, which works somehow together with the nex in wireless mode. I covered the flash of the nex to prevent light coming from the camera.
Cheers
Marcell