This was shot using a Canon Powershot A3100 IS on it’s low light 2 megapixel setting. with the lens literally inserted into the top of the tulip. I think that the camera, on this setting has a different native ISO than normal which allows for very low noise pictures at what seem to be very high ISO’s. The reason for this is highly technical and has a lot to do with a fewer pixels per unit of sensor area. When I am feeling brave I’ll attempt a post explaining this in full.
The petals of the tulip acted as a softbox diffusing the available light. Most of the light came through the petals and very little from the top of the flower.