Trying out some different lighting for an orchid image, I set up a small infinity curve using a Colorama Colorgloss White background which was lit from behind by a single Elinchrom RX4 and softbox.
I used a couple of small white polystyrene discs to bounce a little light back onto the orchid, as per the setup below.
The aim was to get good lighting on the orchid, with the background completely white. Even thoughI was shooting at f8, the shallow depth of field with the macro lens required me to stack the images.
The final images were stacks of 10 – 12 images each with the focus point slightly moved. The images were align using Photoshop and then blended into a stack.
For the second image I got in closer which again resulted in a minimal depth of feild.