I'm still using the Sony Nex-5N that I purchased in the Summer of 2012 and am continuously pleased with its results. It's small footprint and ability to use literally hundreds of different lenses through adapters presents many options to explore. For the Orchid Show, I mainly used a Minolta MD Rokkor 50mm f1.4 from the 1980's on the captures. Along with a Raynox 150 diopter attached, I could get macro-like results and exploit the shallow depth of field from this lens even more so.
Below (click on each for a larger image) are a few examples I took from the show. A more complete offering can be found on my site here. If you have any questions or comments, send them on over to me. I hope you can experience some enjoyment or appreciation for nature from these.