Hi Christina,
Shooting a backlit flower is not all that easy. I will share what I have learned form my own experience.
To capture a backlit flower you will have to be patient and wait for the sun to be in the right position. Usually you will get the best backlighting either early morning or late afternoon. Shooting during the “golden hour” you need to use manual WB. You want the colour of your flower to be as natural as possible. Try around 4300-4800 Kelvin. Do not try doing it handheld, I tried and failed. A tr
ipod is a must, simply because you will be shooting in low light conditions.
I have used spot focus and spot metering as I found those settings to work best for me. Concentrate on a specific area you would like to be in focus. Using a smaller aperture for greater DOF is a good idea, see why the tripod – smaller aperture lower shutter speed! Try keeping ISO as low as possible because you will be shooting in a fairly high dynamic range environment. The higher the ISO when the dynamic range is wide, the more noise will be generated in the darker areas.
The flower you wish to have backlit will have to be a flower with fairly thin petals, you want the light to shine trough the petals. It is very difficult to shoot a flower that is still closed as you will find the dynamic range on the flower to be to wide for your camera’s DR (I think a D600 will do a much beter job).
Take time in observing opportunities where a flower is about to open fully with the sun shining from it’s back. Plan ahead and make sure you are there when the flower is ready and the sun is in the right position. Be careful in avoiding shooting to straight into the sun as this wil result in lots of lens flare. Keep the sun away from the front of the lens by either shooting from a shady area or by using your hand or other object to keep the sun away.
I am posting this image as a reference to you. It is probably not the best shot of a backlit flower but it was my first attempt.
Good luck, It is a challenge that is worth the effort.
By the way: the result you got with that shot is what you get when using matrix metering with the incorrect WB setting.
