Originally Posted by
FootLoose
Izzie, I think if you are shooting a still subject such as this with a tripod, all you need to worry about is the aperture. I would set the camera to base ISO and aperture priority, set my aperture to give me an appropriate depth of field and let the camera adjust the shutter speed to suit.
I only shoot in natural light, but I suspect your colour problems are being caused by using an overhead light and an LED. You have two different light temperatures to confuse the camera's metering. Why not try taking one shot of a gray card to establish a reference for processing, and then take your shot of the flower. Then you should be able to adjust your white balance in PP to get the flower's colour right.