Kostas asked, "Will the grey card take into account the translucence?"
If you're shooting a backlit, translucent flower, a grey card reading is useless, because you'll be measuring only the reflected light and not the transmitted light. To get an accurate reading for the flower, you would do best to spotmeter the flower, then base your camera setting on that reading and the flower color. For special metering situations like this, you have to learn to look at colors in terms of their reflectivity and transmission rate. For example, a medium red or medium green is similar in reflectivity to a grey card, so a direct meter reading on such a color will work. A white flower is two to three stops more reflective than grey. A blue or purple flower one to two stops less reflective. Of course a translucent object is rendered in respect to both reflected and transmitted light, so the normal relationship of colors and reflectivity applies only in part. But I've found that applying the variations to the meter reading as described above will get you very cl! ose in such situations. However, bracketing a stop in each direction should be considered mandatory for this type of situation. Paul
