Hui Song, color me a bit envious of your fall colors! Living in Hawaii it is something that I truly miss.
My favorite of the bunch is #2 as I find the background and composition very pleasing.
Hi Hui,
What settings did you use? No 1-4 seem to be very saturated. Sometimes that is the result I get when shooting in Matrix Metering.
An overcast sky renders very good light for photography.
Since it is a overcast day, I tried to find the a back light condition or extremely dark background. I used the spot meter on the leaves. Also, I shoot 3~7 brackets. The original fill o from camera are still too plan for me. I choose one or two exposure as starting point in LR. I move the "shadows" value lower to darken the background. For the saturation, in stead of making it higher for the whole picture, I adjust it individually for each warm color: orange, yellow, green higher. Maybe they are over saturated.
I did try to merge HDR file for these leaves to gain vivid color. But the leaves moved too much, most of the HDR leaves picture are unusable. The #2 is a HDR image.
Shane, John, Thanks for your comments.