Yah, it is too dark inside of the temple. It is the first time I shoot the statues. I have not yet got an idea how to manage the light in too dark. I set f4.5 and shutter speed 0.025 s (1/40), but was not enough. I believe that I can not use the tripod there. That is the reason what I used a built-in flash to those shots. It seems unnatural!
I would very appreciate if you (everyone is welcome) could give me the suggestion for this. It will help me as I am planning to travel some more pagoda/temple for collecting the statue pictures. Thanks in advance.