I need some advice on Flash. Currently I am using D90 kit + 50mm. It is hard for me to get a good indoor photos because sometimes the light condition is not ideal. Using of the pop-up flash with diffuser sometimes help, but then it is too harsh... Sometimes I take a step back to make the pop-up flash become softer, but sometimes it is not possible because of my lens limitation.
So here I am, asking for advice from you all. I did my research from google and this forum, but can not really get any comparison between 'original' flash, 'exp' 3rd party flash, and 'cheap' 3rd party flash. Anybody can help me to suggest some reading about flash, flash photography, or sharing exp are very welcomed.
Thinking to get between 2nd hand Nikon Flash, or new 3rd party flash (Nissin, Tumax, Sunblizt??). Hope to get some opinion about these because I am really new about flah and have no exp in using flash.
Thank you. Cheers...