Thank you for your comments.
So here is what I learned until now from various websites, plz correct me if I am wrong
1. HDR can be done using Magic lantern but motion blur is an issue with moving subjects
2. HDRx in Red Cameras is cool and I think it works better than ML but still has some motion blur issues
3. Tonemapping is another option but it takes a lot of effort and gives an halo effect around foreground (if not done properly) and also if we push it too much we run the risk of noise.
If anyone has knowledge working with HDRX in Red, how does it work for simple dialogue scenes? little moment but not exactly an action sequence?