It is. It is said that this video shows what we never we able to see, radiation. Look at 3:08. Those white points are radiation marks, something that we never were able to see.

Doing some research about Pripyat, there is a part which shows the same radiation marks at 1:03 and 1:04. Then, at 4:34 those points appear again.

Nobody is able to know how many Roentgens were in Pripyat. The report of the CCCP said that there was 1R, but others says there were 7R. Taking both cases, it would mean that the exposed people in the helicopters would have taken so many Roentgen, the numbers are up to 100R.

Now, I would like to know if someone knows if this is true. I mean, is that radiation?