I have just got hold of a 2DF8225IH, which must be the ‘cheap’/old version of the Darkfighter X range, and it is certainly impressive in low light, so yeah I expect this 4mp version is lovely.
I will post a review when I have used it more and get the time, but the summary so far is...great in low light, not so great under IR only, noticeable processing lag when controlling it and moving it around...it is clearly doing some heavy processing to the image in real time. I have also just got hold of a standard Darkfighter so will be interesting to compare.
They are certainly big and heavy power hungry beasts! That 4mp version is 12kg...and even my one needs a 90w POE injector (which I didn’t realise even existed) to operate reliably...it states 60 in the data sheet but it is not enough.