I am totally new to Night Vision, at the start of lockdown I bought the F144 & Wicked lights A51ir. At first I found it a bit of an enigma, either too white or too vague. I discovered that the IR doesn't need to be set on the 800 nm? setting, it gives off a glow, & too much white out, alright for long range identification, set on 940 I can id a fox easily at 200 yards. You need to defocus the lamp rather than have the square image, this gets rid of the striping effect, & greatly reduces white out. Have the lamp set as high as possible is also beneficial. The W Light has a very good dimmer, the biggest problem I had was a fox looking straight at me, the reflexion of its eyes made them look like dinner plates, not easy to see the body. What I did in the end was to put a brown cardboard box on a fence post with a 1/2 inch pice of reflective tape in the middle, about 120 yards out. Using the red led & take the Pulsar off, focus your scope till you reduce the size of reflexion & see the card box as well, try it with the Pulsar on & focus the unit the play with the dimmer, brightness & contrast. The Pulsar holds its settings so all you have to do in future is focus & dimmer. Over the weeks I have shot 12 foxes on my small farm, all have been extremely difficult old lamp shy vixens & dogs, I feel like I have finally gotten the hang a this, I find 8x mag is a bit too high, 5 or 6 x is about perfect, good for 160-200 yards, but the truth is most foxes I shoot are 30 - 150 yards. Shot 4 foxes since friday, before the moon gets up, I'm loving it! Hope that helps.