just got to use this lumi last night, great conditions for a thermal, low humidity and dew point, i’m coming from using a seeker 19-384 and i love it, i was able to save money to move up to a 35-640 , but i needed help finding the best one in my budget, it was between 2 thermals, one had lrf and one didn’t, didn’t need the lrf so the only real option was this lumi, i asked if this was a good 640 (they are not all created equal) and jason and hans said this lumi put out a really nice crisp picture, so i pulled the trigger on this lumi,, so i spent a few hours looking through it and was incredibly sharp crisp and more than i thought it would be, looking at videos taken with it was really good but like most thermals it’s a much better view looking through the thermal, i’m super happy with this lumi, more than i could have hoped for, thanks to outdoor legacy and the awesome staff and answering all my questions helped me get this incredible thermal, ken.