Ok I've hit on something that doesn't make sense to me and maybe you guys can come up with the answer. I look at 24fps material every day at work. As a consequence of this my monitor is set to refresh at 72Hz ( res is 1280x1024) . Now when I view material with pans or other horizontal movement in it deopending on how it was shot there is some strobing but not anything greater than you would see if the film itself is projected ( something borne out by viewing the material when it goes back to film) However when I watch a 525/60 dvd mastered from 24fps material at home on my PC where it is effectively inverse telecined back to 24fps the strobing on pans is very obvious. ( this is at 1024x768 and again at 72Hz refresh) If I up the refresh rate to 120Hz the strobing becomes more like what I'd expect on film material ie visible but not particularly ugly. And additionally more like what I'd expect at work where I use 72Hz. disc used for reference was hollow man region1 ( the bit where Kevin Bacon drives into the car park for the first time) Questions: Why should I get a different result using the higher refresh of 120Hz compared with 72Hz at home. Why should I get similar results to what I see at home using 120Hz to what I get at work at only 72Hz? Things to bear in mind at work I have a real 24fps source whereas at home I have dvd inverse telecined to 24fps. This means that the dvd material is actually running at 23.98fps ??? If so why does 120Hz not show a similar result if its as a result of speed mismatch? ( x5 repeat averages out the mismatch better than x3 repeat??) My other thought was that the software player ( windvd) was not performing an adequate inverse telecine and I was still seeing a 30fps image with exacerbated deinterlaced 3:2 pulldown and this was visibly improved by going to 120Hz which is a mutliple of 30 as well as 24. However the frame counter is visibly running at 24fps on playback so its not this. Reason I'm asking is I doubt there are projectors out there that operate at 120Hz at reasonable resolutions ( certainly not any my missus would not notice hanging from the ceiling). So does selecting the magic refresh rate I see mentioned in other threads (71.94 something I think) solve the strobing? And how hard is it to get a projector to accept this non-standard refresh rate?