# Dome light - HDRI resolution **URL:** \ **Category:** General\ **Created:** [April 20, 2010, 11:56am UTC](https://forums.chaos.com/t/dome-light-hdri-resolution/23805 "2010-04-20T11:56:20Z")\ **Posts on this page:** 18\ **Page:** 1
**Author:** ![PIXELBOX\_SRO](https://avatars.discourse-cdn.com/v4/letter/p/97f17d/32.png) [@PIXELBOX\_SRO](https://forums.chaos.com/u/PIXELBOX_SRO)\ **Post date:** [April 20, 2010, 11:56am UTC](https://forums.chaos.com/t/dome-light-hdri-resolution/23805/1 "2010-04-20T11:56:20Z")
Hi all, just wondering why is the dome light resolution when placing HDRI limited to 2048px? does it affect the way HDRI is rendered in the background? thanks best regards ---
**Author:** ![vlado](https://avatars.discourse-cdn.com/v4/letter/v/779978/32.png) [@vlado](https://forums.chaos.com/u/vlado)\ **Post date:** [April 20, 2010, 11:58am UTC](https://forums.chaos.com/t/dome-light-hdri-resolution/23805/2 "2010-04-20T11:58:09Z")
It only affects the samples generated for direct illumination; the HDRI map should still appear with its original resolution when viewed directly. Best regards, Vlado ---
**Author:** ![PIXELBOX\_SRO](https://avatars.discourse-cdn.com/v4/letter/p/97f17d/32.png) [@PIXELBOX\_SRO](https://forums.chaos.com/u/PIXELBOX_SRO)\ **Post date:** [April 20, 2010, 12:43pm UTC](https://forums.chaos.com/t/dome-light-hdri-resolution/23805/3 "2010-04-20T12:43:06Z")
right…lets say i have a HDRI map 12000px wide with lots of light and dark places, quite contrasting…is 2048px resolution enough for precise GI cals in this case? does it mean the dome light only averages 6x6 pixels area? (12000/2048…approx 6px square) ---
**Author:** ![vlado](https://avatars.discourse-cdn.com/v4/letter/v/779978/32.png) [@vlado](https://forums.chaos.com/u/vlado)\ **Post date:** [April 20, 2010, 1:16pm UTC](https://forums.chaos.com/t/dome-light-hdri-resolution/23805/4 "2010-04-20T13:16:52Z")
It should be enough; keep in mind that you can always assign a higher value through MaxScript if necessary. Best regards, Vlado ---
**Author:** ![Fekta.studio](https://dub1.discourse-cdn.com/chaosprd/user_avatar/forums.chaos.com/fekta.studio/32/2921_2.png) [@Fekta.studio](https://forums.chaos.com/u/Fekta.studio)\ **Post date:** [April 20, 2010, 1:44pm UTC](https://forums.chaos.com/t/dome-light-hdri-resolution/23805/5 "2010-04-20T13:44:55Z")
Vlado is there a way to show us a little example of that command.. ? I’m lost with maxscript and we use very large HDRI-s, will be good to pump the resolution more than 2048.. ---
**Author:** ![instinct](https://dub1.discourse-cdn.com/chaosprd/user_avatar/forums.chaos.com/instinct/32/74489_2.png) [@instinct](https://forums.chaos.com/u/instinct)\ **Post date:** [April 20, 2010, 2:40pm UTC](https://forums.chaos.com/t/dome-light-hdri-resolution/23805/6 "2010-04-20T14:40:18Z")
`$VRayLight01.texmap_resolution=10000` This would set VRayLight01’s resolution to 10000. Replace VRayLight01 with the name of the Light, 10000 with the desired resolution and run it in the listener Regards, Thorsten ---
**Author:** ![pskdude](https://dub1.discourse-cdn.com/chaosprd/user_avatar/forums.chaos.com/pskdude/32/46481_2.png) [@pskdude](https://forums.chaos.com/u/pskdude)\ **Post date:** [April 20, 2010, 2:46pm UTC](https://forums.chaos.com/t/dome-light-hdri-resolution/23805/7 "2010-04-20T14:46:31Z")
Hmm.. Never thought of this either and i would be lost with maxscript as well lol. Also maybe it would be a good idea to do some test images to see what kind of resolution etc is most efficient / rendering time to quality. ---
**Author:** ![peterguthrie](https://dub1.discourse-cdn.com/chaosprd/user_avatar/forums.chaos.com/peterguthrie/32/57456_2.png) [@peterguthrie](https://forums.chaos.com/u/peterguthrie)\ **Post date:** [April 20, 2010, 3:20pm UTC](https://forums.chaos.com/t/dome-light-hdri-resolution/23805/8 "2010-04-20T15:20:51Z")
I’d be interested in knowing if it really made any visible difference, do some tests, someone! ---
**Author:** ![pskdude](https://dub1.discourse-cdn.com/chaosprd/user_avatar/forums.chaos.com/pskdude/32/46481_2.png) [@pskdude](https://forums.chaos.com/u/pskdude)\ **Post date:** [April 20, 2010, 3:42pm UTC](https://forums.chaos.com/t/dome-light-hdri-resolution/23805/9 "2010-04-20T15:42:38Z")
Someone ! Anyone ! lol. ---
**Author:** ![peterguthrie](https://dub1.discourse-cdn.com/chaosprd/user_avatar/forums.chaos.com/peterguthrie/32/57456_2.png) [@peterguthrie](https://forums.chaos.com/u/peterguthrie)\ **Post date:** [April 20, 2010, 3:48pm UTC](https://forums.chaos.com/t/dome-light-hdri-resolution/23805/10 "2010-04-20T15:48:30Z")
anyone but me, I don’t have time, have to go to the pub to watch football soon! ---
**Author:** ![Fekta.studio](https://dub1.discourse-cdn.com/chaosprd/user_avatar/forums.chaos.com/fekta.studio/32/2921_2.png) [@Fekta.studio](https://forums.chaos.com/u/Fekta.studio)\ **Post date:** [April 20, 2010, 6:47pm UTC](https://forums.chaos.com/t/dome-light-hdri-resolution/23805/11 "2010-04-20T18:47:27Z")
thank you instinct.. I’ll do some test as soon as i can. ---
**Author:** ![PIXELBOX\_SRO](https://avatars.discourse-cdn.com/v4/letter/p/97f17d/32.png) [@PIXELBOX\_SRO](https://forums.chaos.com/u/PIXELBOX_SRO)\ **Post date:** [April 20, 2010, 7:07pm UTC](https://forums.chaos.com/t/dome-light-hdri-resolution/23805/12 "2010-04-20T19:07:39Z")
got already render running overnight…its an exterior WIP with one of the Peters HDRIs…will try the script tomorrow on the same scene to see whether there is any visible difference ---
**Author:** ![pskdude](https://dub1.discourse-cdn.com/chaosprd/user_avatar/forums.chaos.com/pskdude/32/46481_2.png) [@pskdude](https://forums.chaos.com/u/pskdude)\ **Post date:** [April 20, 2010, 8:24pm UTC](https://forums.chaos.com/t/dome-light-hdri-resolution/23805/13 "2010-04-20T20:24:51Z")
Sounds great Pixel Thanks so much!!! ---
**Author:** ![voltron7](https://dub1.discourse-cdn.com/chaosprd/user_avatar/forums.chaos.com/voltron7/32/39008_2.png) [@voltron7](https://forums.chaos.com/u/voltron7)\ **Post date:** [April 21, 2010, 5:24am UTC](https://forums.chaos.com/t/dome-light-hdri-resolution/23805/14 "2010-04-21T05:24:15Z")
Here are a few quick tests on a WIP [![](https://europe1.discourse-cdn.com/chaosprd/original/3X/a/6/a6e2fc6cb0b5776d4081abbc1e85d232cb57d78b.jpeg)](http://www.maine-ais.com/recent/RVR_H_Rev9-2048res.png) [![](https://europe1.discourse-cdn.com/chaosprd/original/3X/3/e/3e6c2ca9f62ff7c312213bbd0a4e961ff7158f7b.jpeg)](http://www.maine-ais.com/recent/RVR_H_Rev9-7054res.png) [![](https://europe1.discourse-cdn.com/chaosprd/original/3X/0/b/0bc8b4b25c1259e7ec2d0c7b27e28c2751a9c246.jpeg)](http://www.maine-ais.com/recent/RVR_H_Rev9-10000res.png) This is a nice HDRI from Peter Guthrie’s collection. Differences are not noticeable, to me…maybe in a more heavy scene??? ---
**Author:** ![3DMK](https://dub1.discourse-cdn.com/chaosprd/user_avatar/forums.chaos.com/3dmk/32/388_2.png) [@3DMK](https://forums.chaos.com/u/3DMK)\ **Post date:** [April 21, 2010, 5:42am UTC](https://forums.chaos.com/t/dome-light-hdri-resolution/23805/15 "2010-04-21T05:42:59Z")
I think an interior would be a better test…something with multiple/detailed light sources. Not sure it is worth it for exterior clear-day renders…I can’t see much difference…??? ---
**Author:** ![PIXELBOX\_SRO](https://avatars.discourse-cdn.com/v4/letter/p/97f17d/32.png) [@PIXELBOX\_SRO](https://forums.chaos.com/u/PIXELBOX_SRO)\ **Post date:** [April 21, 2010, 7:06am UTC](https://forums.chaos.com/t/dome-light-hdri-resolution/23805/16 "2010-04-21T07:06:32Z")
hmmm…i think its more aplicable to the hdris with a lot of sharp details…clear day wont do it it might be visible on some studio HDRIs…i ve got a few, quite large ones…will try it off to doctors today with terrible headaches…will get to it asap ---
**Author:** ![PIXELBOX\_SRO](https://avatars.discourse-cdn.com/v4/letter/p/97f17d/32.png) [@PIXELBOX\_SRO](https://forums.chaos.com/u/PIXELBOX_SRO)\ **Post date:** [April 21, 2010, 7:07am UTC](https://forums.chaos.com/t/dome-light-hdri-resolution/23805/17 "2010-04-21T07:07:24Z")
although if you look at the images once again, the tint changes a bit! ---
**Author:** ![vlado](https://avatars.discourse-cdn.com/v4/letter/v/779978/32.png) [@vlado](https://forums.chaos.com/u/vlado)\ **Post date:** [April 21, 2010, 7:44am UTC](https://forums.chaos.com/t/dome-light-hdri-resolution/23805/18 "2010-04-21T07:44:03Z")
> [@vlado](#): > > although if you look at the images once again, the tint changes a bit! No, it doesn’t; if you flip through the images you will see that the lighting is exactly the same; the difference is just in some of the reflections. Best regards, Vlado