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Thread: anybody knows how to remove the white spots?

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    anybody knows how to remove the white spots?

    anybody knows how to remove the white spots on my render?
    Attached Thumbnails Attached Thumbnails anybody knows how to remove the white spots?-music-room-2.jpg  
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    Quote Originally Posted by wheen9 View Post
    anybody knows how to remove the white spots on my render?
    What quality setting are you rendering at (e.g. medium or high or ...)? My guess would be Medium ... try High or Best (yes, those will take longer to render)

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    It happens the most with very reflective materials, and incorrect light settings can exacerbate the condition. You do have daylight it appears so that might not be a fix for you, but I've seen it reduce when an interior space is rendered as interior, artificial only vs. interior, sun & artificial. You can try tweaking the material settings so the cymbals and picture frames are less reflective.
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    It looks like you've got a heavy bump as well, particularly on the cymbals. That will make the problem worse.

    Ultimately it needs to render longer so if you're using Render (as opposed to Ray Trace) you'll need to keep upping your settings until they either go away, you max out, or you can't handle the wait... my bet is you'll reach number 3 first.

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    thanks to all your reply.. first i rendered it using low settings @ 300dpi. i guess the workaround would be to tweak the reflective materials and the bump mainly because i dont have the patience to wait for a 4 hour render. also, what is the ideal dimension or pixel when rendering in high, best and medium? coz i happen to have an image with 16"x14" with an uncompressed file size of 33mb. no wonder its taking too long. myb, limiting my camera view would reduce the render timeo? and if i use interior: artificial only on my light source does that mean the everything outside my window will be black?

    by the way, i already made some post production on that image specially in the ceiling.
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    Forum Addict tzframpton's Avatar
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    There really isn't a workaround. The problem is not enough photons are being used to calculate the light on that particular material. So either bump up the quality considerably so the rendering engine can calculate everything properly, or use a different material that doesn't require the amount of photon emission to accurately represent the light.

    If it's time you're worried about, understand that most designers who produce realistic renders usually create quick draft renders, then when they're satisfied when everything they produce a high quality, high-res render for the final production image, which then usually goes through a post-processing stage in Photoshop.

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    I think completely reworking the materials that are causing the issue would be the cure. I shy away from ANY of Revit's metallic finished materials and I just make standard materials, that have the right color, but are set to high reflectivity. So basically like taking the standard paint material and turning it almost all the way up. "Silver Paint w/ Flecks" is one of my favorites that I can get to look like stainless steel, without the white dots.

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    Forum Addict tzframpton's Avatar
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    Quote Originally Posted by rbcameron1 View Post
    I think completely reworking the materials that are causing the issue would be the cure. I shy away from ANY of Revit's metallic finished materials and I just make standard materials, that have the right color, but are set to high reflectivity. So basically like taking the standard paint material and turning it almost all the way up. "Silver Paint w/ Flecks" is one of my favorites that I can get to look like stainless steel, without the white dots.
    Although I'll agree that adjusting materials can be necessary, I'll disagree that this is the problem. First off, the stock materials from Autodesk are pretty well done. So much in fact that most of them require no adjustments of the properties whatsoever. In my personal guitar project, I used 100% stock library materials with no adjustments at all and the output is just fine: 3D Guitar Model Project - Album on Imgur

    Referring to the original image: don't even look at the "spots" the original poster is having issues with. Look at the rest of the image and you can tell right away the quality level is extremely low. The walls, carpet, shelves, etc are all showing abysmal signs in low render settings. Fix this, and the "dots" will then be then transformed as much more realistic lighting calcs, attenuating fluid diffuse and reflective properties.

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    anybody knows how to remove the white spots?-interior-render-living-room-1a-.jpg

    i think i just found out the technique on how to achieve a clean render in revit. the secret lies on the light you're going to use. on this particular render, i disabled all the lighting fixtures, instead, i just use a light source. placed them on the middle of the scene and rendered it. after 4 hours or so.. this image came up. well.. a slightly toned down version of this. i did some post production in photoshop. some brightness and contrast and made the floor look shiny. the main thing here is i'm able to eliminate the white spots. also i don't have the light glares on my walls anymore. which is always a welcome sight for me.
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  10. #10
    Member truevis's Avatar
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    Quote Originally Posted by wheen9 View Post
    anybody knows how to remove the white spots on my render?
    The easiest way is to use cloud rendering, instead of local rendering inside your Revit.

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