3ds Max :: Render To Multi-channel EXR Files?
Jun 28, 2011
As 3dsmax is used in so many different areas, I try to get an overview of the use of multi-channel OpenEXR files. EXR files are usually used as an intermediate file format to hand over cg footage to compositing for further processing. Different compositing packages are handling EXR's more or less comfortable. My guess would be and that is not meant as a judgment if you comp in afx, it is less likely that you use EXR files, but when you comp with nuke, I am pretty sure you do. With composite and fusion somewhere inbetween. Also, when you work in ArchViz and MoGraph you propeably prefer psd files, while when you do tv commercials and film works, you are more likly to use EXR.
The questions in the poll are meant in a general way. It doesn't mean when you vote 'Yes' that you exlusivly render to EXR.
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Sep 9, 2004
For a long time I have been struggling to find a good workflow for what I would call "multi channel color separation". What I want is to reduce a full color RGB image into an image with only a limited number (e.g. 5-8) well-chosen colors, for instance to use as set of masks for screen print. (I'd also like to use this as an effect in itself, mimicking a typical 'screen print' or 'litho' effect on an inkjet print)
The idea is to create a set of monochrome layers or spot color channels. Colors are to be selected by myself (so not necessarily RGB or CMYK). Each channel/layer has to be a continuous tone that I transform myself into a dedicated half tone screen (e.g. with the Andromeda screen filter).
Till sofar it is clear to me. My issue is: How to separate the image in the predefined set of colors?
I can not just select a color range: I can adjust a "tolerance" but that is too general. I need the pixels of with a specific hue but with the full range of lightness (e.g. all the purple pixels that range from dark/medium purple to very light purple). The dark colors can be made dark with a black channel. I'm not sure how to deal with the saturation range.
An approach that gives sometimes a result that is to some extent acceptable is to transfer from RGB mode to an Indexed Color mode and use a custom palette. However, this does not give much control on the halftone screening process.
I envision for instance an approach of filling a layer with a solid given color, select in one way or another only those parts that correspond to the original image and subtract that layer somehow from the image. This process is then to be repeated for each color. Up till now I have not been able to figure the right options to do this. But maybe there is a better way to do it.
One final wish: it would be great if the process can take into account that some layers in the final print are (semi-)transparent. In my opinion this would exclude just selecting a color and deleting de pixels.
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Aug 3, 2012
In order to retain a wider gamut, I'd like to export a .raw file as a multichannel image (psd or any other file type to be opened in photoshop). Those channels should be e.g. c, m, y, k and two spot colours. As far as I understand, this can't be done from within photoshop, since an image presently in rgb can only be converted to a cmy mulitchannel image.
Would you achieve this by exporting the .raw from lightroom setting a colour space (under file settings) that contains such six print colours? And if yes, how ywould I produce such a colour space (that, if I understand correctly, must be present as a file itself, to be selected instead of the default choice between sRGB, Adobe RGB (1998), and ProPhoto RGB)? Or if there is another way to obtain such wider gamut image of more than cmyk.
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Aug 2, 2004
I'm working in the multi-channel format, which as you may know, does not support layers.
Does anyone have any tips on experimenting with the layout, without the use of layers?
At the moment, I've been working out the layout in another (layer-supporting) colour mode, and then recreating that layout in the multi-channl mode.
Surely there is a better way of testing different layouts, within the multi-channel mode itself? I'm finding it very inflexible at the moment.
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Jan 27, 2013
I have a biped model animated in a cave scene, with several columns in the middle of the cave.
I am rendering the model in a different render pass than the cave itself.
I would like to render out the model with the alpha channel obstructed when a cave column comes between the model and the camera, so i won't rotoscope in nuke the shape of the column.
Don't know how to call this rendering pass....
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Sep 23, 2011
When I save a render as PNG and then open it in Photoshop, it doesn't have the alpha channel, just R,G & B channels. The PNG Configuration Setup when saving the image has of course Alpha channel box checked, but is not available when I open the file in Photoshop.
Note: I was able to do this in 2008 version.
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Sep 20, 2012
I am unable to select Alpha Channel from the Options button when saving image to PNG file. see screen capture.
I want image only- no background.
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Jul 26, 2013
I am a screen printer and I print my separations from Photoshop. I routinely work with multi channel files or RGB files with additional spot color channels. I have created actions to place my registration marks, re-size images, etc to get ready to print but I manually have to create the text labels for each screen if they are missing from the original artwork.
The files I work with have channels named as "Base White, Red, Green, 284 Blue" etc indicating the ink color. What i would like to be able to do is click an action that would copy the text from the channel name and insert it into a separate or each/all channels near the top of the file so that when I print each positive it has a corresponding label for ink color.
I am not sure if this is even possible, and I am limited on my knowledge when it comes to actions and have pretty much got lucky in the past getting them to do what I want without unnecessary steps.
On my registration target action it creates a new channel with each individual reg mark then combines them into one separate channel in which I just copy the contents and select all the ink channels and fill with black to make them appear, i'm happy with the steps it takes as it isn't too much trouble and if this could do the same with labels I would be happy with that.
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Jan 2, 2014
Just made sure updates for the video card and all the hardware were current and still getting this problem where when I go to adjust a channel of video a random frame from the below channel will insert itself into the clip that I just moved as if it was married into the source footage.
Adobe Premiere Pro
Running an nVidia 660 with 331 drivers installed
Win7 64 bit ultimate
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Sep 26, 2012
How can I get the channel subassembly to attach to the assembly insertion point at the channel flowline marker? I need the flowline to follow my profile elevations.
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Jan 27, 2013
When I save an OIL PAINT file created in Photoshop CS6, it saves with red and blue shapes over the image. Before saving, the image looks fine. I'm running windows 8. Is it me or a CS6 bug?
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Nov 2, 2011
Confirm that the alpha channel is not saving correctly for TGA files using PSPro X4?
1 Create an image with an alpha channel.
2 Save image as a TGA.
3 Close and re-open the TGA then load a selection from alpha channel.
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Aug 17, 2013
I've just started using VS X6 Pro, after not doing much with video for a few years. I previously used VS 10 and 9.
We have a canon P&S camera which produces HD H264 mov files which I am editing for the first time and getting a weird problem. The files play fine on the time line, but when I try to use the multi-trim tool I get two issues:
1. Audio is badly out of sync in the multi trim window, like 1/2 second in a 20sec clip. (again, same clip plays fine on the time line)
2. When I make a multiple trim, the "play trimmed video" button does not work properly. eg if I make two selections from a clip with a gap between them, play trimmed video plays the whole clip to the end, then returns to the start of the second trim selection and plays that.
If I load up an mpeg2 .avi clip, the multi-trim tool works perfectly: audio is in sync and it correctly plays only the trimmed sections.
I have enabled smart proxy on the clips, and following another hint in a thread here, I downgraded quicktime to 7.5.5 but neither worked. Also I have installed sp1.
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Oct 16, 2012
I downloaded what is supposed to be a gimp fill pattern pack but it turns out that there is only 1 pat file named 'love patterns.pat'... I open it with gimp to view them but I get an error message 'Opening <file path>love patterns.pat failed: GIMP pattern plug-In could not be opened' how do I use multi image pat files in GIMP???
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Apr 30, 2013
I've imported three mov files and have created them on three separate layers in my AE comp screen. When I press to preview the files they play but only for about 3 seconds. I need them to play the full length of the mov files which is about 15 seconds.
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Apr 8, 2014
I am taking a long shot at this because I know its possible, but I cant seem to figure out how to do it. My problem is that I have a lot of resturants clients who have different menu (take out, dine in, delivery) that contain the same items over and over agian. Problem is that if there is a change in one you have to manually change it in other menus. I am wondering if there is a way to setup these menus where you change the text in one file (doc, txt, rft, incopy or whatever)? BUT the tricky part is that, each of these files have its own indepdent text & paragraph styles and that cant be disturb by the edits.
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Aug 31, 2012
How to Export Many ai Files To A Multi JPGS?
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Aug 25, 2013
I cannot open a file in either Photoshop CS6 or CC if the file has more than one layer. The application crashes every tme I attempt to open a multi-layer file.
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Jul 6, 2012
I am using Civil 3d 2011 and i have about 200 landxml files that I need to import into my drawing. Is there an easier way of doing this besides importing them one at a time?
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Mar 19, 2012
I have recently, and reluctantly, purchased LT2012 and have learned to hate it with an unbridled passion. I have a client that uses Acad R14dwg still and when I open their dwg files the multileader style is set to some arbitrary "standard" instead of matching the existing dimstyle of "3-16 Letters" that the file was created with. When editing old files it makes it silly to add a leader and have to create a new multileader style with every single dwg I open. Can it be done once and never be done again for all subsequent dwg files regardless of when they were created? Can it be 'matched' to an existing leader that was created years ago?
For that matter, why did Autodesk pull some dimension leaders OUT of the dimstyle options at all? All dwg files are ONLY in model space, they never use layout or paper space, but that's another topic.
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Oct 2, 2013
I opened a .JT files without issues, it shows the model as it suppose to do and also without errors. When I try render it, it disappears. The same happens when exporting to STEP.
And it is also not possible to make a section view. I have the feeling that is has to do with the fact that JT files are use for visualization. Something with nodes? Is there a way to convert the JT file that it acts as a normal Inventor file?
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Aug 11, 2012
I render 36 frames from different angles to PNG files on 3Ds Max 2013 but now I want to hide a model and make it so all the parts its blocking to also become transparent.
If you don't understand what I mean I don't want to simply "hide" the instance because then all the parts in the back that otherwise would be invisible would become visible, I just want those parts to become transparent as if I "subtract" the image of the hidden instance out of the final render image.
Like the 3d model is invisible but erases anything behind it.
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Feb 10, 2011
what software I can use for render my .dwg files. Render in AutoCAD is not quite as good as I want. I want a better software with more powerful tools and easy to use.
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Jan 6, 2014
I have two PSD files that won't render correctly in Illustrator. If I open the PSD files in Photoshop, everything looks OK, and if I print it, the file looks good. But when I place it in Illustrator, part of the picture is missing, and if I print it, it doesn't show up on the page. These are the only two files I've had trouble with and they both originated from the same company. Is there something wrong with the photo, perhaps?
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Sep 30, 2013
When importing a multi-page pdf or ps file into a multi-page document, sometimes the inserted pages will all have their Document Grid layer visibility turned on, even when the existing pages in the document all have it turned off.
If I bring up the object manager, I can go through the affected pages and 'un-eye' them one page at a time. But it's a blooming nuisance, especially when importing dozens of pages at once.
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Sep 22, 2011
I've never used this feature in the reflect/refract maps before but I'm following a few different tutorials and for whatever reason the last step where I "pick object and render maps" doesn't show a prompt, render anything, or do anything but select the object that I wanted to render the cubic map from.
Just thought I'd ask before I start installing old versions of max to try it out there.
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Aug 31, 2011
Sometime with some scenes, I have this trouble :
-when I render my beauty pass in TIF 16bits with render elements and when I leave MAX set my render-elements output files automatically, MAX use the initial name of the output beauty pass. So technically, It is suppose to make a couple of file with the same format and the same name.
-ok, I presse render to Backburner and I wait.
-Now my render is done, I go check my output files. And, sometimes, without constancy, my beauty pass is a TIF 16bits but my passes are in gray-scale or in 8bits or 16bits in random.
If I restart the job on Backburner, maybe it fix this problem, maybe not.
The unique thing I find to fix that is to set all my passes manually. but it's a pretty heavy process.
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Jan 26, 2014
My svg files wont render in safari browser but do show up in firefox, chrome & opera, why?
Here is link to site; (its a class project) [URL] .....
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Mar 14, 2011
I've purchased a sony VG10E camcorder that has sourced capture at 25mbps. I have been using premiere pro for years and now find render for the imported 1 hour source AVCHD files takes over a day ! (and still changes original source material ). I've heard that the latest video studio smart renders AVCHD.
Can this provides untouched source file reproduction after editing using my sony 25mbps quality?(i'd expect untouched to remain same, while touched/transitionss etc will require render).
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Feb 24, 2013
Using Revit Architecture 2013 with Update 1 on a Windows 7 32 bit system. I've rendered successfully in the past ( a month ago, as I recall) and then, as I continued working on hte model, the ability was gone.
I receive either the files could not be uploaded or the files could not be translated errors each time. It's quite frustrating. I love this product, but I am in grief becuase of this.
I've tried all the suggested remedies in the book: Logged in and out from Revit, cleared the firefox cookies and cache (used ccleaner) logged in and out of the 360 account on the web and said my prayers. Several times. I even uninstalled and reinstalled Revit on a different computer, to no avail.
Since other models render perfectly, I suspect a problem with the model.
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Feb 2, 2013
Where does the background render Files store...?
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