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210 comments found!
Thread: anyone interested in FREE GLOBAL ILLUMINATION? | Forum: Poser - OFFICIAL
Yes, I hope no need for 60-100. I'm going to try 60 though just for giggles. I also customize mine for background. I have not tried Travelers tut yet on getting them from photographs, I actually am going on the idea that you can get them from Poser itself. In previous thread I described my method (although just testing level) of getting the light set from a 360 degree Poser scene. Now, I am building an entire set in order to derive synthetic HDRI from a Poser made lightprobe. Since it will take me a while to build all the models, (just a table and a wall with a window are so far done), I probably won't be able to show renders for a while. I want to see what a light set derived from a Poser scene looks like dropped right back into the same Poser scene, avoiding the need for background photograph or blurry "inside the sphere background" image. This method allows you to derive many lights from just a few. Traveler's excellent idea of painting the source image sides white will definitely be of use the way I am deriving the images from a 3d lightprobe. Thanks Traveler! Thanks N1ppon! regards caravaggio
Thread: anyone interested in FREE GLOBAL ILLUMINATION? | Forum: Poser - OFFICIAL
Sure, freestuff would be good. I have question though. I make my own HDRI light sets. I have found that 20 lights is great for a small scale still life, but so far rendering a whole figure (not just a head shot) it seems like 20 lights isn't enough. I went to 40, still unconvincing. I am not really comparing HDRI renders with old fashioned Poser rendering, but to Cinema 4D or Lightwave renders. This technique works a lot better than Poser renders up to date. I am considering going to like 60-100 lights for a full body shot when I get some time. Also, I have found that by using LightPanel to change all the lights to spot and visible, I can see what the lights are doing and delete, modify each light as needed. I have learned a lot about lighting in Poser just fooling around this way. If someone wants to learn about lighting through experimentation, free light sets or homemade ones are a great way to do it. I did not get Travelers lights since I make my own. How many lights are in his sets? How many lights are you planning for your sets? I am wondering if this technique may evolve into light sets designed for specific things like, bust portrait (not what I meant), still life, full body portrait, etc. I have also noticed, as has been pointed out before by others here, that really many fewer lights can provide similar results, once one learns what the lights are doing.
Thread: HELP ! Poser 5 Firefly production render keeps crashing | Forum: Poser - OFFICIAL
Maybe you are right. I understood that bucket size has to do with how much memory is used during a render. Maybe it just goes too far and memory problems appear. It sounds like more than just one thing can do it too. I've used bucket sizes of 300 before, and I don't think I was even pushing it this time. However, lower it back down, and it works. Would a ram manager fix this? I don't know anything about stuff like that.
Thread: HELP ! Poser 5 Firefly production render keeps crashing | Forum: Poser - OFFICIAL
Whew! I went back and reset the bucket size back to 150 and it started working again! I tried it with ray tracing and without, both worked! I got just a 850mh III with 512 ram. Snif... The only thing I can pin it to is bucket size.
Thread: HELP ! Poser 5 Firefly production render keeps crashing | Forum: Poser - OFFICIAL
Hey! I just came here to report the exact same thing! I have never had this happen before until just within the last hour! It hangs and does just what Orio says. I don't have any hair, just some objects sitting on a table with nine lights. I had just deleted a bunch of lights. I saved, bebooted, and the same thing happened. I am using a bucket size of 300. I'm going back to make sure my bucket size isn't too big.
Thread: Atmosphere/DOF | Forum: Poser - OFFICIAL
Harem Suit by PhilC. Judy. Neftis hair. Cyclorama. Firewyrks background.
Thread: stewers excellent Lightgen script! | Forum: Poser - OFFICIAL
Yes I've managed animation as well, just have to set the computer to render prior to going to sleep! Hee Hee.
Thread: ? about Canceling during Rendering | Forum: Poser - OFFICIAL
No it still hangs. It takes so long to get out sometimes I just won't cancel. I only do it if I know I goofed real bad on settings.
Thread: Atmosphere/DOF | Forum: Poser - OFFICIAL
I have used this atmosphere before, I am recalling that clicking volume under mat room lets it work. Sound like you did that. Then under properties on your chosen light, click atmosphere on. Sound like you did that too. Set the value there very low. I am recalling .003 or .3 or .03 or some such. (sorry I'm at work.) Make sure you have a full background set of objects or planes that are behind where you want your effect. It can't render atmosphere over emptiness. It sounds like you knew that one too, if your objects are turning white. The key was that atmosphere strength dial in the light properties. It just needs to be set very low. Also, other bright lights will wash out this effect. Don't know about the depth of field though. Hope this helps. p.s. I think it has to be spotlight.
Thread: stewers excellent Lightgen script! | Forum: Poser - OFFICIAL
"Ah, hen house?, yes Sir."
"Eggs-cellent..."
Thread: stewers excellent Lightgen script! | Forum: Poser - OFFICIAL
P.S. Stewer's intimation in an earlier thread that one must become proficient with P5's material nodes should not be underestimated. How an object looks can be dramatically improved by attending to the material nodes and taking time to understand what they do. I would like to raise a world-wide community glass to stewer for his tireless efforts in the realms of lighting and rendering.! Thanks, stewer!
Thread: stewers excellent Lightgen script! | Forum: Poser - OFFICIAL
Ok, now I have a little more time. If you haven't yet looked into utilizing stewer's script for translating the LightGen, the very first thing you should do is head over to: http://www.keindesign.de/stefan/poser/ This is stewer's website. Read the FireFly FAQ he made and print it out! This is important documentation for Poser5. Then investigate the links there under HDRI python script. You gotta get three things from here. Stewer's script, HDRShop, and the LightGen plugin. While on the HDRShop and LightGen links read about HDRI research to understand what the idea is, and understand that the LightGen plugin is an adjunct to HDRShop. It will be reading the intensities of light coming in at all 360 degrees from a source image. Read and follow all instructions for installing HDRShop and creating the plugins folder for the LightGen plugin. VERY important note, the downloads are clearly marked for academic/non-commercial use, and to contact the creators if you want to use these commercially. You also need to register to download. Go ahead and print out the web link instructions for Light Gen. You will need these instructions later. Now, being ready to go, fire up P5 and open or create a 360 degree scene. You want a clear area in the center of the workspace. You need a ground, a skydome, and some props you want to be reflected in your lightprobe (which you are going to make.) There is a lot of room here for experimentation. I used hmann's excellent 3D world builder packs to whip up a 360 ground and sky combo. I put in some other props by !TE. Light the scene. Just do what you know on that. Stewer's suggestion to get Jeremy Birn's Digital Lighting and Rendering is worth taking to heart. A great book. Don't be too worried though, place some lights to light up the sky dome, ground and the surrounding objects. This process is extremely forgiving so don't sweat the lighting too much, cuz its going to be boiled down later anyway. Now select the hi-res sphere from the props menu. It comes into the center of your scene. You will probably need to raise it and increase the scale. Here is where P5 beats the crap out of sampling a real life scene with a probe. You can make the scale of the probe whatever you want! (It does not weigh 10,000 pounds! Hee Hee.) Use your eye for this. Important to remember too... you are going to be "taking a picture" of the 3D scene as seen by the camera looking into the probe only. You want sufficient detail in this so scale accordingly. Center the camera you are using to level with the ground, pointing directly at the light probe. Zoom in so that you have the ball centered in the frame. Use a square image window and make sure the ball is almost touching the four sides of the image. Now set the render settings to raytracing on, shadow casting on, bla, bla, basically you want the best image P5 can produce, so go for broke. (Using stewer's FireFly FAQ that is). If you only have a handful of lights in your image, it won't take that long to render anyway. Lastly, set yourself up a render to a new window and set it to match document window. Go to the materials room and select the probe with the eyedropper tool. Go down to Reflection Color and add a raytracing reflection node. You can leave this at default, if you like. Now, without leaving the materials room, render your scene. Since you have it set for render to new window, it will appear and still render just like you were in the pose room. Experiment here. Your image is supposed to look like the "mirrored ball" images you saw (and hopefully downloaded, cuz you can use these with LightGen and stewer's script.) Notice that there is black around the "ball". This will not be so in your render. You will simply make the black areas in Photoshop. Don't be afraid to render lots of times to get a cool image. Also, remember to up the bucket size. I use 200. This makes experimentation less lengthly. After you are happy with the image, open it in your image editing program and circle select/lasso the ball. Be as careful as you can here, make sure that your circle is a hair' breadth (pixel distance) to the inside of the circle. Hold down shift to make sure you've got a perfect circle. Reverse the selection and fill with black. (I'm not sure if this step is needed, but it looks cool.) Finally, crop the image with the square selection tool so that it is perfectly touching the edges of the square image. Save the image as a .bmp where you want to find it. Whew! Now the quick part! Open HDRShop. Open your image. (Note: HDRShop supports a special HDRI format which you can get source files for from the net. Here we are opening LDR Low Dynamic Range image in .bmp format.) You will see a box warning you that your image must be converted. For now use the defaults. Use the LightGen instructions you printed earlier. Read the section marked Usage. This describes the process for converting a sphere map to a panoramic map. Create a large panoramic image, such as the default setting generates. Save this as a .bmp. This will only be used if you want to use it for making a background with it on the inside of a large (50000 scale) prop ball, with the normals flipped in the group tool. This image should be 2:1 format. Twice as wide as tall. See the above images in this thread for what I did. Now redo the same operation and set the output width to 128, just as the instructions say. Under the plugins menu, select LightGen. A box opens and has options. Check "scale light output". Set this value accordingly. .1=dark and 1= as bright as the scene is as you wanted it to look when you made your light probe image. Browse your result to the desktop instead of a folder you can't see when HDRShop is open. Name and remember the name of the file. This is for working around a known bug. Finally you can adjust the number of lights you want LightGen to generate. The default is 20, so I just stuck with that. It is said that you can go more on this. You want a lot of lights for nice gradiated shadow maps, but not so many that the effect is muddied. LightGen creates a mean for light output that simulates the whole total light of a panoramic image. Click on execute. Wait a bit, and a warning box will appear. This is the bug. Wait til you see two temp files and the one you named earlier appear on the desktop. Only now click on the warning box and close out of HDRShop. Delete the two temp files and move the new text file to a directory you will use for LightGen output files. Now open P5 and now you can go different directions here. All the grunt work has now been done. If you haven't got ockham's excellent light Python scripts, search Renderosity for them and get them. Install them and stewer's Python script in your Python P5 directory. At minimum you need ockham's DeleteLights and LightPanel in additon to stewer's hdri script. Here I created a new scene with a sphere and a cylinder and a clothplane. I placed a sphere around the scene set at 50000 scale. On the large sphere I inverted the normals (which side holds the texture node info) so that the surface renders inward instead of outward. The camera must be inside this sphere, with cast shadows turned off on the sphere. Create, open a new scene, or open the very scene you started with (delete the probe or set it to invisible). When you are all done, open your Python window and and load up the three Python scripts by navigating to the P5 Python folder and evoking them one by one. Now, click on DeleteLights to get rid of the default scene lighting. Click on hrdi and then open your lights file. P5 will add 20 (or however many you asked for in LightGen) lights to your scene. Render. You should see quite an improvement over P5 default lighting. Use LightPanel to experiment here with setting all light parameters at the same time. I turned down the shadow map size to make softer blending and faster rendering. Note: you can easily turn up one light and increase it's shadow map size for a crisp and defined shadow that corresponds to what appears to be the main light source on your image. You can even raytrace that shadow (click raytraced shadows in the light properties tab). Now you are ready. Known problems: strange reactions of surface material settings to light sets. This I think can happen anyway if you are lighting in P5. I found that altering the angle of the camera can alleviate this problem, at least for stills. Also, your lights will cast shadows of the subject objects back onto the globe background. You must turn the shadow casting off on these lights as needed. There are alot of lights casting shadows, turning off a few does not really hamper your final image. If you are using reflection in the image, (as I have done above) then you must make sure your Background sphere is large enough to make the resulting "dots" small. I have not found a way to make an object cast shadows and not have their shadows find their way to your reflected object's rendered surfaces. Also, the degradation of the panoramic image on the background sphere I would like to know how to correct. My thinking here is that you want to substitute 3D geometry for this by using the original source file that you derived your lightset from. Hope this helps... Regards, caravaggio
Thread: stewers excellent Lightgen script! | Forum: Poser - OFFICIAL
I'll start on a tut when I get home from work (I'm home at lunch now). If you want to get started more quickly, just search the forum for HDRI. This will take you back to a thread from 9.20.03 or so. Stewer started all of the HDRI type lighting idea. It involves downloading HDRShop, Paul Debevec's Lightgen plugin. You have to print out a couple of web pages for getting the idea. Basically, 1)create 360 degree poser scene. 2)place hi-res sphere into scene set to 100 reflection. 3)light scene as desired. 4)render sphere close up. (Don't worry, it won't bite. (Poser's photographer is quite invisible!) 5)take into Photoshop. 6)perfectly crop image so that it's square with the sphere perfectly fitting. 7)open HDRShop. Open image. 8)convert to a large panorama. Save as a jpeg. (this will be useful if you want to include the image in the scene for reflection purposes.) 9)reopen the first image and convert it again to a small panorama, just 128 wide. (you're just kiling your Lightgen output wait if you do a larger image.) 10)select lightgen under plugins. Use default settings. Check scale light output. It is o.k. set at one. .7 or so makes a more rainy day type image. Browse the output to the desktop. The plugin will report an error. It's o.k. it's still running. When you see two temporary files on the desktop, and one with the name you gave it, the program is done. You can close out of it. (note: start with number of lights set at 20 just to see what happens.) Go put the light file in a folder you will make for keeping lightset files. This is the file that stewer's script uses to make the lights. 11)open poser and create your scene. 12)open Python window and load in stewer's script, delate lights script (ockham) and Light Panel (ockham). 13)click on delete lights to eliminate all original lights. 14)click on hrdi (stewer's). and when it asks you for a file, navigate to the Lightgen output. Open this. Poser5 will now insert 20 lights into your scene. 15)of course now the fun begins. I streamlined my workspace for rendering lots of times. I start with no textures so that shadow maps render fast. Textures will dramatically increase rendering time. Also you can use Lightpanel to set the shadowmap value for all the lights simultaniously. I set them low for even better softness and faster rendering. Well, got to go back to work. I'll get back to this tonight. If you have any questions, please just ask. This might get you started, but I took a while to get the gist myself. Just be patient and you'll be able to do this stuff also. It's actually a fine surefire way to throw 20 (note or more) lights into a scene that have soem ryhme and reason to them. It's very fast to do too once you get the hang of it. Also, I have Poser5 with SR3 installed. Later, caravaggio
Thread: stewers excellent Lightgen script! | Forum: Poser - OFFICIAL
Oh yea, I did some post on V3's shoulder. Hee Hee! Also, I should note that this technique creates lights that can still be altered or tweaked to one's taste. That is all... caravaggio
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Thread: New Tex for Koz KoyokoHairMK3 and 3Dream's Classic Cut | Forum: Poser - OFFICIAL