tag:blogger.com,1999:blog-3134273261680034735.post7926416819359915234..comments2023-07-25T11:39:34.104+03:00Comments on VFX Rants: Using STMap based deformations for Lens Distortion workflowAnonymoushttp://www.blogger.com/profile/16782703778007092681noreply@blogger.comBlogger6125tag:blogger.com,1999:blog-3134273261680034735.post-28749910567923504282019-07-15T11:01:07.791+03:002019-07-15T11:01:07.791+03:00what happens if your lens grid is fullframe (open ...what happens if your lens grid is fullframe (open gate) and your plate is cropped. Do you crop the lens grids to the same aspect ratio?Jhttps://www.blogger.com/profile/12473668415575326057noreply@blogger.comtag:blogger.com,1999:blog-3134273261680034735.post-1870365403143427272019-07-15T10:59:43.550+03:002019-07-15T10:59:43.550+03:00This comment has been removed by the author.Jhttps://www.blogger.com/profile/12473668415575326057noreply@blogger.comtag:blogger.com,1999:blog-3134273261680034735.post-87031595105896511582019-02-20T01:25:53.782+02:002019-02-20T01:25:53.782+02:00This is the most thorough explanation that I'v...This is the most thorough explanation that I've seen to date. Well done, and thank you.Anonymoushttps://www.blogger.com/profile/07427788309075957807noreply@blogger.comtag:blogger.com,1999:blog-3134273261680034735.post-86314444267144060622016-09-02T21:28:06.430+03:002016-09-02T21:28:06.430+03:00Hi, would creating the STmap in the Nuke Lensdisto...Hi, would creating the STmap in the Nuke Lensdistortion node be an effective method. I have found the workflow really confusingsputmanhttps://www.blogger.com/profile/15827124826805487671noreply@blogger.comtag:blogger.com,1999:blog-3134273261680034735.post-24557338749094963132014-07-08T12:53:08.214+03:002014-07-08T12:53:08.214+03:00Yes, you are correct, adding 0.5 gives more accura...Yes, you are correct, adding 0.5 gives more accurate results. It was also discussed in RiseFX Nukepedia tutorial comments section also, but for some reason I didn't add it to my description. Thanks for pointing it out!<br /><br />Weird warping could be result of incorrect reading or writing of exr file in syntheyes. Check that you read it in as 32-bit image and that project handles files as float, not 8-bit images. Losing bit depth can make resulting distortion look funky and stepped.Anonymoushttps://www.blogger.com/profile/16782703778007092681noreply@blogger.comtag:blogger.com,1999:blog-3134273261680034735.post-33887168622753755542014-04-10T23:49:44.329+03:002014-04-10T23:49:44.329+03:00Have you found using this more helpful? Its fixes ...Have you found using this more helpful? Its fixes the offset seen when comparing what comes from syntheyes raw undistorted and the output of the stmap undistort. <br />r = (x+.5)/width<br />g = (y+.5) / height<br /><br />I'm also getting a weird warping with the stmap.. Its not a perfect match with what comes raw from syntheyes. Any ideas?Anonymoushttps://www.blogger.com/profile/08131293813363374299noreply@blogger.com