{"id":390,"date":"2012-05-06T18:00:41","date_gmt":"2012-05-06T16:00:41","guid":{"rendered":"http:\/\/www.book.artbeeweb.nl\/?p=390"},"modified":"2012-05-06T21:46:45","modified_gmt":"2012-05-06T19:46:45","slug":"poser-render-passes-2-shadows","status":"publish","type":"post","link":"http:\/\/www.book.artbeeweb.nl\/?p=390","title":{"rendered":"Poser Render Passes (2 Shadows)"},"content":{"rendered":"<h1>Separating the darks<\/h1>\n<p>In this first elementary step I&#8217;ll present some basics: just dealing with the shadows in the image. To do so, I need one render result without shadows, and one with shadows only. This can be done in the Render Settings, the Manual department.<\/p>\n<p>First: I uncheck the Cast Shadows option, render, and export the result.<br \/>\nSecond: I check both the Cast Shadows as well as the Shadows Only options, render and export the result.<\/p>\n<p>ngg_shortcode_0_placeholderThis gives me two images:<\/p>\n<table>\n<tbody>\n<tr>\n<td>Without shadowsngg_shortcode_1_placeholder<\/td>\n<td>Shadows onlyngg_shortcode_2_placeholder<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>Now I&#8217;ve got to combine those two in Photoshop. Actually the color pass is the base layer, but since I exported it with a transparent background (PNG, or in Poser Pro: EXR) I&#8217;ll added an extra white layer underneath. On top of that I add the shadow layer, and I set the Blend mode to Multiply (&#8220;Vermenigvuldigen&#8221;, in my Dutch version). Right now, I can adjust the shadow strength by reducing the opacity of this layer to 70%.<\/p>\n<table>\n<tbody>\n<tr>\n<td>ngg_shortcode_3_placeholder<\/td>\n<td><span style=\"font-size: large\">=&gt;<\/span><\/td>\n<td>ngg_shortcode_4_placeholder<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>This gives me the same result as reducing the shadow-intensity of the light in Poser, but without the re-render.<\/p>\n<p>In reality, all considerations that reduce the depth (darkness) of the shadows will also lead to blurred edges. Deep shadows have hard edges, while shallower shadowing comes with blurred edges. However, it&#8217;s a bad idea to use Photoshop blur un the Shadow-layer, because this 2D approach does not take the geometry of the scene into account.<\/p>\n<p>So I re-render the scene, for the shadow-pass only, with a very blurred shadow setting. Note that just tenfolding the blur radius (from default 2 to 20) might give very blodgy shadows, so I tenfold the Samples (from default 19 to 200) as well. Render and export as a new &#8220;soft shadows&#8221; image.<\/p>\n<table>\n<tbody>\n<tr>\n<td>ngg_shortcode_5_placeholder<\/td>\n<td>ngg_shortcode_6_placeholder<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>In the meantime, I&#8217;ve created a layer group for the shadow layers, put the already present Shadows only layer into it, and assigned the Multiply blending mode and the 70% opacity to the group while resetting the layer itself to Normal blending, and 100% opacity.<\/p>\n<p>Now I can add the new Soft Shadows layer to the file (and to the shadows-group), Normal blending, 100% opacity too. Then I can start experimenting with the opacity of the top shadow layer. It&#8217;s a matter of taste whether to use the hard or the soft shadows layer on top. I prefer the hard ones, as using low opacity values for that layer gives me better control and nuances over the final result.<\/p>\n<table>\n<tbody>\n<tr>\n<td>0% hard shadowsngg_shortcode_7_placeholder<\/td>\n<td>50% hard shadowsngg_shortcode_8_placeholder<\/td>\n<td>100% hard shadowsngg_shortcode_9_placeholder<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>As a result, I&#8217;ve got one slider (group opacity) to set the shadow intensity and one (top shadow layer opacity) to set the shadow edge blur. Completely interactive, without the need for a re-render. I can stop right here, or I can use this method to establish the best settings for my final render. For instance, I might conclude that I&#8217;ll have to set shadow intensity to 70%, and shadow blur halfway (say radius 10, samples 100) for my final Poser render.<\/p>\n<p>Note: if you look at the car closely, you&#8217;ll notice that there is some shadowing under the tires as well which is not dealt with. This is the result of the Ambient Occlusion setting of the light, I&#8217;ll discuss it in the next chapter.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Separating the darks In this first elementary step I&#8217;ll present some basics: just dealing with the shadows in the image. To do so, I need one render result without shadows, and one with shadows only. This can be done in the Render Settings, the Manual department. First: I uncheck the Cast Shadows option, render, and &hellip; <a href=\"http:\/\/www.book.artbeeweb.nl\/?p=390\" class=\"more-link\">Continue reading<span class=\"screen-reader-text\"> &#8220;Poser Render Passes (2 Shadows)&#8221;<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"ngg_post_thumbnail":0,"footnotes":""},"categories":[5,8],"tags":[133,136],"series":[18],"class_list":["post-390","post","type-post","status-publish","format-standard","hentry","category-poser","category-postwork","tag-poser","tag-postwork","series-poser-render-passes"],"_links":{"self":[{"href":"http:\/\/www.book.artbeeweb.nl\/index.php?rest_route=\/wp\/v2\/posts\/390","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/www.book.artbeeweb.nl\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.book.artbeeweb.nl\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.book.artbeeweb.nl\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/www.book.artbeeweb.nl\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=390"}],"version-history":[{"count":4,"href":"http:\/\/www.book.artbeeweb.nl\/index.php?rest_route=\/wp\/v2\/posts\/390\/revisions"}],"predecessor-version":[{"id":404,"href":"http:\/\/www.book.artbeeweb.nl\/index.php?rest_route=\/wp\/v2\/posts\/390\/revisions\/404"}],"wp:attachment":[{"href":"http:\/\/www.book.artbeeweb.nl\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=390"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.book.artbeeweb.nl\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=390"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.book.artbeeweb.nl\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=390"},{"taxonomy":"series","embeddable":true,"href":"http:\/\/www.book.artbeeweb.nl\/index.php?rest_route=%2Fwp%2Fv2%2Fseries&post=390"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}