{"id":11140,"date":"2015-06-23T03:45:02","date_gmt":"2015-06-23T07:45:02","guid":{"rendered":"http:\/\/briansolomon.com\/trackingthelight\/?p=11140"},"modified":"2015-06-23T08:06:07","modified_gmt":"2015-06-23T12:06:07","slug":"forty-five-minute-exposure-at-old-gorge-on-kodachrome-25","status":"publish","type":"post","link":"http:\/\/briansolomon.com\/trackingthelight\/forty-five-minute-exposure-at-old-gorge-on-kodachrome-25\/","title":{"rendered":"Forty Five Minute Exposure at Old Gorge on Kodachrome 25"},"content":{"rendered":"<p>Forty Five Minute Exposure at Old Gorge on Kodachrome 25<\/p>\n<p>Back in the day, I\u2019d attempt to make long exposures on Kodachrome 25. I was facing a nearly insurmountable wall of diminishing returns, because of this film\u2019s reciprocity curve it suffered very\u00a0poor low-light sensitivity. In extremely low light (when minimum exposure times were calculated to be longer than about 5 minutes), K25\u2019s effective ISO rating approached zero.<\/p>\n<p><a href=\"http:\/\/briansolomon.com\/trackingthelight\/2015\/06\/23\/forty-five-minute-exposure-at-old-gorge-on-kodachrome-25\/sp_at_gorge_105mm_45min_exposure_km_brian-solomon-234642\/\" rel=\"attachment wp-att-11141\"><img loading=\"lazy\" decoding=\"async\" data-attachment-id=\"11141\" data-permalink=\"http:\/\/briansolomon.com\/trackingthelight\/forty-five-minute-exposure-at-old-gorge-on-kodachrome-25\/sp_at_gorge_105mm_45min_exposure_km_brian-solomon-234642\/\" data-orig-file=\"https:\/\/i0.wp.com\/briansolomon.com\/trackingthelight\/wp-content\/uploads\/2015\/06\/SP_at_Gorge_105mm_45min_exposure_KM_Brian-Solomon-234642.jpg?fit=820%2C521\" data-orig-size=\"820,521\" data-comments-opened=\"1\" data-image-meta=\"{&quot;aperture&quot;:&quot;0&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;0&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;0&quot;,&quot;iso&quot;:&quot;0&quot;,&quot;shutter_speed&quot;:&quot;0&quot;,&quot;title&quot;:&quot;&quot;,&quot;orientation&quot;:&quot;0&quot;}\" data-image-title=\"SP_at_Gorge_105mm_45min_exposure_KM_Brian Solomon 234642\" data-image-description=\"\" data-image-caption=\"\" data-medium-file=\"https:\/\/i0.wp.com\/briansolomon.com\/trackingthelight\/wp-content\/uploads\/2015\/06\/SP_at_Gorge_105mm_45min_exposure_KM_Brian-Solomon-234642.jpg?fit=709%2C450\" data-large-file=\"https:\/\/i0.wp.com\/briansolomon.com\/trackingthelight\/wp-content\/uploads\/2015\/06\/SP_at_Gorge_105mm_45min_exposure_KM_Brian-Solomon-234642.jpg?fit=474%2C301\" class=\"aligncenter size-full wp-image-11141\" src=\"https:\/\/i0.wp.com\/briansolomon.com\/trackingthelight\/wp-content\/uploads\/2015\/06\/SP_at_Gorge_105mm_45min_exposure_KM_Brian-Solomon-234642.jpg?resize=474%2C301\" alt=\"SP_at_Gorge_105mm_45min_exposure_KM_Brian Solomon 234642\" width=\"474\" height=\"301\" srcset=\"https:\/\/i0.wp.com\/briansolomon.com\/trackingthelight\/wp-content\/uploads\/2015\/06\/SP_at_Gorge_105mm_45min_exposure_KM_Brian-Solomon-234642.jpg?w=820 820w, https:\/\/i0.wp.com\/briansolomon.com\/trackingthelight\/wp-content\/uploads\/2015\/06\/SP_at_Gorge_105mm_45min_exposure_KM_Brian-Solomon-234642.jpg?resize=205%2C130 205w, https:\/\/i0.wp.com\/briansolomon.com\/trackingthelight\/wp-content\/uploads\/2015\/06\/SP_at_Gorge_105mm_45min_exposure_KM_Brian-Solomon-234642.jpg?resize=709%2C450 709w, https:\/\/i0.wp.com\/briansolomon.com\/trackingthelight\/wp-content\/uploads\/2015\/06\/SP_at_Gorge_105mm_45min_exposure_KM_Brian-Solomon-234642.jpg?resize=472%2C300 472w\" sizes=\"(max-width: 474px) 100vw, 474px\" data-recalc-dims=\"1\" \/><\/a><\/p>\n<p>This view was made on the west slope of Donner Pass using\u00a0my Nikon F3T fitted with an f1.8 105mm lens (opened to f1.8) and firmly mounted on a Bogen 3021 tripod. I opened the shutter to allow for the passing of westward SP freight. The head-end headlights and oscillating lights helped illuminate the setting, while the light streaks were largely the result of the helper at the back.<\/p>\n<p>At the left, you can see the lights of Sacramento, California, more than 50 miles away and some 2,000 feet lower. What\u2019s missing is the tremendous sense of elevation and the vast depth of the American River Canyon at the left. Here we have empty black space.<\/p>\n<p>The scene was cosmic. The sound show was sublime. My slide? Not so great. In a situation like this one, Provia 100F would have performed much better, but it didn\u2019t exist then. Today\u2019s Digital cameras would be vastly superior. Compare this view, to the images I made at <a href=\"http:\/\/wp.me\/p2BVuC-2zK\">State Line Tunnel<\/a> back in February.<\/p>\n<p>See: <a href=\"http:\/\/wp.me\/p2BVuC-2zK\">State Line Tunnel by the Light of the Moon.<\/a>(&lt;&#8212;This is a link, <a href=\"http:\/\/wp.me\/p2BVuC-2zK\">click it<\/a> to see great night photos!)<\/p>\n<p style=\"text-align: center;\"><strong><a href=\"http:\/\/briansolomon.com\/trackingthelight\/\" target=\"_blank\">Tracking the Light<\/a>\u00a0posts\u00a0new\u00a0material\u00a0every\u00a0morning.<\/strong><\/p>\n<p style=\"text-align: center;\"><strong>Please share\u00a0<a href=\"http:\/\/briansolomon.com\/trackingthelight\/\" target=\"_blank\">Tracking the Light<\/a><\/strong><strong>!<\/strong><\/p>\n<p style=\"text-align: center;\"><a href=\"http:\/\/briansolomon.com\/trackingthelight\/\">http:\/\/briansolomon.com\/trackingthelight\/<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Forty Five Minute Exposure at Old Gorge on Kodachrome 25 Back in the day, I\u2019d attempt to make long exposures on Kodachrome 25. I was facing a nearly insurmountable wall of diminishing returns, because of this film\u2019s reciprocity curve it suffered very\u00a0poor low-light sensitivity. In extremely low light (when minimum exposure times were calculated to &hellip; <a href=\"http:\/\/briansolomon.com\/trackingthelight\/forty-five-minute-exposure-at-old-gorge-on-kodachrome-25\/\" class=\"more-link\">Continue reading <span class=\"screen-reader-text\">Forty Five Minute Exposure at Old Gorge on Kodachrome 25<\/span> <span class=\"meta-nav\">&rarr;<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":11141,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_s2mail":"yes","jetpack_post_was_ever_published":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"footnotes":"","_jetpack_memberships_contains_paid_content":false,"jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","enabled":false}}},"categories":[10],"tags":[504,2740,2741],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"https:\/\/i0.wp.com\/briansolomon.com\/trackingthelight\/wp-content\/uploads\/2015\/06\/SP_at_Gorge_105mm_45min_exposure_KM_Brian-Solomon-234642.jpg?fit=820%2C521","jetpack_shortlink":"https:\/\/wp.me\/p2BVuC-2TG","jetpack_sharing_enabled":true,"jetpack_likes_enabled":true,"jetpack-related-posts":[],"_links":{"self":[{"href":"http:\/\/briansolomon.com\/trackingthelight\/wp-json\/wp\/v2\/posts\/11140"}],"collection":[{"href":"http:\/\/briansolomon.com\/trackingthelight\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/briansolomon.com\/trackingthelight\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/briansolomon.com\/trackingthelight\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/briansolomon.com\/trackingthelight\/wp-json\/wp\/v2\/comments?post=11140"}],"version-history":[{"count":5,"href":"http:\/\/briansolomon.com\/trackingthelight\/wp-json\/wp\/v2\/posts\/11140\/revisions"}],"predecessor-version":[{"id":11486,"href":"http:\/\/briansolomon.com\/trackingthelight\/wp-json\/wp\/v2\/posts\/11140\/revisions\/11486"}],"wp:featuredmedia":[{"embeddable":true,"href":"http:\/\/briansolomon.com\/trackingthelight\/wp-json\/wp\/v2\/media\/11141"}],"wp:attachment":[{"href":"http:\/\/briansolomon.com\/trackingthelight\/wp-json\/wp\/v2\/media?parent=11140"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/briansolomon.com\/trackingthelight\/wp-json\/wp\/v2\/categories?post=11140"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/briansolomon.com\/trackingthelight\/wp-json\/wp\/v2\/tags?post=11140"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}