{"id":21522,"date":"2018-07-04T07:05:17","date_gmt":"2018-07-04T11:05:17","guid":{"rendered":"http:\/\/briansolomon.com\/trackingthelight\/?p=21522"},"modified":"2018-06-25T21:15:02","modified_gmt":"2018-06-26T01:15:02","slug":"overexposed-at-150-mph","status":"publish","type":"post","link":"http:\/\/briansolomon.com\/trackingthelight\/overexposed-at-150-mph\/","title":{"rendered":"Overexposed at 150 mph!"},"content":{"rendered":"

My goal was to stop Amtrak\u2019s Acela Express<\/em>at speed.<\/p>\n

I wanted to use the fastest shutter speed, so I dialed in a wide aperture on my Lumix LX-7.<\/p>\n

However, I was using the aperture priority \u2018A\u2019 setting, and when I \u2018opened up\u2019, I inadvertently overexposed, because the maximum shutter speed possibly on this camera is 1\/2000th<\/sup>of a second, and the correct shutter speed\/f-stop combination for my wide aperture was probably closer to 1\/4000th<\/sup>of a second.<\/p>\n

Whoops.<\/p>\n

The result is an overexposed digital RAW file.<\/p>\n

That means I let in too<\/em>much light. Not only is the tonality too bright, but I\u2019ve suffered data loss in the highlight areas.<\/p>\n

\"\"<\/a>
This is a Jpg made from the unadjusted RAW file. In other words I’ve not made an effort to correct for over exposure.<\/figcaption><\/figure>\n

Working with the RAW file in Lightroom, I was able to adjust my exposure, and recover some of the highlight detail lost in the in-camera Jpg.<\/p>\n

The result is pretty good.<\/p>\n

\"\"<\/a>
Working in Lightroom, I’ve adjust the RAW file to compensate for over exposure, and made the image appear more-or-less as it did at the time of exposure.<\/figcaption><\/figure>\n

So why bother getting the exposure right if you can adjust the photo after the fact?<\/p>\n

Data.<\/p>\n

Ideally, when a photo is exposed properly the RAW file should capture the maximum amount of information. When a photo, such as this one, is overexposed it suffers from data loss. Although the correction looks presentable, the bottom line is that the file has less data than if it had been correctly exposed.<\/p>\n

So while you can \u2018fix it\u2019 after the fact, it pays to get right on site\u2014when you can.<\/p>\n

Tracking the Light Posts Every Day!<\/span><\/h3>\n

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 <\/p>\n","protected":false},"excerpt":{"rendered":"

My goal was to stop Amtrak\u2019s Acela Expressat speed. I wanted to use the fastest shutter speed, so I dialed in a wide aperture on my Lumix LX-7. However, I was using the aperture priority \u2018A\u2019 setting, and when I \u2018opened up\u2019, I inadvertently overexposed, because the maximum shutter speed possibly on this camera is … Continue reading Overexposed at 150 mph!<\/span> →<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":21523,"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":[4781,4780,4722,31],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"https:\/\/i0.wp.com\/briansolomon.com\/trackingthelight\/wp-content\/uploads\/2018\/06\/Acela_2158_nb_Mansfield_MA_overexposed_UnMOD_P1750204.jpg?fit=3462%2C2310","jetpack_shortlink":"https:\/\/wp.me\/p2BVuC-5B8","jetpack_sharing_enabled":true,"jetpack_likes_enabled":true,"jetpack-related-posts":[],"_links":{"self":[{"href":"http:\/\/briansolomon.com\/trackingthelight\/wp-json\/wp\/v2\/posts\/21522"}],"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=21522"}],"version-history":[{"count":1,"href":"http:\/\/briansolomon.com\/trackingthelight\/wp-json\/wp\/v2\/posts\/21522\/revisions"}],"predecessor-version":[{"id":21525,"href":"http:\/\/briansolomon.com\/trackingthelight\/wp-json\/wp\/v2\/posts\/21522\/revisions\/21525"}],"wp:featuredmedia":[{"embeddable":true,"href":"http:\/\/briansolomon.com\/trackingthelight\/wp-json\/wp\/v2\/media\/21523"}],"wp:attachment":[{"href":"http:\/\/briansolomon.com\/trackingthelight\/wp-json\/wp\/v2\/media?parent=21522"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/briansolomon.com\/trackingthelight\/wp-json\/wp\/v2\/categories?post=21522"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/briansolomon.com\/trackingthelight\/wp-json\/wp\/v2\/tags?post=21522"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}