{"id":1597,"date":"2026-09-08T23:10:12","date_gmt":"2026-09-08T23:10:12","guid":{"rendered":"https:\/\/www.kevindavisphoto.com\/blog\/?p=1597"},"modified":"2026-09-08T23:10:12","modified_gmt":"2026-09-08T23:10:12","slug":"a-wide-view-of-a-county-fair","status":"publish","type":"post","link":"https:\/\/www.kevindavisphoto.com\/blog\/a-wide-view-of-a-county-fair\/","title":{"rendered":"A Wide View – of a County Fair"},"content":{"rendered":"\n

When visiting an agricultural fair – known commonly as a county or state fair – I generally use a hand-held camera with two interchangeable lenses covering wide-angle and telephoto. <\/p>\n\n\n\n

Recently having changed my wide-angle lens, it is now a bit wider than before. It was 93\u00ba angle along the wide part of the image, but a different lens now goes to 104\u00ba angle. Some other cameras, even mobile phone cameras, can give an even wider view … if you explicitly change to the wide camera. However, switching to such wide angle requires a bit of forethought and imagination how that view might look. <\/p>\n\n\n

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As the angle of view gets really wide, some optical distortions are to be expected. The widest angle may cause straight lines to curve, commonly known as barrel distortion. If lines remain straight, parallel lines can readily appear not parallel; this is commonly called keystoning or perspective distortion. Some of these distortions can be undone digital image processing.<\/p>\n\n\n\n

This first image is the original from the camera, shot with a 14mm lens. Notice that the walls of the building are neither vertical nor parallel. Expecting this shot might require some distortion correctly, I intentionally, I left a bit of room on the left and right side. The image is perhaps a bit under-exposed, but a histogram of the image shows that the shadow detail is good and only the extreme highlights (windows & door) are blown out.<\/p>\n\n\n\n

In post-processing this image, you might choose to only increase the overall brightness. But I planned from the beginning to correct for the perspective distortion. The second image here shows my edits to perspective, brightness, and color. Notice the walls of the building are straight and vertical.<\/p>\n\n\n\n

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Here is another example where the wide angle of view results in distortion and I chose (when making the shot) to compensate in post-processing.<\/p>\n\n\n\n

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After:<\/p>\n\n\n\n

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

When visiting an agricultural fair – known commonly as a county or state fair – I generally use a hand-held camera with two interchangeable lenses covering wide-angle and telephoto. Recently having changed my wide-angle lens, it is now a bit wider than before. It was 93\u00ba angle along the wide part of the image, but […]<\/p>\n","protected":false},"author":2,"featured_media":1603,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[71,54,20,6,31,22],"tags":[],"class_list":["post-1597","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-lens","category-newengland","category-photo","category-photoshop","category-seasonal","category-technique"],"_links":{"self":[{"href":"https:\/\/www.kevindavisphoto.com\/blog\/wp-json\/wp\/v2\/posts\/1597","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.kevindavisphoto.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.kevindavisphoto.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.kevindavisphoto.com\/blog\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.kevindavisphoto.com\/blog\/wp-json\/wp\/v2\/comments?post=1597"}],"version-history":[{"count":1,"href":"https:\/\/www.kevindavisphoto.com\/blog\/wp-json\/wp\/v2\/posts\/1597\/revisions"}],"predecessor-version":[{"id":1604,"href":"https:\/\/www.kevindavisphoto.com\/blog\/wp-json\/wp\/v2\/posts\/1597\/revisions\/1604"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.kevindavisphoto.com\/blog\/wp-json\/wp\/v2\/media\/1603"}],"wp:attachment":[{"href":"https:\/\/www.kevindavisphoto.com\/blog\/wp-json\/wp\/v2\/media?parent=1597"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.kevindavisphoto.com\/blog\/wp-json\/wp\/v2\/categories?post=1597"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.kevindavisphoto.com\/blog\/wp-json\/wp\/v2\/tags?post=1597"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}