{"id":8,"date":"2015-08-12T10:41:07","date_gmt":"2015-08-12T10:41:07","guid":{"rendered":"http:\/\/jaerder.videmogroup.org\/blog\/?p=8"},"modified":"2015-08-12T10:41:07","modified_gmt":"2015-08-12T10:41:07","slug":"pinhole-photography-experiments","status":"publish","type":"post","link":"https:\/\/jaerder.videmogroup.org\/blog\/index.php\/2015\/08\/12\/pinhole-photography-experiments\/","title":{"rendered":"Pinhole Photography Experiments."},"content":{"rendered":"

After being in a workshop on pinhole photography (held at offo<\/a>, in Aveiro), and getting a grasp of the\u00a0development\u00a0process, it was time to actually start to build a simple camera, as well as to start developing its pictures.<\/p>\n

But the initial results were not quite what I expected in terms of sharpness.<\/p>\n

\"Pinhole<\/a>
Photography taken at Aveiro, during the pinhole workshop. This one is quite sharp.<\/figcaption><\/figure>\n

<\/h2>\n

<\/p>\n

The Camera<\/h2>\n

One of the issues that I had during the improvised camera at the workshop was the difficulty in ensuring the photographic paper was on the proper position before closing the camera.<\/p>\n

Therefore my build should have a simpler way to load the paper into it.<\/p>\n

\"Pinhole
Finished and Closed pinhole camera. A tin can was chosen since its more robust than a cardboard shoe box. A Hard Disk Magnet is used as a shutter.<\/figcaption><\/figure>\n

The solution found to ease the photographic paper loading into the camera was to go for a “dual box” design, where the paper is loaded into a “inner box” made with black\u00a0cardboard. This made unnecessary to paint the inside of the tin box in black.<\/p>\n

\"Pinhole
Pinhole outer casing and inner box. Photographic paper is loaded into the back cardboard box, and then the cardboard box is loaded into the tin can.<\/figcaption><\/figure>\n

The pinhole was made by puncturing the can frontal wall with a needle, and then removing the protrusion on the opposite side of the hole with sandpaper.<\/p>\n

\"Pinhole
The pinhole is visible right above the heart symbol. Notice the magnet being used as a manual shutter.<\/figcaption><\/figure>\n

The Development Process<\/h2>\n

The Standard 3 bath process was used. (Developer, Stop Bath, Fixer).
\nUnfortunately I was unable to find a dedicated safety light to use on my improvised darkroom. A LED RGB strip set to dim red was tested with good results.<\/p>\n

The whole development process was done at ambient temperature at the recommended dilution values.<\/p>\n

\"Supplies
Supplies used. Unfortunately I was unable to obtain them locally.<\/figcaption><\/figure>\n
\"Development
Development Process.<\/figcaption><\/figure>\n

 <\/p>\n

The Results so far<\/h2>\n

 <\/p>\n

\"Taken<\/a>
Taken at dusk, exposure time of 5 minutes.<\/figcaption><\/figure>\n
\"Exposure<\/a>
35 and 25 seconds exposure time
(D90 recomended 1\/20 f22 @ iso 200)<\/figcaption><\/figure>\n
\"my_pinhole<\/a>
30 seconds exposure time. (it overexposed)<\/figcaption><\/figure>\n

Conclusions so far<\/h2>\n

Taking into account the results I had at the pinhole workshop, I expected sharper pictures when I attempted to replicate the whole process at home.<\/p>\n

The main obvious reason may be the pin hole diameter. \u00a0It is not trivial to punch a very small hole into metal without special equipment. (at the workshop a plastic sheet\u00a0was used and the pinhole was done with a hot needle).<\/p>\n

Nothing that cant be solved with some rework on the camera chassis.<\/p>\n

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

After being in a workshop on pinhole photography (held at offo, in Aveiro), and getting a grasp of the\u00a0development\u00a0process, it was time to actually start to build a simple camera, as well as to start developing its pictures. But the initial results were not quite what I expected in terms of sharpness.<\/p>\n","protected":false},"author":2,"featured_media":27,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[3,2,4],"tags":[5,6,7],"class_list":["post-8","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-analogue","category-photography","category-pinhole","tag-analogue-photography","tag-photography","tag-pinhole"],"jetpack_featured_media_url":"https:\/\/jaerder.videmogroup.org\/blog\/wp-content\/uploads\/2015\/08\/my_pinhole-05.jpg","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/jaerder.videmogroup.org\/blog\/index.php\/wp-json\/wp\/v2\/posts\/8","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/jaerder.videmogroup.org\/blog\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/jaerder.videmogroup.org\/blog\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/jaerder.videmogroup.org\/blog\/index.php\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/jaerder.videmogroup.org\/blog\/index.php\/wp-json\/wp\/v2\/comments?post=8"}],"version-history":[{"count":14,"href":"https:\/\/jaerder.videmogroup.org\/blog\/index.php\/wp-json\/wp\/v2\/posts\/8\/revisions"}],"predecessor-version":[{"id":32,"href":"https:\/\/jaerder.videmogroup.org\/blog\/index.php\/wp-json\/wp\/v2\/posts\/8\/revisions\/32"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/jaerder.videmogroup.org\/blog\/index.php\/wp-json\/wp\/v2\/media\/27"}],"wp:attachment":[{"href":"https:\/\/jaerder.videmogroup.org\/blog\/index.php\/wp-json\/wp\/v2\/media?parent=8"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/jaerder.videmogroup.org\/blog\/index.php\/wp-json\/wp\/v2\/categories?post=8"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/jaerder.videmogroup.org\/blog\/index.php\/wp-json\/wp\/v2\/tags?post=8"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}