http://www.flickr.com/photos/jordandickinson/ Sun, 09 Dec 2012 22:18:14 -0800 Sun, 09 Dec 2012 22:18:14 -0800 http://www.flickr.com/ http://farm3.staticflickr.com/2104/buddyicons/25136202@N08.jpg?1223191257#25136202@N08 http://www.flickr.com/photos/jordandickinson/ http://www.flickr.com/photos/jordandickinson/8260626794/ <p><a href="http://www.flickr.com/people/jordandickinson/">slantface</a> posted a photo:</p> <p><a href="http://www.flickr.com/photos/jordandickinson/8260626794/" title="ambrotype #35 - catherine"><img src="http://farm9.staticflickr.com/8355/8260626794_1af3edcda3_m.jpg" width="164" height="240" alt="ambrotype #35 - catherine" /></a></p> <p>5&quot; x 7&quot; alumitype. Trying some fotodiox lighting for with collodion portraits<br /> <br /> Shot with:<br /> <br /> -Deardorff 5x7<br /> -Derogy ~ 8&quot; f3.6<br /> <br /> Approx. 35 sec exposure</p> Sun, 09 Dec 2012 22:18:14 -0800 2012-12-09T23:13:11-08:00 nobody@flickr.com (slantface) tag:flickr.com,2004:/photo/8260626794 ambrotype #35 - catherine <p>5&quot; x 7&quot; alumitype. Trying some fotodiox lighting for with collodion portraits<br /> <br /> Shot with:<br /> <br /> -Deardorff 5x7<br /> -Derogy ~ 8&quot; f3.6<br /> <br /> Approx. 35 sec exposure</p> slantface denver ambrotype wetplate 5x7 alternativeprocess collodion deardorff f36 derogy http://www.flickr.com/photos/jordandickinson/8259558693/ <p><a href="http://www.flickr.com/people/jordandickinson/">slantface</a> posted a photo:</p> <p><a href="http://www.flickr.com/photos/jordandickinson/8259558693/" title="ambrotype #34- catherine"><img src="http://farm9.staticflickr.com/8482/8259558693_d6869eca5f_m.jpg" width="240" height="180" alt="ambrotype #34- catherine" /></a></p> <p>4&quot; x 5'&quot; alumitype. Trying some fotodiox lighting for with collodion portraits<br /> <br /> Shot with:<br /> <br /> -Deardorff 5x7<br /> -Derogy ~ 8&quot; f3.6<br /> <br /> Approx. 30 sec exposure</p> Sun, 09 Dec 2012 22:18:14 -0800 2012-12-09T22:54:57-08:00 nobody@flickr.com (slantface) tag:flickr.com,2004:/photo/8259558693 ambrotype #34- catherine <p>4&quot; x 5'&quot; alumitype. Trying some fotodiox lighting for with collodion portraits<br /> <br /> Shot with:<br /> <br /> -Deardorff 5x7<br /> -Derogy ~ 8&quot; f3.6<br /> <br /> Approx. 30 sec exposure</p> slantface http://www.flickr.com/photos/jordandickinson/8243901746/ <p><a href="http://www.flickr.com/people/jordandickinson/">slantface</a> posted a photo:</p> <p><a href="http://www.flickr.com/photos/jordandickinson/8243901746/" title="ambrotype #32 - the peppers"><img src="http://farm9.staticflickr.com/8059/8243901746_71cdf4fec4_m.jpg" width="240" height="173" alt="ambrotype #32 - the peppers" /></a></p> <p>5&quot; x 7&quot; alumitype. Trying some fotodiox lighting for potential upcoming collodion portraits. Figured a still life would be easiest...for now<br /> <br /> Shot with:<br /> <br /> -Deardorff 5x7<br /> -Derogy ~ 8&quot; f3.6<br /> <br /> Approx. 49 sec exposure</p> Mon, 03 Dec 2012 21:53:14 -0800 2012-12-03T22:47:03-08:00 nobody@flickr.com (slantface) tag:flickr.com,2004:/photo/8243901746 ambrotype #32 - the peppers <p>5&quot; x 7&quot; alumitype. Trying some fotodiox lighting for potential upcoming collodion portraits. Figured a still life would be easiest...for now<br /> <br /> Shot with:<br /> <br /> -Deardorff 5x7<br /> -Derogy ~ 8&quot; f3.6<br /> <br /> Approx. 49 sec exposure</p> slantface 8 denver tintype ambrotype wetplate 5x7 alternativeprocess collodion deardorff f36 brasslens deardorff5x7 derogy http://www.flickr.com/photos/jordandickinson/8243901774/ <p><a href="http://www.flickr.com/people/jordandickinson/">slantface</a> posted a photo:</p> <p><a href="http://www.flickr.com/photos/jordandickinson/8243901774/" title="ambrotype #31 - the anjou"><img src="http://farm9.staticflickr.com/8485/8243901774_239669effa_m.jpg" width="240" height="171" alt="ambrotype #31 - the anjou" /></a></p> <p>5&quot; x 7&quot; alumitype. Trying some fotodiox lighting for potential upcoming collodion portraits. Figured a still life would be easiest...for now<br /> <br /> Shot with:<br /> <br /> -Deardorff 5x7<br /> -Derogy ~ 8&quot; f3.6<br /> <br /> Approx. 45 sec exposure</p> Mon, 03 Dec 2012 21:53:13 -0800 2012-12-03T22:39:42-08:00 nobody@flickr.com (slantface) tag:flickr.com,2004:/photo/8243901774 ambrotype #31 - the anjou <p>5&quot; x 7&quot; alumitype. Trying some fotodiox lighting for potential upcoming collodion portraits. Figured a still life would be easiest...for now<br /> <br /> Shot with:<br /> <br /> -Deardorff 5x7<br /> -Derogy ~ 8&quot; f3.6<br /> <br /> Approx. 45 sec exposure</p> slantface 8 denver ambrotype wetplate collodion deardorff f36 brasslens deardorff5x7 derogy http://www.flickr.com/photos/jordandickinson/8243901804/ <p><a href="http://www.flickr.com/people/jordandickinson/">slantface</a> posted a photo:</p> <p><a href="http://www.flickr.com/photos/jordandickinson/8243901804/" title="ambrotype #33 - the bartlett"><img src="http://farm9.staticflickr.com/8201/8243901804_69712105d3_m.jpg" width="240" height="175" alt="ambrotype #33 - the bartlett" /></a></p> <p>5&quot; x 7&quot; alumitype. Trying some fotodiox lighting for potential upcoming collodion portraits. Figured a still life would be easiest...for now<br /> <br /> Shot with:<br /> <br /> -Deardorff 5x7<br /> -Derogy ~ 8&quot; f3.6<br /> <br /> Approx. 50 sec exposure</p> Mon, 03 Dec 2012 21:53:12 -0800 2012-12-03T22:34:45-08:00 nobody@flickr.com (slantface) tag:flickr.com,2004:/photo/8243901804 ambrotype #33 - the bartlett <p>5&quot; x 7&quot; alumitype. Trying some fotodiox lighting for potential upcoming collodion portraits. Figured a still life would be easiest...for now<br /> <br /> Shot with:<br /> <br /> -Deardorff 5x7<br /> -Derogy ~ 8&quot; f3.6<br /> <br /> Approx. 50 sec exposure</p> slantface 8 denver ambrotype wetplate collodion deardorff f36 brasslens deardorff5x7 derogy http://www.flickr.com/photos/jordandickinson/8240254610/ <p><a href="http://www.flickr.com/people/jordandickinson/">slantface</a> posted a photo:</p> <p><a href="http://www.flickr.com/photos/jordandickinson/8240254610/" title="ambrotype #30 - the garlic"><img src="http://farm9.staticflickr.com/8199/8240254610_7bc99567a3_m.jpg" width="240" height="164" alt="ambrotype #30 - the garlic" /></a></p> <p>5&quot; x 7&quot; alumitype. Trying some fotodiox lighting for potential upcoming collodion portraits. Figured a still life would be easiest...for now<br /> <br /> Shot with:<br /> <br /> -Deardorff 5x7<br /> -Derogy ~ 8&quot; f3.6<br /> <br /> Approx. 45 sec exposure</p> Sun, 02 Dec 2012 18:19:36 -0800 2012-12-02T19:15:12-08:00 nobody@flickr.com (slantface) tag:flickr.com,2004:/photo/8240254610 ambrotype #30 - the garlic <p>5&quot; x 7&quot; alumitype. Trying some fotodiox lighting for potential upcoming collodion portraits. Figured a still life would be easiest...for now<br /> <br /> Shot with:<br /> <br /> -Deardorff 5x7<br /> -Derogy ~ 8&quot; f3.6<br /> <br /> Approx. 45 sec exposure</p> slantface 8 denver tintype ambrotype wetplate 5x7 alternativeprocess collodion deardorff f36 alumitype brasslens deardorff5x7 derogy http://www.flickr.com/photos/jordandickinson/8021982858/ <p><a href="http://www.flickr.com/people/jordandickinson/">slantface</a> posted a photo:</p> <p><a href="http://www.flickr.com/photos/jordandickinson/8021982858/" title="ambrotype # 29 - erin"><img src="http://farm9.staticflickr.com/8461/8021982858_b188b6f24b_m.jpg" width="240" height="161" alt="ambrotype # 29 - erin" /></a></p> <p>5&quot; x 7&quot; alumitype. <br /> <br /> Shot with:<br /> <br /> Double exposure<br /> -Deardorff 5x7<br /> -Derogy ~ 8&quot; f3.6<br /> <br /> Approx. 6 sec exposure (left)<br /> Approx. 8 sec exposure (right)</p> Mon, 24 Sep 2012 19:58:05 -0700 2012-09-24T20:36:55-08:00 nobody@flickr.com (slantface) tag:flickr.com,2004:/photo/8021982858 ambrotype # 29 - erin <p>5&quot; x 7&quot; alumitype. <br /> <br /> Shot with:<br /> <br /> Double exposure<br /> -Deardorff 5x7<br /> -Derogy ~ 8&quot; f3.6<br /> <br /> Approx. 6 sec exposure (left)<br /> Approx. 8 sec exposure (right)</p> slantface colorado denver tintype ambrotype wetplate 5x7 collodion deardorff alumitype derogy http://www.flickr.com/photos/jordandickinson/8021982924/ <p><a href="http://www.flickr.com/people/jordandickinson/">slantface</a> posted a photo:</p> <p><a href="http://www.flickr.com/photos/jordandickinson/8021982924/" title="ambrotype #28 - andrew"><img src="http://farm9.staticflickr.com/8032/8021982924_26e49dc528_m.jpg" width="165" height="240" alt="ambrotype #28 - andrew" /></a></p> <p>5&quot; x 7&quot; alumitype. <br /> <br /> Shot with:<br /> <br /> -Deardorff 5x7<br /> -Derogy ~ 8&quot; f3.6<br /> <br /> Approx. 7 sec exposure</p> Mon, 24 Sep 2012 19:58:04 -0700 2012-09-24T20:46:43-08:00 nobody@flickr.com (slantface) tag:flickr.com,2004:/photo/8021982924 ambrotype #28 - andrew <p>5&quot; x 7&quot; alumitype. <br /> <br /> Shot with:<br /> <br /> -Deardorff 5x7<br /> -Derogy ~ 8&quot; f3.6<br /> <br /> Approx. 7 sec exposure</p> slantface colorado denver tintype ambrotype 5x7 collodion deardorff alumitype derogy http://www.flickr.com/photos/jordandickinson/8021982956/ <p><a href="http://www.flickr.com/people/jordandickinson/">slantface</a> posted a photo:</p> <p><a href="http://www.flickr.com/photos/jordandickinson/8021982956/" title="ambrotype #27 - andrew"><img src="http://farm9.staticflickr.com/8172/8021982956_7ca37e208f_m.jpg" width="161" height="240" alt="ambrotype #27 - andrew" /></a></p> Mon, 24 Sep 2012 19:58:03 -0700 2012-09-24T20:10:53-08:00 nobody@flickr.com (slantface) tag:flickr.com,2004:/photo/8021982956 ambrotype #27 - andrew slantface colorado denver tintype ambrotype 5x7 collodion deardorff alumitype derogy http://www.flickr.com/photos/jordandickinson/7993850613/ <p><a href="http://www.flickr.com/people/jordandickinson/">slantface</a> posted a photo:</p> <p><a href="http://www.flickr.com/photos/jordandickinson/7993850613/" title="ambrotype #26 - erin"><img src="http://farm9.staticflickr.com/8298/7993850613_ec738e13db_m.jpg" width="165" height="240" alt="ambrotype #26 - erin" /></a></p> <p>5&quot; x 7&quot; alumitype. <br /> <br /> Shot with:<br /> <br /> -Deardorff 5x7<br /> -Derogy ~ 8&quot; f3.6<br /> <br /> Approx. 7 sec exposure</p> Sun, 16 Sep 2012 16:12:33 -0700 2012-09-16T17:01:08-08:00 nobody@flickr.com (slantface) tag:flickr.com,2004:/photo/7993850613 ambrotype #26 - erin <p>5&quot; x 7&quot; alumitype. <br /> <br /> Shot with:<br /> <br /> -Deardorff 5x7<br /> -Derogy ~ 8&quot; f3.6<br /> <br /> Approx. 7 sec exposure</p> slantface lens colorado denver ambrotype alternative 5x7 collodion deardorff petzval alumitype derogy http://www.flickr.com/photos/jordandickinson/7993857962/ <p><a href="http://www.flickr.com/people/jordandickinson/">slantface</a> posted a photo:</p> <p><a href="http://www.flickr.com/photos/jordandickinson/7993857962/" title="ambrotype #27 - andrew"><img src="http://farm9.staticflickr.com/8305/7993857962_1a0d0fcde4_m.jpg" width="167" height="240" alt="ambrotype #27 - andrew" /></a></p> <p>5&quot; x 7&quot; alumitype. <br /> <br /> Shot with:<br /> <br /> -Deardorff 5x7<br /> -Derogy ~ 8&quot; f3.6<br /> <br /> Approx. 7 sec exposure</p> Sun, 16 Sep 2012 16:12:32 -0700 2012-09-16T17:09:32-08:00 nobody@flickr.com (slantface) tag:flickr.com,2004:/photo/7993857962 ambrotype #27 - andrew <p>5&quot; x 7&quot; alumitype. <br /> <br /> Shot with:<br /> <br /> -Deardorff 5x7<br /> -Derogy ~ 8&quot; f3.6<br /> <br /> Approx. 7 sec exposure</p> slantface lens colorado denver ambrotype alternative 5x7 collodion deardorff petzval alumitype derogy http://www.flickr.com/photos/jordandickinson/7993858014/ <p><a href="http://www.flickr.com/people/jordandickinson/">slantface</a> posted a photo:</p> <p><a href="http://www.flickr.com/photos/jordandickinson/7993858014/" title="ambrotype #28 - andrew"><img src="http://farm9.staticflickr.com/8298/7993858014_9f811ecb94_m.jpg" width="165" height="240" alt="ambrotype #28 - andrew" /></a></p> <p>5&quot; x 7&quot; alumitype. <br /> <br /> Shot with:<br /> <br /> -Deardorff 5x7<br /> -Derogy ~ 8&quot; f3.6<br /> <br /> Approx. 7 sec exposure</p> Sun, 16 Sep 2012 16:12:31 -0700 2012-09-16T16:40:37-08:00 nobody@flickr.com (slantface) tag:flickr.com,2004:/photo/7993858014 ambrotype #28 - andrew <p>5&quot; x 7&quot; alumitype. <br /> <br /> Shot with:<br /> <br /> -Deardorff 5x7<br /> -Derogy ~ 8&quot; f3.6<br /> <br /> Approx. 7 sec exposure</p> slantface lens colorado denver ambrotype alternative 5x7 collodion deardorff petzval alumitype derogy http://www.flickr.com/photos/jordandickinson/7927623060/ <p><a href="http://www.flickr.com/people/jordandickinson/">slantface</a> posted a photo:</p> <p><a href="http://www.flickr.com/photos/jordandickinson/7927623060/" title="ambrotype #24 - catherine"><img src="http://farm9.staticflickr.com/8177/7927623060_9312f66a92_m.jpg" width="162" height="240" alt="ambrotype #24 - catherine" /></a></p> <p>5&quot; x 7&quot; alumitype. <br /> <br /> Shot with:<br /> <br /> -Deardorff 5x7<br /> -Derogy ~ 8&quot; f3.6<br /> <br /> Approx. 7 sec exposure</p> Mon, 03 Sep 2012 21:56:14 -0700 2012-09-03T22:50:50-08:00 nobody@flickr.com (slantface) tag:flickr.com,2004:/photo/7927623060 ambrotype #24 - catherine <p>5&quot; x 7&quot; alumitype. <br /> <br /> Shot with:<br /> <br /> -Deardorff 5x7<br /> -Derogy ~ 8&quot; f3.6<br /> <br /> Approx. 7 sec exposure</p> slantface denver ambrotype wetplate 5x7 collodion deardorff alumitype derogy http://www.flickr.com/photos/jordandickinson/7917959730/ <p><a href="http://www.flickr.com/people/jordandickinson/">slantface</a> posted a photo:</p> <p><a href="http://www.flickr.com/photos/jordandickinson/7917959730/" title="ambrotype #25 - catherine"><img src="http://farm9.staticflickr.com/8170/7917959730_1a673e88a1_m.jpg" width="165" height="240" alt="ambrotype #25 - catherine" /></a></p> <p>5&quot; x 7&quot; alumitype. <br /> <br /> Shot with:<br /> <br /> -Deardorff 5x7<br /> -Derogy ~ 8&quot; f3.6<br /> <br /> Approx. 6 sec exposure</p> Sun, 02 Sep 2012 17:52:10 -0700 2012-09-03T00:50:06-08:00 nobody@flickr.com (slantface) tag:flickr.com,2004:/photo/7917959730 ambrotype #25 - catherine <p>5&quot; x 7&quot; alumitype. <br /> <br /> Shot with:<br /> <br /> -Deardorff 5x7<br /> -Derogy ~ 8&quot; f3.6<br /> <br /> Approx. 6 sec exposure</p> slantface plate denver ambrotype wetplate 5x7 collodion deardorff alumitype derogy http://www.flickr.com/photos/jordandickinson/7800182204/ <p><a href="http://www.flickr.com/people/jordandickinson/">slantface</a> posted a photo:</p> <p><a href="http://www.flickr.com/photos/jordandickinson/7800182204/" title="ambrotype #20 - catherine"><img src="http://farm8.staticflickr.com/7269/7800182204_2d146c38fb_m.jpg" width="235" height="240" alt="ambrotype #20 - catherine" /></a></p> <p>8&quot;x8&quot; black glass ambrotype. <br /> <br /> Shot with:<br /> <br /> -Deardorff 8x10&quot;<br /> -Perken Son and Rayment lens<br /> <br /> A little PS painting, for fun...</p> Thu, 16 Aug 2012 23:34:56 -0700 2012-08-13T20:20:21-08:00 nobody@flickr.com (slantface) tag:flickr.com,2004:/photo/7800182204 ambrotype #20 - catherine <p>8&quot;x8&quot; black glass ambrotype. <br /> <br /> Shot with:<br /> <br /> -Deardorff 8x10&quot;<br /> -Perken Son and Rayment lens<br /> <br /> A little PS painting, for fun...</p> slantface denver ambrotype wetplate collodion deardorff perkensonandrayment http://www.flickr.com/photos/jordandickinson/7646548298/ <p><a href="http://www.flickr.com/people/jordandickinson/">slantface</a> posted a photo:</p> <p><a href="http://www.flickr.com/photos/jordandickinson/7646548298/" title="ambrotype #22 - diego"><img src="http://farm8.staticflickr.com/7131/7646548298_60267ecbfc_m.jpg" width="236" height="240" alt="ambrotype #22 - diego" /></a></p> <p>8&quot;x8&quot; black glass ambrotype. <br /> <br /> Shot with:<br /> <br /> -Deardorff 8x10&quot;<br /> -Perken Son and Rayment lens</p> Wed, 25 Jul 2012 15:33:19 -0700 2012-07-25T15:50:46-08:00 nobody@flickr.com (slantface) tag:flickr.com,2004:/photo/7646548298 ambrotype #22 - diego <p>8&quot;x8&quot; black glass ambrotype. <br /> <br /> Shot with:<br /> <br /> -Deardorff 8x10&quot;<br /> -Perken Son and Rayment lens</p> slantface glass colorado plate denver ambrotype wetplate 8x8 collodion deardorff8x10 perkenssonandrayment http://www.flickr.com/photos/jordandickinson/7646548390/ <p><a href="http://www.flickr.com/people/jordandickinson/">slantface</a> posted a photo:</p> <p><a href="http://www.flickr.com/photos/jordandickinson/7646548390/" title="ambrotype #23 - diego"><img src="http://farm8.staticflickr.com/7273/7646548390_fa4ede6ec6_m.jpg" width="236" height="240" alt="ambrotype #23 - diego" /></a></p> <p>8&quot;x8&quot; clear glass ambrotype. <br /> <br /> Shot with:<br /> <br /> -Deardorff 8x10&quot;<br /> -Perken Son and Rayment lens</p> Wed, 25 Jul 2012 15:33:18 -0700 2012-07-25T16:23:47-08:00 nobody@flickr.com (slantface) tag:flickr.com,2004:/photo/7646548390 ambrotype #23 - diego <p>8&quot;x8&quot; clear glass ambrotype. <br /> <br /> Shot with:<br /> <br /> -Deardorff 8x10&quot;<br /> -Perken Son and Rayment lens</p> slantface http://www.flickr.com/photos/jordandickinson/7628185822/ <p><a href="http://www.flickr.com/people/jordandickinson/">slantface</a> posted a photo:</p> <p><a href="http://www.flickr.com/photos/jordandickinson/7628185822/" title="ambrotype #21 - catherine"><img src="http://farm8.staticflickr.com/7112/7628185822_45e3656a90_m.jpg" width="235" height="240" alt="ambrotype #21 - catherine" /></a></p> <p>8&quot;x8&quot; clear glass ambrotype. <br /> <br /> Shot with:<br /> <br /> -Deardorff 8x10&quot;<br /> -Perken Son and Rayment lens</p> Mon, 23 Jul 2012 00:41:36 -0700 2012-07-23T02:19:07-08:00 nobody@flickr.com (slantface) tag:flickr.com,2004:/photo/7628185822 ambrotype #21 - catherine <p>8&quot;x8&quot; clear glass ambrotype. <br /> <br /> Shot with:<br /> <br /> -Deardorff 8x10&quot;<br /> -Perken Son and Rayment lens</p> slantface colorado denver 8x10 co ambrotype wetplate collodion deardorff wetplatecollodion perkensonandrayment http://www.flickr.com/photos/jordandickinson/7627445678/ <p><a href="http://www.flickr.com/people/jordandickinson/">slantface</a> posted a photo:</p> <p><a href="http://www.flickr.com/photos/jordandickinson/7627445678/" title="ambrotype #20 - catherine"><img src="http://farm9.staticflickr.com/8024/7627445678_75a143fb12_m.jpg" width="235" height="240" alt="ambrotype #20 - catherine" /></a></p> <p>8&quot;x8&quot; black glass ambrotype. <br /> <br /> Shot with:<br /> <br /> -Deardorff 8x10&quot;<br /> -Perken Son and Rayment lens</p> Sun, 22 Jul 2012 21:41:44 -0700 2012-07-22T22:45:35-08:00 nobody@flickr.com (slantface) tag:flickr.com,2004:/photo/7627445678 ambrotype #20 - catherine <p>8&quot;x8&quot; black glass ambrotype. <br /> <br /> Shot with:<br /> <br /> -Deardorff 8x10&quot;<br /> -Perken Son and Rayment lens</p> slantface colorado denver 8x10 co ambrotype wetplate collodion wetplatecollodion deardorff8x10 perkensonandrayment http://www.flickr.com/photos/jordandickinson/7505838528/ <p><a href="http://www.flickr.com/people/jordandickinson/">slantface</a> posted a photo:</p> <p><a href="http://www.flickr.com/photos/jordandickinson/7505838528/" title="ambrotype #19 - sean"><img src="http://farm8.staticflickr.com/7127/7505838528_3803025c1e_m.jpg" width="240" height="240" alt="ambrotype #19 - sean" /></a></p> <p>8&quot;x8&quot; black glass ambrotype. <br /> <br /> Shot with:<br /> <br /> -Century studio camera 8x10&quot;<br /> -Perken Son and Rayment lens</p> Wed, 04 Jul 2012 21:41:59 -0700 2012-07-05T18:15:48-08:00 nobody@flickr.com (slantface) tag:flickr.com,2004:/photo/7505838528 ambrotype #19 - sean <p>8&quot;x8&quot; black glass ambrotype. <br /> <br /> Shot with:<br /> <br /> -Century studio camera 8x10&quot;<br /> -Perken Son and Rayment lens</p> slantface colorado denver co ambrotype alternativeprocess collodion perkensonandrayment