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<!--Generated by Squarespace Site Server v5.11.5 (http://www.squarespace.com/) on Thu, 29 Jul 2010 13:11:28 GMT--><feed xmlns="http://www.w3.org/2005/Atom" xmlns:dc="http://purl.org/dc/elements/1.1/"><title>Journal</title><subtitle>Journal</subtitle><id>http://www.chrisguzman.com/journal/</id><link rel="alternate" type="application/xhtml+xml" href="http://www.chrisguzman.com/journal/"/><link rel="self" type="application/atom+xml" href="http://www.chrisguzman.com/journal/atom.xml"/><updated>2010-06-28T16:49:27Z</updated><generator uri="http://www.squarespace.com/" version="Squarespace Site Server v5.11.5 (http://www.squarespace.com/)">Squarespace</generator><entry><title>Partial Lunar Eclipse</title><category term="Eclipse"/><category term="Lunar"/><category term="Misc"/><category term="Moon"/><id>http://www.chrisguzman.com/journal/2010/6/28/partial-lunar-eclipse.html</id><link rel="alternate" type="text/html" href="http://www.chrisguzman.com/journal/2010/6/28/partial-lunar-eclipse.html"/><author><name>Chris Guzman</name></author><published>2010-06-28T16:31:47Z</published><updated>2010-06-28T16:31:47Z</updated><content type="html" xml:lang="en-US"><![CDATA[<p><span class="full-image-block ssNonEditable"><span><span class="thumbnail-image-float-left ssNonEditable"><span><a href="javascript:showFullImage('/display/ShowImage?imageUrl=%2Fstorage%2Fjournal-photos%2FIMG_1619-2.jpg%3F__SQUARESPACE_CACHEVERSION%3D1277742927659',683,1024);"><img src="http://www.chrisguzman.com/storage/thumbnails/3631228-7513362-thumbnail.jpg?__SQUARESPACE_CACHEVERSION=1277742927661" alt="" /></a></span></span></span></span> <span class="thumbnail-image-inline ssNonEditable"><span><a href="javascript:showFullImage('/display/ShowImage?imageUrl=%2Fstorage%2Fjournal-photos%2FIMG_1626-2.jpg%3F__SQUARESPACE_CACHEVERSION%3D1277742986460',683,1024);"><img src="http://www.chrisguzman.com/storage/thumbnails/3631228-7513351-thumbnail.jpg?__SQUARESPACE_CACHEVERSION=1277742986462" alt="" /></a></span></span></p>
<p>I was lucky enough to capture these photos during the brief moment that the sun was rising opposite this partially eclipsed moon (approximately 4:50am).&nbsp; I used a 500mm mirror lens, a 2 second exposure, at 1600 ISO.&nbsp; In post processing I removed some noise (possibly too much), and applied a direct positive effect to enhance contrast and color.</p>]]></content></entry><entry><title>A Local Ad I Created</title><category term="Misc"/><category term="Other Work"/><category term="ad"/><category term="particles"/><category term="video"/><id>http://www.chrisguzman.com/journal/2009/9/20/a-local-ad-i-created.html</id><link rel="alternate" type="text/html" href="http://www.chrisguzman.com/journal/2009/9/20/a-local-ad-i-created.html"/><author><name>Chris Guzman</name></author><published>2009-09-20T17:30:00Z</published><updated>2009-09-20T17:30:00Z</updated><content type="html" xml:lang="en-US"><![CDATA[<p><object width="660" height="371"><param name="allowfullscreen" value="true" /><param name="allowscriptaccess" value="always" /><param name="movie" value="http://vimeo.com/moogaloop.swf?clip_id=6425284&amp;server=vimeo.com&amp;show_title=1&amp;show_byline=1&amp;show_portrait=0&amp;color=00adef&amp;fullscreen=1" /><embed src="http://vimeo.com/moogaloop.swf?clip_id=6425284&amp;server=vimeo.com&amp;show_title=1&amp;show_byline=1&amp;show_portrait=0&amp;color=00adef&amp;fullscreen=1" type="application/x-shockwave-flash" allowfullscreen="true" allowscriptaccess="always" width="660" height="371"></embed></object></p>
<p><a href="http://vimeo.com/6425284">Advance by Touch Ad</a> by <a href="http://vimeo.com/user2227537">Chris Guzman</a><a href="http://vimeo.com"></a>.</p>
<p>&nbsp;This ad will be shown at the 5,100-seat Tim's Toyota Center, during the Arizona Sundogs hockey games.</p>
<p>The rose pedals are from actual roses that I picked, and scanned from my home.&nbsp; The images are applied to simple geometry that is driven by a particle system.&nbsp; The particle system is reacting to gravity, wind, and drag, to produce the animation for this ad.&nbsp; The photos are also applied to simple geometry, and the camera is animated along a spline path.</p>
<p>The lighting for this ad required a far amount of work. I had to make a lot of adjustment between the actual lights in the scene, the background, and adding some self-illumination on the materials used.</p>
<p>&nbsp;</p>]]></content></entry><entry><title>Moonrise</title><category term="Moon"/><category term="night"/><category term="video"/><id>http://www.chrisguzman.com/journal/2009/8/30/moonrise.html</id><link rel="alternate" type="text/html" href="http://www.chrisguzman.com/journal/2009/8/30/moonrise.html"/><author><name>Chris Guzman</name></author><published>2009-08-31T01:35:57Z</published><updated>2009-08-31T01:35:57Z</updated><content type="html" xml:lang="en-US"><![CDATA[<p><object width="660" height="371"><param name="allowfullscreen" value="true" /><param name="allowscriptaccess" value="always" /><param name="movie" value="http://vimeo.com/moogaloop.swf?clip_id=6349920&amp;server=vimeo.com&amp;show_title=1&amp;show_byline=1&amp;show_portrait=0&amp;color=00adef&amp;fullscreen=1" /><embed src="http://vimeo.com/moogaloop.swf?clip_id=6349920&amp;server=vimeo.com&amp;show_title=1&amp;show_byline=1&amp;show_portrait=0&amp;color=00adef&amp;fullscreen=1" type="application/x-shockwave-flash" allowfullscreen="true" allowscriptaccess="always" width="660" height="371"></embed></object></p>
<p><a href="http://vimeo.com/6349920">The Moon</a> from <a href="http://vimeo.com/user2227537">Chris Guzman</a> on <a href="http://vimeo.com">Vimeo</a>.</p>
<p>&nbsp;</p>
<p>I used a <span style="text-decoration: underline;"><a href="http://www.amazon.com/exec/obidos/ASIN/B000NNUHWK/chriguzmphot-20">Phoenix 1000mm f/8 Mirror Lens</a></span> on my <span style="text-decoration: underline;"><a href="http://www.amazon.com/exec/obidos/ASIN/B001G5ZTLS/chriguzmphot-20">Canon EOS 5D Mark II</a></span> to capture this video of the lovely full moon on a cloudless night.&nbsp; I increased the playback speed of this video, so the moon is moving across the sky at 1,246% it's actual speed.</p>
<p>The video quality of this camera continues to impress me.&nbsp; It produces results like this even with a relatively low quality lens.</p>
<p>&nbsp;</p>]]></content></entry><entry><title>Creating a large panoramic photo</title><category term="Getty center"/><category term="Panorama"/><category term="Tutorials"/><category term="panorama"/><category term="panoramic"/><category term="tutorial"/><id>http://www.chrisguzman.com/journal/2009/6/18/creating-a-large-panoramic-photo.html</id><link rel="alternate" type="text/html" href="http://www.chrisguzman.com/journal/2009/6/18/creating-a-large-panoramic-photo.html"/><author><name>Chris Guzman</name></author><published>2009-06-19T01:45:00Z</published><updated>2009-06-19T01:45:00Z</updated><content type="html" xml:lang="en-US"><![CDATA[<p>&nbsp;Make sure you click on the full screen button at the top right of the viewer to see the full effect of this panorama.</p>
<p><script type="text/javascript" src="http://widgets.clearspring.com/o/49ba8181fdb85afc/4a8370281d0ce9dd/49ba8181fdb85afc/12e4d85/-cpid/903d2c2dac47aad0/widget.js"></script></p>
<p>&nbsp;Here is a panoramic photo that I created of the great view of LA from the Getty center.</p>
<p>Creating a panoramic photo like this is not as difficult as you may think.&nbsp; It is basically a two step process, with several sub-steps.</p>
<p>First I shot a series of photos hand held, and rotated the camera after each shot.&nbsp; If you have one with you, a tripod will make this step easier.&nbsp; I didn't precisely rotate a set amount of degrees, but I did make sure that I overlapped landmarks from one photo to the next.&nbsp; If a building was in the right of the frame in my first shot, I kept that same building in the left side of the frame when I rotated my view to my right.</p>
<p>The second part of the process is done by using stitching software that can piece the series of photos together.&nbsp; I recommend Hugin, it does a great job, and it's free: <a href="http://hugin.sourceforge.net/">http://hugin.sourceforge.net</a></p>
<p>After downloading, installing, and running Hugin, you will see the "Assistant" tab.</p>
<p><span class="full-image-block ssNonEditable"><span><img src="http://www.chrisguzman.com/storage/journal-photos/Hugin_01.png?__SQUARESPACE_CACHEVERSION=1250131954840" alt="" /></span></span></p>
<p>Click on the "<em>1. Load images...</em>" button to select your series of photos.&nbsp; Then click "<em>2. Align...</em>".&nbsp; After Hugin is finished aligning your photos you will see a preview of your panorama.&nbsp; You can now click back onto the main Hugin window.&nbsp; Now you may want to set the file output type before clicking on the  "<em>3. Create panorama...</em>".&nbsp; To set the file output type click on the "Stitcher" tab, and the file output type is on the bottom under "File formats", "Normal Output:".&nbsp; You can then click back onto the Assistant tab, "<em>3. Create panorama...</em>", and typing a name for the panorama file.</p>
<p>Note: Setting the white balance on your camera to something other then Automatic White Balance may improve the end result.&nbsp; For this particular panoramic photo I used AWB, and set "Low dynamic range, variable white balance" in the Exposure tab of Hugin.</p>
<p>&nbsp;</p>]]></content></entry><entry><title>Prime vs Zoom Lens Comparison</title><category term="Lenses"/><category term="Misc"/><category term="Tests"/><id>http://www.chrisguzman.com/journal/2009/5/24/prime-vs-zoom-lens-comparison.html</id><link rel="alternate" type="text/html" href="http://www.chrisguzman.com/journal/2009/5/24/prime-vs-zoom-lens-comparison.html"/><author><name>Chris Guzman</name></author><published>2009-05-24T16:34:52Z</published><updated>2009-05-24T16:34:52Z</updated><content type="html" xml:lang="en-US"><![CDATA[<p>I wanted to compare my EF24-70mm f/2.8L zoom lens against my EF50 mm f/1.4 prime lens.&nbsp; I shot several photos at 50mm, 1/2000, f/2.8, and&nbsp;ISO 100 with both lenses.</p>
<p>Prime lenses are often considered to be sharper then zoom lenses. But here I am comparing a consumer level prime lens with one of the best professional zoom lens made.</p>
<p><span class="full-image-inline ssNonEditable"><span><img src="http://www.chrisguzman.com/storage/journal-photos/50mm_preview.jpg?__SQUARESPACE_CACHEVERSION=1243183410170" alt="" /></span></span><span class="full-image-inline ssNonEditable"><span><img src="http://www.chrisguzman.com/storage/journal-photos/24-70mm_preview.jpg?__SQUARESPACE_CACHEVERSION=1243183205190" alt="" /></span></span></p>
<p><span class="full-image-inline ssNonEditable"><span>From these two small previews very little difference can be seen between the prime lens, and the second photo that was taken with the zoom lens.</span></span></p>
<p>The sky in the EF24-70mm f/2.8L photo was a little more blue.&nbsp; Perhaps due to the larger optics, or the UV filter was removing more haze.&nbsp; I'm not sure.</p>
<p>&nbsp;</p>
<p><span class="full-image-inline ssNonEditable"><span><img src="http://www.chrisguzman.com/storage/journal-photos/Comparison2.gif?__SQUARESPACE_CACHEVERSION=1243183586304" alt="" /></span></span></p>
<p>Towards the center of the lens the EF50 mm f/1.4 was as sharp as the EF24-70mm f/2.8L, but farther away the sharpness, and clarity of the EF50 mm f/1.4 decreased. &nbsp;As you can see from this<span class="full-image-inline ssNonEditable"><span> 100% crop comparison of the same bush near the bottom right of the frame.</span></span>&nbsp;</p>
<p>&nbsp;There was also a small amount of chromatic abrasion visible in the EF50 mm f/1.4 photo near the edges of the frame, and none was visible with the EF24-70mm f/2.8L.</p>
<p>I did this test to illustrate that the broad statement that prime lenses are "better" then zooms is incorrect.&nbsp; There are several factors that could make one lens a better choice then another, and image quality is only one of them, price, weight, speed (minimum f-stop) , and durability are a few others.</p>]]></content></entry><entry><title>Macro Photos of flowers</title><category term="Macro"/><category term="Misc"/><category term="flowers"/><id>http://www.chrisguzman.com/journal/2009/5/6/macro-photos-of-flowers.html</id><link rel="alternate" type="text/html" href="http://www.chrisguzman.com/journal/2009/5/6/macro-photos-of-flowers.html"/><author><name>Chris Guzman</name></author><published>2009-05-06T01:00:40Z</published><updated>2009-05-06T01:00:40Z</updated><content type="html" xml:lang="en-US"><![CDATA[<p>&nbsp;<script type="text/javascript" src="http://widgets.clearspring.com/o/49ba8181fdb85afc/4a00e200a9a18bf5/49ba8181fdb85afc/1cf19cbf/-cpid/3f6dfee656b273ef/widget.js"></script></p>
<p><script type="text/javascript" src="http://widgets.clearspring.com/o/49ba8181fdb85afc/4a00e24b2053e6fb/49ba8181fdb85afc/46e8c8d1/-cpid/503ab016110c4242/widget.js"></script></p>
<p>&nbsp;</p>
<p>Here are two photos of flowers that I shot with my new macro lens.&nbsp; It's the new <a href="http://www.amazon.com/gp/product/B001GCUC6S/chriguzmphot-20">LensBaby Composer</a> with the <a href="http://www.amazon.com/Lensbabies-AMACK-Lensbaby-Macro-Kit/dp/B000GAOFGO/chriguzmphot-20">Macro Lens Kit</a>.</p>
<p>Macro photography opens up a whole new world to the camera.&nbsp; I'm going to shoot more photos like these when I get the time.</p>
<p><img id="kosa-target-image" style="position: absolute; visibility: hidden; z-index: 2147483647; left: 99px; top: 179px;" src="data:image/png;base64,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" alt="" /></p>]]></content></entry><entry><title>A Conceptual Visualization of Taking a Photograph</title><category term="Tips"/><category term="conceptual"/><category term="photography"/><id>http://www.chrisguzman.com/journal/2009/4/30/a-conceptual-visualization-of-taking-a-photograph.html</id><link rel="alternate" type="text/html" href="http://www.chrisguzman.com/journal/2009/4/30/a-conceptual-visualization-of-taking-a-photograph.html"/><author><name>Chris Guzman</name></author><published>2009-04-30T19:07:33Z</published><updated>2009-04-30T19:07:33Z</updated><summary type="html" xml:lang="en-US"><![CDATA[I wrote this to help explain the processes involved when a camera captures a photograph, and how the F-stop and shutter speed relate to one another.  Hopefully someone will find this useful.]]></summary></entry><entry><title>A cool little image viewer</title><category term="ClosR"/><category term="Misc"/><category term="test"/><id>http://www.chrisguzman.com/journal/2009/4/25/a-cool-little-image-viewer.html</id><link rel="alternate" type="text/html" href="http://www.chrisguzman.com/journal/2009/4/25/a-cool-little-image-viewer.html"/><author><name>Chris Guzman</name></author><published>2009-04-25T01:34:05Z</published><updated>2009-04-25T01:34:05Z</updated><content type="html" xml:lang="en-US"><![CDATA[<p><script type="text/javascript" src="http://widgets.clearspring.com/o/49ba8181fdb85afc/49f361c499624114/49ba8181fdb85afc/7e63a163/-cpid/4a30793d33deff0/widget.js"></script></p>
<p>If all you see is black you may need to click the second icon on the top right to reset it.&nbsp; This is just a quick test photo shot at 21MP with my Canon 5D MII.</p>
<p>ClosR is a neat little Flash based image viewer that lets you zoom into the image&nbsp;all the way down to&nbsp;it's full resolution.</p>
<p>It's not as sharp as the actual image due to it being compressed, and scaled.&nbsp; But I like the functionality of it, especially the full screen mode.</p>]]></content></entry><entry><title>The Art of Silhouette</title><category term="Misc"/><category term="Silhouette"/><category term="article"/><category term="deviantART.com"/><id>http://www.chrisguzman.com/journal/2008/12/5/the-art-of-silhouette.html</id><link rel="alternate" type="text/html" href="http://www.chrisguzman.com/journal/2008/12/5/the-art-of-silhouette.html"/><author><name>Chris Guzman</name></author><published>2008-12-05T19:28:00Z</published><updated>2008-12-05T19:28:00Z</updated><content type="html" xml:lang="en-US"><![CDATA[<p><span class="full-image-block ssNonEditable"><span><img src="http://www.chrisguzman.com/storage/journal-photos/CGPhoto_backlit_001.jpg?__SQUARESPACE_CACHEVERSION=1239756254735" alt="" /></span></span></p>
<p>Today one of my photos was featured in a news article on <a href="http://news.deviantart.com/article/48417">deviantART.com</a>, it's at the bottom of the article.<br />It's really great to see it there, and among so many other great art/photos.</p>]]></content></entry><entry><title>A great view at the Point Montara Lighthouse</title><category term="Lighthouse"/><category term="San Francisco"/><category term="Weddings"/><id>http://www.chrisguzman.com/journal/2008/8/17/a-great-view-at-the-point-montara-lighthouse.html</id><link rel="alternate" type="text/html" href="http://www.chrisguzman.com/journal/2008/8/17/a-great-view-at-the-point-montara-lighthouse.html"/><author><name>Chris Guzman</name></author><published>2008-08-17T01:49:00Z</published><updated>2008-08-17T01:49:00Z</updated><content type="html" xml:lang="en-US"><![CDATA[<p>Today I flew into San Francisco to soot at the Point Montara Lighthouse.</p>
<p><span class="full-image-inline ssNonEditable"><span><img src="http://www.chrisguzman.com/storage/journal-photos/CGPhoto_EA_02.jpg?__SQUARESPACE_CACHEVERSION=1239747626646" alt="" /></span></span></p>
<p><span class="full-image-block ssNonEditable"><span><img src="http://www.chrisguzman.com/storage/journal-photos/CGPhoto_EA_04.jpg?__SQUARESPACE_CACHEVERSION=1239748386732" alt="" /></span></span></p>]]></content></entry></feed>