adaspin Posted October 30, 2007 Share Posted October 30, 2007 I have a sony DSCR-1. It is a 24 to 120 fixed lens camera. Whenever I take a wide angle shot, ( lets say of a group of buildings ) the building on the extreme left or right side of the frame will appear to be leaning into the frame, rather than standing up at a 90 degree angle. And this distortion also appears in the photo after I take it. There is nothing in the owners manual about this... can anyone help? Link to comment Share on other sites More sharing options...
les Posted October 31, 2007 Share Posted October 31, 2007 This is the result of the sensor plane not being vertical (or the lens axis not being horizontal, if you prefer). Incidentally - your eye sees all object the same way, except that your brain is "compensating). Keep your camera level, and all should be fine. Link to comment Share on other sites More sharing options...
alfaromeo Posted October 31, 2007 Share Posted October 31, 2007 to add to the comment above: if it always appears on the sides of the frame there is not much you can do about it, the lens has great ammount of barrel distortion at wide angle. You can fix it to some extent in Photoshop or DX optix pro. But people usually dont, this is the beauty of the wide angle.<p> Examples of keystoning and barrel distortion: <center> <img src="http://i84.photobucket.com/albums/k28/alfaromeo155/eglise-original.jpg" alt="Photobucket - Video and Image Hosting"><br><br> <img src="http://i84.photobucket.com/albums/k28/alfaromeo155/disto_why1.jpg" alt="Photobucket - Video and Image Hosting"><br><br> </center> Link to comment Share on other sites More sharing options...
dg1 Posted October 31, 2007 Share Posted October 31, 2007 Lest people get the wrong idea, I'd point out that the example of extreme barrel distortion is not from an R1, (at least not my R1 :) ). Link to comment Share on other sites More sharing options...
alfaromeo Posted October 31, 2007 Share Posted October 31, 2007 Andrew, please, post a sample picture Link to comment Share on other sites More sharing options...
adaspin Posted October 31, 2007 Author Share Posted October 31, 2007 Jerry, Here is an example, as you requested. Is this "Keystoning"? If so, how do I avoid it, or correct it in PS? Thanks alot. Link to comment Share on other sites More sharing options...
alfaromeo Posted October 31, 2007 Share Posted October 31, 2007 The picture looks very nice and I would not do anything. <center> <img src="http://i84.photobucket.com/albums/k28/alfaromeo155/sample1.jpg" alt="Photobucket - Video and Image Hosting"><br><br> </center> Hovewer, if you want to try to fix it, <A HREF="http://www.kenrockwell.com/tech/perspective.htm">SEE HERE</A> Link to comment Share on other sites More sharing options...
alfaromeo Posted October 31, 2007 Share Posted October 31, 2007 Yes, it looks like keystoning, and a slight barrel. Here's how to avoid and fix it. http://www.tndtownpaper.com/Volume5/photographing_the_house.htm Link to comment Share on other sites More sharing options...
jcuknz Posted October 31, 2007 Share Posted October 31, 2007 You can correct the result with the perspective tool in the good editing programme I trust you have. Link to comment Share on other sites More sharing options...
alfaromeo Posted October 31, 2007 Share Posted October 31, 2007 but there is always a trade off, you lose some useful image area Link to comment Share on other sites More sharing options...
alfaromeo Posted October 31, 2007 Share Posted October 31, 2007 <center> <img src="http://i84.photobucket.com/albums/k28/alfaromeo155/uploaded-file.jpg" alt="Photobucket - Video and Image Hosting"><br><br> </center> Link to comment Share on other sites More sharing options...
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