tag:blogger.com,1999:blog-4912713243046142041.post142032579436792379..comments2024-03-18T21:26:34.716-05:00Comments on TYWKIWDBI ("Tai-Wiki-Widbee"): Why is this image distorted?Minnesotastanhttp://www.blogger.com/profile/01382888179579245181noreply@blogger.comBlogger8125tag:blogger.com,1999:blog-4912713243046142041.post-13014539792170077602017-10-16T13:16:50.006-05:002017-10-16T13:16:50.006-05:00This is just the trees leaning.
Pincushion or barr...This is just the trees leaning.<br />Pincushion or barrel distortion both mostly affects the edges of the picture.<br />If you look at the very middle of the picture, the trees in the reflection still leans. <br />The surface of the water is horizontal and you can see the trees both in the reflection and above are leaning the same direction.Jörgen Anderssonhttps://www.blogger.com/profile/12582879014945296268noreply@blogger.comtag:blogger.com,1999:blog-4912713243046142041.post-85915660420048140922017-10-16T08:25:23.800-05:002017-10-16T08:25:23.800-05:00I'm skeptical the effect is systematic optical...I'm skeptical the effect is systematic optical distortion. This would tend to make the trees curved not just tilted and it should also be progressively increasing towards the corners, not a constant tilt effect. More likely the trees are not straight as claimed.<br /><br />It may well be the trick is in the mind. We are so inclined (pun alert) to use trees as a reference point for vertical that our brains will tend to correct their appearance to us towards the vertical as an absolute reference. It's one reason you get sea sick inside a ship. Your brain's vertical references from sight are overriding the ears. Generally sight is better when it works.charliehttps://www.blogger.com/profile/11911321005558820134noreply@blogger.comtag:blogger.com,1999:blog-4912713243046142041.post-57558127166596224622017-10-15T13:34:28.219-05:002017-10-15T13:34:28.219-05:00Oh dear, I'm sorry for your loss :) Well, you&...Oh dear, I'm sorry for your loss :) Well, you're not to blame for your brain doing a little selective memorying - it does that all the time to prevent you from going crazy, but sometimes it can be astounding how it leads to "seeing" things completely differently from what was really there. (Plus, lens distortion may still be part of the story.)Drabkikkerhttp://drabkikker.wordpress.comnoreply@blogger.comtag:blogger.com,1999:blog-4912713243046142041.post-62058161771154647512017-10-15T12:07:48.676-05:002017-10-15T12:07:48.676-05:00Drab, I'm relying on my memory now, and it'...Drab, I'm relying on my memory now, and it's possible that there was a tilt to the trees that I didn't see. That green was carved out of the woods just a couple years ago to extend the length of the hole, and some mature birches may have "leaned" toward the sunlight. It wasn't apparent to me at the time, but maybe I had too many tears in my eyes from losing my favorite ball in the pond...Minnesotastanhttps://www.blogger.com/profile/01382888179579245181noreply@blogger.comtag:blogger.com,1999:blog-4912713243046142041.post-73722619749876245312017-10-15T12:01:10.277-05:002017-10-15T12:01:10.277-05:00Also (sorry for taking this way too serious, lol),...Also (sorry for taking this <i>way</i> too serious, lol), if this were lens distortion, wouldn't the <a href="https://i.imgur.com/LlcUOzf.png" rel="nofollow">green fence post</a> on the right lean at pretty much exactly the same angle as the surrounding trees?Drabkikkerhttp://drabkikker.wordpress.comnoreply@blogger.comtag:blogger.com,1999:blog-4912713243046142041.post-22177086340670207262017-10-15T11:47:41.250-05:002017-10-15T11:47:41.250-05:00Are you sure the trees were upright, Stan? I found...Are you <i>sure</i> the trees were upright, Stan? I found <a href="https://bloximages.chicago2.vip.townnews.com/walkermn.com/content/tncms/assets/v3/editorial/6/22/622ed828-7c54-11e7-b882-27c1a0ae5fc2/5989e349f13ab.image.jpg" rel="nofollow">this picture</a> on the web (which appears to have the same rock in it as yours), and those trees do look like the grow at a bit of an angle.Drabkikkerhttp://drabkikker.wordpress.comnoreply@blogger.comtag:blogger.com,1999:blog-4912713243046142041.post-19541756458871373122017-10-15T11:24:44.376-05:002017-10-15T11:24:44.376-05:00Not an expert (though optics enthusiast), but judg...Not an expert (though optics enthusiast), but judging by the angle of the trees, wouldn't this rather qualify as <a href="https://www.shaneenishry.com/images/blog/RiftDistortion.png" rel="nofollow">pincushion</a> distortion instead of barrel?<br /> <br />That is, if this is lens distortion at all. Thing is, wouldn't that result in the trees being curved rather than perfectly straight as they appear to be (just at an angle)? Might the SE have some built-in feature that attempts (imperfectly) to <i>counteract</i> lens distortion?<br /><br />Thanks for the app link btw! Imma use that, yo.Drabkikkerhttp://drabkikker.wordpress.comnoreply@blogger.comtag:blogger.com,1999:blog-4912713243046142041.post-69852786848176338552017-10-15T09:47:09.774-05:002017-10-15T09:47:09.774-05:00What you are seeing is the result of "barrel ...What you are seeing is the result of "barrel lens distortion" due to the wide-angle 'fish-eye' type lens in most smartphones. See here:<br /><br />https://www.lifewire.com/what-is-barrel-lens-distortion-493725<br /><br /><br />There are apps such as skwrt that can correct this effect. <br /><br /> https://appadvice.com/appnn/2014/05/say-goodbye-to-lens-distortion-on-your-photos-with-skrwt-for-iosfisheadhttps://www.blogger.com/profile/03401614509456767165noreply@blogger.com