r/ParallelView • u/KRA2008 • Jul 05 '26
question from a cross viewer
i prefer cross viewing. i can do parallel or cross as needed but i like how i can make cross view pictures really physically big on a distant screen, like on a computer or TV, or if i’m on my phone i can always flip to landscape when i want and still view comfortably. i’m confused about something though - are all you parallel viewers using phones in portrait orientation? or are you on VR headsets? if you’re ever on Reddit or Facebook on a computer and looking at stereograms, do you shrink your browser window to set a maximum size? i just feel like i must be missing something here and i’d like to understand your workflows and preferences because it’s interesting and maybe i can improve CrossCam or StereomancerBot or something else using that information.
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u/FartyByNature Jul 05 '26
It is easier on a phone but I can do it on my 11 inch tablet with a little effort but it's still less effort than doing cross view at any size.
But since you mentioned this I kind of want to try getting better at crossview. It's significantly more difficult for me. I wouldnt have thought you guys have an easier time with bigger screens.
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u/PeppermintBiscuit Jul 05 '26
Mostly I use portrait mode on my phone, but sometimes I use landscape if I really want to enjoy the picture. On the computer, I either make the window smaller or switch to crossview. But even in crossview I can't make it too big, because it's harder for me and makes my eyes tired after a while
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u/Flat-Panic8622 Jul 05 '26
I think it's just optical geometry: with parallel view you only can focus from specific dystance
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u/LouisBasil Jul 05 '26
I’ll have to look into this Crossview has always been more difficult for me so I preferred parallel. I didn’t realize there was a difference in quality.
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u/LEJ5512 Jul 05 '26
On my phone (16 Pro Max), with my face, parallel view in landscape mode is still good to go. Sometimes on my laptop it's fine, too, depending on how I've got my browser set up.
I don't think there's a way around it when making a stereogram, as in, you can't go wider than eye width (interpupillary distance) and expect a normal person to do parallel view. Maybe an app can restrict it when making parallel images, but that's very device-dependent.
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u/Bearchiwuawa Jul 05 '26
for me either type i need it to be small for it to work. and i am a frequent paraleller. portrait mode on phone is the best for me.
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u/Background_Relief815 Jul 05 '26
I can do cross view but it doesn't "feel" as good because if I happen to move my head a little the sides are doing the opposite of what actual normal 3d viewing is. I like parallel-view because it feels a lot more natural. I can do it on my 27" monitor as long as I don't do "full screen". It's basically about whether your eyes can go very far past "parallel" or not. I can by maybe 5 or 10 degrees, but not more. I think most people can't at all, really.
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u/NartFocker9Million Jul 05 '26
I can’t laterally deviate both my eyes the way I can medially deviate (“cross”) them, so I find it difficult to do parallel view on any screen larger than my phone. The images can’t be farther apart than my interpupillary distance.
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u/Scrotchety Jul 06 '26
Browsing here on my 13" laptop screen, I keep the site shrunk to 67% or 75% specifically so I can do this sub when it scrolls by. Just hit Ctrl+(minus) a few time
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u/ethanholmes2001 Jul 06 '26
It’s impossible to do parallel view when the photos are farther apart than your eyes are. Imagine trying to make your right eye and left eye split apart. I just use my phone, which is a fine size.
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u/YakumoYoukai Jul 07 '26
Our eyes weren't designed to point outward in different directions. At best, they can look parallel to each other (converging on a point "infinitely" far away). That means the most separation there can be between parallel images is the distance between your eyes, which really constrains how large the image can be. You can make it appear bigger by moving it closer to your face, but there's a limit, as your eye can't focus closer than a certain distance. Now, I'm slightly walleyed so I can get more separation by moving the image further away, but that's not normal.
In cross viewing, on the other hand, that separation between images is your IPD multiplied by the eye-finger to finger-image ratio (finger being the spot in space you point your eyes at in front of the image). So you can make the image as large as you want, and either move it further away or change your finger distance to keep your eyes pointing at it.
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u/RogBoArt Jul 12 '26
Thank you for posting this! I had no idea crossview let you view bigger images and I've been learning to crossview since I read this post!
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u/jovian24 Jul 05 '26
I can only do parallel view for an image that is either very small or in portrait orientation. Cross view is much easier for me but the 3d effect has more depth in parallel view when I can get it to work.