Is it just me...Picture correction question [S7]

[robrrtp]

...or does the horizon appear to be bowed up in the middle, almost like a barrel distortion over-correction? I took a few shots earlier in the session that looked normal, so I know it can't be a hardware defect. I then swung around when I noticed a rainbow behind me and got a few shots of that. It was when I swung back around (I have the phone on a tripod) when I noticed it in this shot and about a dozen more.

(Phil probably knows where this location is)

 

[B. Diddy]

Yes, that looks convex. Putting a straight edge up to the screen confirms it. But you said other photos of the same horizon don't have that convexity?

 

[robrrtp]

Here's one from a few minutes earlier.

 

[B. Diddy]

I think there's a very tiny bit of convexity there. You may be right, it could be barrel distortion.

 

[flintlock]

It looked like pincushion distortion. Both barrel and pincushion are more visable at edges of screen, not center.

Some distortion is in most all lenses even good ones on real cameras. Wide angle lenses as on your phone do it more. That's why people take pictures of brick walls. Then they use photoshop to find the lens distortion correction value that fixes it.

Cell phone makers use correction values in the software that renders the jpg file to correct for the single lens they need to correct for.

The sun and possible atmospheric effects may also be a factor. Suggest you try a brick wall and see if you see it there. Samsung knows the aberration of its lens and had probably made software correction.

 

[Mr Rich]

Take many pictures of the same thing move the camera higher and lower then you should have a good one to choose from.

 

[Alanhd]

I use an app called SKRWT to fix perspective issues If I'm editing on my phone, or Lightroom on my laptop.

 

[scupking]

Mine does this too. Was taking test pictures and the top of my tv screen looks like it bends.