Can YOU straighten this Photo? I sure can't.

SimplyShane

Pretty much a self-explanatory title.

For some reason, no matter how much I rotate this shot, it will NOT come out straight. Period.
Can you fix it? Could you teach me --how-- if you are able?? I am very sorry that I have failed to do this on my own. I hate pestering you guys, but I always run into all kinds of problems... :-(

Full resolution download links (from Google Docs):

Original File in TIFF Format--
http://docs.google.com/leaf?id=0BxoqleFoOip4NTE2M2YzM2QtZWU4Ny00YTU3LTg0ZmEtNjc3MTIwZmE4ZGQ0&sort=name&layout=list&num=50

My failed attempt to fix it, in TIFF Format--
http://docs.google.com/leaf?id=0BxoqleFoOip4Y2Q0ZDFmMzItMWM0Zi00YTY4LWE2ZWEtODcwZTdkMjMwMGQ0&sort=name&layout=list&num=50

adbsgicom

I couldn't download it (crashed safari). But do you need to use the photoshop lens correction filter to adjust? Can you point to a smaller version that is easily accessible?

pathfinder

How about posting your link for this image on your flickr site?

SimplyShane

adbsgicom wrote: »

I couldn't download it (crashed safari). But do you need to use the photoshop lens correction filter to adjust? Can you point to a smaller version that is easily accessible?

Have any other browser? It works perfectly fine with Google Chrome and I.E.

SimplyShane

pathfinder wrote: »

How about posting your link for this image on your flickr site?

Can't post it on flickr. The image is far too big and I don't want to size it down, as I prefer individuals to work with my original file.

adbsgicom

Okay, pulled it down w/ IE, and used the lens correction distort filter and came up with this. Is this more in line with what you want?



I'll kill the link if you say so. The gallery is hidden so folks won't just see this image otherwise.

Edit:
Like a complete doofus, I didn't write down what the parameters were, but approximately (I think) the first slider for remove distortion was about +8, the Vertical perspective was -15 (or -12) and the angle was 0.66. Basically I played with the two main ones until the walls down the side seemed vertical along with the back wall. THe 0.66 was calculated earlier using the ruler tool to draw a line across the balcony and then went to image->rotate->arbitrary and it tells you that the rotation is 0.66.

SimplyShane

Thank you very much for trying. (I mean that.)

However, this doesn't look right to my eye. Seems a bit too "curved" at the edges and just..."off."

Maybe I could do what you have done but just pull back a bit??

adbsgicom wrote: »

Okay, pulled it down w/ IE, and used the lens correction distort filter and came up with this. Is this more in line with what you want?



I'll kill the link if you say so. The gallery is hidden so folks won't just see this image otherwise.

Edit:
Like a complete doofus, I didn't write down what the parameters were, but approximately (I think) the first slider for remove distortion was about +8, the Vertical perspective was -15 (or -12) and the angle was 0.66. Basically I played with the two main ones until the walls down the side seemed vertical along with the back wall. THe 0.66 was calculated earlier using the ruler tool to draw a line across the balcony and then went to image->rotate->arbitrary and it tells you that the rotation is 0.66.

SimplyShane

Uh, sir...

That's a far shot from straight. I do appreciate the effort, but that may even be more off than the original.

Art Scott wrote: »

How is this?
Image= Image rotate - arbitrary - 2 degrees CCW and then crop

SimplyShane

I will say that this is very close though...

I might be able to live with it. I'm not sure yet... You did better than I, that's for sure. Still, as I said before, it does seem just slightly "off" to me... Can you see what I'm talking about? Or am I just being a bit too extreme with this?

Thank you very much for giving it a go. This shot has been giving me hours of headaches.

adbsgicom wrote: »

Okay, pulled it down w/ IE, and used the lens correction distort filter and came up with this. Is this more in line with what you want?



I'll kill the link if you say so. The gallery is hidden so folks won't just see this image otherwise.

Edit:
Like a complete doofus, I didn't write down what the parameters were, but approximately (I think) the first slider for remove distortion was about +8, the Vertical perspective was -15 (or -12) and the angle was 0.66. Basically I played with the two main ones until the walls down the side seemed vertical along with the back wall. THe 0.66 was calculated earlier using the ruler tool to draw a line across the balcony and then went to image->rotate->arbitrary and it tells you that the rotation is 0.66.

Art Scott

Sorry guess my head was a bit tilted.......

BradfordBenn

I took a look at it. The challenge is that there is some distortion in the image itself. If I rotate the image -0.61 degrees to straighten then lines on the balcony in the middle of the image the vertical lines on the balcony at the far edges of the image will not be truly vertical. I am not an expert with the Photoshop Lens Correction filter but I agree that it will probably address this issue.

colourbox

Photoshop Lens Correction should do it.
If it's tilted, rotate it.
If it's tilted unevenly, do the Horizontal or Vertical angle correction.
If it's distorted, adjust the lens distortion.
That really should do it.
And run with the grid on the whole time so you can check both horizontal and vertical straightness all over the image.

SimplyShane

BradfordBenn wrote: »

I took a look at it. The challenge is that there is some distortion in the image itself. If I rotate the image -0.61 degrees to straighten then lines on the balcony in the middle of the image the vertical lines on the balcony at the far edges of the image will not be truly vertical. I am not an expert with the Photoshop Lens Correction filter but I agree that it will probably address this issue.

That is precisely why this is so hard to work with.

SimplyShane

colourbox wrote: »

Photoshop Lens Correction should do it.
If it's tilted, rotate it.
If it's tilted unevenly, do the Horizontal or Vertical angle correction.
If it's distorted, adjust the lens distortion.
That really should do it.
And run with the grid on the whole time so you can check both horizontal and vertical straightness all over the image.

I've tried this, but I will continue trying. How do I know which angle correction to use? (Horizontal or Vertical).

Just wing it and try both?

adbsgicom

You can get an angle from the ruler tool, but otherwise, it is a certain amount of winging it (at least it is for me).

Sam

Here's my attempt.

Sam

adbsgicom

Nice, Sam. Looks like you did more vertical correction than I did.

colourbox

SimplyShane wrote: »

How do I know which angle correction to use? (Horizontal or Vertical).

If the lines are converging to the top or bottom, that's horizontal tilt, like a tabletop.
If the lines are converging to the left or right, that's vertical rotation, like an open door.

Try changing Horizontal and Vertical with a non-distorted rectangle image and you'll quickly see what each is for.

Qarik

adbsgicom wrote: »

Okay, pulled it down w/ IE, and used the lens correction distort filter and came up with this. Is this more in line with what you want?



I'll kill the link if you say so. The gallery is hidden so folks won't just see this image otherwise.

Edit:
Like a complete doofus, I didn't write down what the parameters were, but approximately (I think) the first slider for remove distortion was about +8, the Vertical perspective was -15 (or -12) and the angle was 0.66. Basically I played with the two main ones until the walls down the side seemed vertical along with the back wall. THe 0.66 was calculated earlier using the ruler tool to draw a line across the balcony and then went to image->rotate->arbitrary and it tells you that the rotation is 0.66.

looks pretty good to me. there is no obvious distortion to my eyes and wall on the side looks vertical and balcony look horizontal. To the OP..this is not an architectual shot for a portfolio right?