I've taken a photo of a display frame, and I need to align it perfectly horizontal in order to not crop off parts of the frame when editing out the background. I know how to move images back and forth with the crop tool, but it's not very precise, and I definitely don't want the frame in the image partly chopped off because I can't get it angled just right.
Assuming you've got a good rectilinear image (i.e., the frame edges are straight), but that it's off a bit because the camera wasn't level, centered in front of the artwork, and/or the focal plane of the camera wasn't perfectly parallel with the plane of the artwork, mabye you want to try using the Perspective Crop tool.
I'll go dig up an example and post an image in a little while.
What a useful tool to have. However, I don't seem to have a perspective crop tool in my menu - just the crop tool itself. I have DW MX, btw.
Right now, I'm having to move the image back and forth, back and forth, and it's not aligning *just so* like I want it to. It's not helping that the crop tool border wants to "snap to" the edge of the image when I need much more granular control.
Okay, I found a tutorial on how to straighten an image to a very fine degree. And it's merely using the measurement tool, which is found under the eyedropper tool (for those of you who may be new to PS).
However, every time I perfectly straighten the image, then use the crop tool the get rid of the excess for that side of the image, as soon as I do the same to the next side of the image, the previous straightening I did isn't saved! I still have the background outside of the image that I need to eliminate.
This is getting really aggravating. I had no idea that straightening an image would be so difficult.
The Perspective Crop Tool is "under" the Crop Tool, in much the same way you have described for the "measurement tool" (properly called the Ruler Tool) is "under" the Eyedropper Tool.
You can control whether and how things snap to edges using the View - Snap configuration. Or you can hold down the Control key to get it to not snap temporarily.
You can, of course, rotate your canvas based on the Ruler Tool measurement, as you have found, but it seems to me just rotating the image within the Crop Tool would be easier and more interactive. A fine grid appears while rotating the image that should allow you to align things visually.
There are no options under the crop tool for perspective tool in my menu. Remember - my DW is MX, so it's older so may not have it. I surely don't see it there when I click and hold on it. It also doesn't have that little arrow by the icon indicating other functions available.
I did fix the snap-to function of the crop tool - thanks! That was really bugging me.
The problem with the measurment/crop tools I'm having now is that after I fix one side of my image, then go to the next one, PS tilts the image and a white background appears behind the image after it's been moved. See attached image. You would think that once I aligned one side the others would also be aligned, especially since it's a picture frame, but they're not. If I have to align all four sides in order to eliminate the outside excess, I'm still unable to do it.
I'm hoping that there's something simple that I need to do to fix this. Ugh.
Remember - my DW is MX, so it's older so may not have it.
The acronyms "DW" and "MX" don't mean anything to me in the context of Photoshop. What are you talking about here? What version of Photoshop are you using?
Older versions of Photoshop have had the Perspective Crop capability for a long time, but prior to Photoshop CS6 it was available via a checkbox in the options area while the Crop Tool was active.
@R_Kelly, okay, that worked! Only when I selected the entire image with the crop tool did the perspective check box appear. They didn't make it easy did they? Anyway, once you know how to do it, it's easy. Getting there is the hard part. Thanks for that video tutorial, Noel. That was sweet.