Scaling in Camera Raw Lens Correction no longer works?

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When using Adobe Camera Raw, in Lens Corrections, the "scale" slider no longer works for me. It will enlarge the photo if I slide it to the right. But sliding it to the left, i.e., to a smaller number, for example, to 75%, will actually enlarge the photo.

It seems to work while I am holding down the slider, but as soon as I let it go, it seems to do something weird. It suddenly enlarges and crops the photo, instead of reducing the photo size.

The scaling slider still works correctly on my older 32-bit Windows 7 PC. But on my current 64-bit, Windows 7 PC, I get this weird effect. Is it just me (or my PC) or does anyone else have this problem?
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marilynR

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Posted 2 years ago

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Steve Sprengel, Champion

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I don't see this problem. I am using PS CC 2015.1.2 and ACR 9.3 on Windows 10 64-bit.

What version of ACR are you using, and is it the plug-in from Bridge or on the way into PS, or is it the layer Filter within PS?

And does it make a difference if the GPU is turned on or off?
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marilynR

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Hi, thanks for taking the time to help.

It turns out that this problem is only happening with a few photos I took recently. I guess I am still learning the features of my camera. Apparently, I had set the camera mode to "video" for those photos.

At any rate, the problem for these few photos occurs with GPU turned on or off. Like you, I am using Photoshop CC 2105 version 1.2, and Camera Raw 9.3.

I guess I can live with a few shots that can't be processed with my 64-bit PC. For some reason, I can process them without any problem on my older 32-bit Windows PC.

Thanks again for taking the time to look into this for me.
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Steve Sprengel, Champion

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Can you upload one of your problem photos to www.dropbox.com and post a public download link, here?

There might be something wrong in how the camera metadata information is being interpreted for those photos and Adobe may have something they need to fix.

Also does your older WIn 32 system have the same versions of PS and ACR on it, or are the versions older? This would help narrow down what versions actually have an issue.

I would expect a new version of LR and/or ACR to be released in the next few weeks as it's been about 3 months since the last one, so it'd be helpful to get any bug info to Adobe sooner rather than later.
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marilynR

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Steve, is there a way to e-mail it directly to Adobe? This photo is from the interior of someone's house, so I would not want to publicly post it.

Also, as for my 32-bit PC, it has version 9.3 of Camera Raw, and 2015.1.1 of Photoshop.
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Steve Sprengel, Champion

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No need to post a private photo, but can't you just take a test shot of something generic (tiled floor, window, blinds, tree limbs, brick wall, etc) with some detail so the scaling amount can be determined, using the same settings as the ones that don't work, now, right?

The assumption is that the camera is putting something in the photo metadata that isn't being interpreted properly. If you can't produce a new shot that has the same problem, maybe it's just something that got corrupted in the photo via something local on your computer, then it probably doesn't need to be worried about.
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marilynR

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Hi Steve, thanks for the suggestion.

Here is a photo on Dropbox:

https://www.dropbox.com/sh/iao7vsrsqm...?

dl=0

In ACR Lens Correction, Manual Mode, when I slide the "scale" slider to the left, it seems to reduce the photo size (as it should), until I let go of the slider. Then it resizes it to normal. If I then move the slider back to the default position of 100%, it ends up being enlarged. You can get it back to normal size, however, by clicking on any of the "Upright" buttons.
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Steve Sprengel, Champion

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Thanks for the sample image. This is not a bug. It is normal, although odd-seeming, behavior.

Turn on the Crop mode using the button at the top of ACR and you'll see what is happening.

It's because Constrain-to-Image is enabled at the same time there is a crop that is almost as large as the image, so when you shrink the image down with the Scale slider (or change things with the Horizontal or Vertical or Distortion sliders) the crop-box goes beyond the edge of the image so you see some checkerboard pattern, at least until you let up on the slider. At that point, if Constrain-to-Image is enabled, the crop-box is shifted and scaled-smaller, itself, to keep it within the image extents. When Crop-mode isn't enabled the apparent size of the image changes because the ACR window is the extent of the cropbox,

The same thing happens if you define a crop-box smaller than the image but large enough that scaling to 50% would make the image smaller than the crop box.

This particular image starts out with a crop-box and constrain-to-image set because it has an in-camera crop to the aspect ratio of HD video even though all the sensor data is still included.

The bottom line is that if you don't want to see the odd behavior, then disable Constrain to Image by enabling Crop mode, right-clicking on the image, and unchecking Constrain to Image in the list of options. If you fiddle with things and want to reset back, then while still in Crop mode right-click on the image and choose Set Original Crop. This is what switching Upright options does, resets all the cropping and distortion parameters to their defaults.

if this doesn't make sense then let me know and I can try to explain further.
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marilynR

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Thanks, Steve. Very cool - it works!

Also, thanks for helping me better understand how the crop tool works.