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#1
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Photoshop question
I've got a photo that needs Photoshopping. I have CS2.
It's a big panorama. The center portion needs contrast enhancement and the two ends don't. I know I need to make some sort of mask layer or layers to allow doing this, but the only ways I can think of are terrible kludges. Is there an elegant way of doing this? Nobody around our office has any idea on how to do it, and RTFM is useless (of course, as I said, I could kludge it with some very very messy masking of layers.) Doug MCDonald |
#2
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Photoshop question
On Wed, 22 Oct 2008 16:52:08 -0500, user wrote:
I've got a photo that needs Photoshopping. I have CS2. It's a big panorama. The center portion needs contrast enhancement and the two ends don't. I know I need to make some sort of mask layer or layers to allow doing this, but the only ways I can think of are terrible kludges. Is there an elegant way of doing this? Nobody around our office has any idea on how to do it, and RTFM is useless (of course, as I said, I could kludge it with some very very messy masking of layers.) Doug MCDonald How about doing the contrast adjustment on the original photos before stitching? It sounds to me like you have one or more of the original photos needing adjustment. |
#3
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Photoshop question
ray wrote:
On Wed, 22 Oct 2008 16:52:08 -0500, user wrote: I've got a photo that needs Photoshopping. I have CS2. It's a big panorama. The center portion needs contrast enhancement and the two ends don't. I know I need to make some sort of mask layer or layers to allow doing this, but the only ways I can think of are terrible kludges. Is there an elegant way of doing this? Nobody around our office has any idea on how to do it, and RTFM is useless (of course, as I said, I could kludge it with some very very messy masking of layers.) Doug MCDonald How about doing the contrast adjustment on the original photos before stitching? It sounds to me like you have one or more of the original photos needing adjustment. Redo the pano so that each frame remains on its own layer. There's a setting in the stitching module that preservers layers. Much easier to adjust a single panel. Then create a mask over it to blend in any rough transitions. -- john mcwilliams |
#4
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Photoshop question
ray wrote:
On Wed, 22 Oct 2008 16:52:08 -0500, user wrote: I've got a photo that needs Photoshopping. I have CS2. It's a big panorama. The center portion needs contrast enhancement and the two ends don't. I know I need to make some sort of mask layer or layers to allow doing this, but the only ways I can think of are terrible kludges. Is there an elegant way of doing this? Nobody around our office has any idea on how to do it, and RTFM is useless (of course, as I said, I could kludge it with some very very messy masking of layers.) Doug MCDonald How about doing the contrast adjustment on the original photos before stitching? It sounds to me like you have one or more of the original photos needing adjustment. No, that would be discontinuous. The originals are properly exposed. The problem arises from the nature of the picture, which is a 180- degree panorama of Yosemite Valley. In the center the sun is directly behind me, so trees and landforms are lit straight-on, hence, no shadows. Whereas at the edges the sun is at 90 degrees or so to the camera, producing heavy shadows. The shadow vs no shadow situation produces the problem. It's easy to correct the overall brightness difference problem. The problem is that that does not fix the contrast difference. Doug |
#5
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Photoshop question
"Doug McDonald" wrote in message
... ray wrote: On Wed, 22 Oct 2008 16:52:08 -0500, user wrote: I've got a photo that needs Photoshopping. I have CS2. It's a big panorama. The center portion needs contrast enhancement and the two ends don't. I know I need to make some sort of mask layer or layers to allow doing this, but the only ways I can think of are terrible kludges. Is there an elegant way of doing this? Nobody around our office has any idea on how to do it, and RTFM is useless (of course, as I said, I could kludge it with some very very messy masking of layers.) Doug MCDonald How about doing the contrast adjustment on the original photos before stitching? It sounds to me like you have one or more of the original photos needing adjustment. No, that would be discontinuous. The originals are properly exposed. The problem arises from the nature of the picture, which is a 180- degree panorama of Yosemite Valley. In the center the sun is directly behind me, so trees and landforms are lit straight-on, hence, no shadows. Whereas at the edges the sun is at 90 degrees or so to the camera, producing heavy shadows. The shadow vs no shadow situation produces the problem. It's easy to correct the overall brightness difference problem. The problem is that that does not fix the contrast difference. Doug Autopano Pro does a pretty good job of blending those sorts of problems from my limited experience. http://www.autopano.net/ -- "Calling Atheism a religion is like calling bald a hair color." Don Hirschberg |
#6
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Photoshop question
Atheist Chaplain wrote:
"Doug McDonald" wrote in message ... ray wrote: On Wed, 22 Oct 2008 16:52:08 -0500, user wrote: I've got a photo that needs Photoshopping. I have CS2. It's a big panorama. The center portion needs contrast enhancement and the two ends don't. I know I need to make some sort of mask layer or layers to allow doing this, but the only ways I can think of are terrible kludges. Is there an elegant way of doing this? Nobody around our office has any idea on how to do it, and RTFM is useless (of course, as I said, I could kludge it with some very very messy masking of layers.) Doug MCDonald How about doing the contrast adjustment on the original photos before stitching? It sounds to me like you have one or more of the original photos needing adjustment. No, that would be discontinuous. The originals are properly exposed. The problem arises from the nature of the picture, Autopano Pro does a pretty good job of blending those sorts of problems from my limited experience. http://www.autopano.net/ That's not the question. The question is: what is the PROPER way to do it in Photoshop CS2, on the full panorama? Doug McDonald |
#7
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Photoshop question
Doug McDonald wrote:
Atheist Chaplain wrote: "Doug McDonald" wrote in message ... ray wrote: On Wed, 22 Oct 2008 16:52:08 -0500, user wrote: I've got a photo that needs Photoshopping. I have CS2. It's a big panorama. The center portion needs contrast enhancement and the two ends don't. I know I need to make some sort of mask layer or layers to allow doing this, but the only ways I can think of are terrible kludges. Is there an elegant way of doing this? Nobody around our office has any idea on how to do it, and RTFM is useless (of course, as I said, I could kludge it with some very very messy masking of layers.) Doug MCDonald How about doing the contrast adjustment on the original photos before stitching? It sounds to me like you have one or more of the original photos needing adjustment. No, that would be discontinuous. The originals are properly exposed. The problem arises from the nature of the picture, Autopano Pro does a pretty good job of blending those sorts of problems from my limited experience. http://www.autopano.net/ That's not the question. The question is: what is the PROPER way to do it in Photoshop CS2, on the full panorama? Doug McDonald Make an adjustment layer, adjust it until the centre is the way you want it, then paint out the ends with a soft brush until it matches up. There are many ways to do it, using channels for instance, masking the higher contrast areas and then inverting the mask and tweaking that. CS3 & CS4 offer a few more options, but hardly worth upgrading for something as simple and apparently rare, as this. Cheers BlackShadow |
#8
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Photoshop question
KF wrote:
On Oct 22, 3:52 pm, wrote: I've got a photo that needs Photoshopping. I have CS2. It's a big panorama. Try this: http://www.cs.ubc.ca/~mbrown/autostitch/autostitch.html That's not the question, which is " how do I increase the contrast in the center of an image without changing it at the edges, using a graduated mask, USING PHOTOSHOP CS2"? The panorama is already produced, and is quite nice. Doug McDonald |
#9
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Photoshop question
Doug McDonald wrote:
KF wrote: On Oct 22, 3:52 pm, wrote: I've got a photo that needs Photoshopping. I have CS2. It's a big panorama. Try this: http://www.cs.ubc.ca/~mbrown/autostitch/autostitch.html That's not the question, which is " how do I increase the contrast in the center of an image without changing it at the edges, using a graduated mask, USING PHOTOSHOP CS2"? A graduated mask might be easiest to fake with a huge soft edged eraser on an adjustment layer, otherwise it's black magic with channels & the gradient tool. Try googling for tutorials with those keywords. Yeah, the help files are almost useless but there are tons of tutorials. The panorama is already produced, and is quite nice. Doug McDonald -- Paul Furman www.edgehill.net www.baynatives.com all google groups messages filtered due to spam |
#10
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Photoshop question
wrote in message ... I've got a photo that needs Photoshopping. I have CS2. It's a big panorama. The center portion needs contrast enhancement and the two ends don't. I know I need to make some sort of mask layer or layers to allow doing this, but the only ways I can think of are terrible kludges. Is there an elegant way of doing this? Nobody around our office has any idea on how to do it, and RTFM is useless (of course, as I said, I could kludge it with some very very messy masking of layers.) Doug MCDonald Create a gradient mask using quick mask mode. 1. Open the image. 2. Select all (CNTRL+A) 3. Enter quickmask mode (quick mask button on tool bar). 4. Use the gradient tool to select a radial gradient. 5. Exit quick mask mode (Click on the quick mask button again). You now have a radial gradient selection centered wherever you centered it. If the selection is inverted, invert the selection. Eric Miller www.dyesscreek.com |
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