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Correcting Perspective
Jun 12, 2016 20:11:18   #
tmehrkam Loc: Houston,Tx
 
Photo was is a Panama consisting of three photos. It was Stitch using light room CC


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Jun 12, 2016 20:18:07   #
Bob Yankle Loc: Burlington, NC
 
Are you asking how one could correct the perspective, or just showing what you came up with?

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Jun 12, 2016 20:31:19   #
twowindsbear
 
post deleted

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Jun 12, 2016 20:36:20   #
Rongnongno Loc: FL
 
Use barrel correction.

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Jun 12, 2016 21:38:53   #
tmehrkam Loc: Houston,Tx
 
The photo was merged with lightproof photo merge.

I have tried merging and several corrections with Photoshop but Photoshop likes to freeze. All the merges are worse than the one generated in light room. I did not see a barrel correction in the merge dialogs.

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Jun 12, 2016 21:47:47   #
tmehrkam Loc: Houston,Tx
 
I see Spherical and Cylindrical selections in Photo shop

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Jun 12, 2016 22:58:21   #
Erik_H Loc: Denham Springs, Louisiana
 
tmehrkam wrote:
I see Spherical and Cylindrical selections in Photo shop

It also helps to apply lens profile corrections to each image before stitching.
I did this one today from three shots using Cylindrical Projection in LR...


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Jun 13, 2016 07:37:53   #
tmehrkam Loc: Houston,Tx
 
Erik_H wrote:
It also helps to apply lens profile corrections to each image before stitching.
I did this one today from three shots using Cylindrical Projection in LR...


Very nice Did you use Photoshop or LR?

Sorry my post was so disjointed last night. I was fighting system problems. The system was unresponsive with photoshop running in the background. Thank you for the reply

This is the processing sequences tried.

First.
1. Started with high resolution RAW photos and made minor corrections in exposure. Then applied lens corrections.
2. Merged and stitched the photo In LR with using Cylindrical Projection.
3. Exported to JPEG

I tried Spherical, Cylindrical and Perspective in LR. (LR refused to run Perspective) The photo that is posted is the best of those.

I decided to try Photoshop. I launched Photoshop from the LR menu.

/Photo/External Edit/Merge to Panorama in Photoshop I tried Cylindrical, Spherical, Auto modes. After much thrashing and hour long merges for the ones that did not crash I gave up on Photoshop. I never got results 1/2 as acceptable is the LR merges.

I have 8G memory and I am running a W10 upgraded from W7. I had similar results before the W10 upgrade last week. I guess I need to upgrade the memory. 16G is the most this system supports.

The bow and stern are shorter than in real life and the sidewalk is curved. I was too close to the ship and is to be expected. I am toying the photo, trying to find the limits of Photoshop. It is a learning experience. If a memory upgrade does not help then I may have to abandon Photo Shop. I am not impressed at this time. LR has it's problems but Is OK.

The photos were taken using the Tamron 17-50 at 17mm.

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Jun 13, 2016 09:20:41   #
Erik_H Loc: Denham Springs, Louisiana
 
tmehrkam wrote:
Very nice Did you use Photoshop or LR?

Sorry my post was so disjointed last night. I was fighting system problems. The system was unresponsive with photoshop running in the background. Thank you for the reply

This is the processing sequences tried.

First.
1. Started with high resolution RAW photos and made minor corrections in exposure. Then applied lens corrections.
2. Merged and stitched the photo In LR with using Cylindrical Projection.
3. Exported to JPEG

I tried Spherical, Cylindrical and Perspective in LR. (LR refused to run Perspective) The photo that is posted is the best of those.

I decided to try Photoshop. I launched Photoshop from the LR menu.

/Photo/External Edit/Merge to Panorama in Photoshop I tried Cylindrical, Spherical, Auto modes. After much thrashing and hour long merges for the ones that did not crash I gave up on Photoshop. I never got results 1/2 as acceptable is the LR merges.

I have 8G memory and I am running a W10 upgraded from W7. I had similar results before the W10 upgrade last week. I guess I need to upgrade the memory. 16G is the most this system supports.

The bow and stern are shorter than in real life and the sidewalk is curved. I was too close to the ship and is to be expected. I am toying the photo, trying to find the limits of Photoshop. It is a learning experience. If a memory upgrade does not help then I may have to abandon Photo Shop. I am not impressed at this time. LR has it's problems but Is OK.

The photos were taken using the Tamron 17-50 at 17mm.
Very nice Did you use Photoshop or LR? br br Sorr... (show quote)


I used LR. Applied lens correction to each image first then stitched using cylindrical method. I misspoke earlier, it was actually 6 shots, not 3. Taken with a 100mm lens. Number of shots and subject distance I think plays a large role in how the finished pano turns out. Upgrading to 16 GB Ram will definitely help with your PS issues.

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Jun 13, 2016 09:44:42   #
twowindsbear
 
tmehrkam wrote:
Very nice Did you use Photoshop or LR?

Sorry my post was so disjointed last night. I was fighting system problems. The system was unresponsive with photoshop running in the background. Thank you for the reply

This is the processing sequences tried.

First.
1. Started with high resolution RAW photos and made minor corrections in exposure. Then applied lens corrections.
2. Merged and stitched the photo In LR with using Cylindrical Projection.
3. Exported to JPEG

I tried Spherical, Cylindrical and Perspective in LR. (LR refused to run Perspective) The photo that is posted is the best of those.

I decided to try Photoshop. I launched Photoshop from the LR menu.

/Photo/External Edit/Merge to Panorama in Photoshop I tried Cylindrical, Spherical, Auto modes. After much thrashing and hour long merges for the ones that did not crash I gave up on Photoshop. I never got results 1/2 as acceptable is the LR merges.

I have 8G memory and I am running a W10 upgraded from W7. I had similar results before the W10 upgrade last week. I guess I need to upgrade the memory. 16G is the most this system supports.

The bow and stern are shorter than in real life and the sidewalk is curved. I was too close to the ship and is to be expected. I am toying the photo, trying to find the limits of Photoshop. It is a learning experience. If a memory upgrade does not help then I may have to abandon Photo Shop. I am not impressed at this time. LR has it's problems but Is OK.

The photos were taken using the Tamron 17-50 at 17mm.
Very nice Did you use Photoshop or LR? br br Sorr... (show quote)


Here's my WAG on your photo.

You're right, about being too close.

You may be able to adjust the apparent size of the ship in the individual photos and then stitch them together. I've never tried that, so I don't know how well this will work.

If you really want a better shot of USS Texas, visit again - since you're in Houston. Try farther away, with a longer lens, and start more in the middle of the ship, perhaps near the stacks rather than near turret #1, and shoot holding your camera in portrait orientation. This should give you photos with the ship appearing more 'same size' from bow to stern, rather than the 'near to far point of view that you have here, and give you more photos to work with and a higher resolution pano.

Another possibility, is to make photos as you move along the length of the ship, rather than a fixed location & pivoting your camera. I've not tried this method, either - so - again - not sure of the results.

Does she look any better, now? How's the upkeep coming along? It has been more than 30 yrs since I toured her, and she looked pretty rough then.

Thanks for posting & good luck with your pano pix.

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Jun 13, 2016 09:59:55   #
tmehrkam Loc: Houston,Tx
 
Well it is a complicated situation. Maybe 10-15 years ago they put Her into dry dock and replaced the bottom. They refurbished the decks with Teak and painted the whole exterior. She looked pretty good for a while.

Recently there have been problems with leaks. There are structural issues with the Engine Mounts. There is danger of the engines collapsing. Money was set aside to display her in a Dry Dock. They did some studies and found out that a lot of work needs to be done before that.

Right now she is looking pretty rough. The Lower Engine room is off limits. I think they have rebuilt the engine mounts but it is unsafe. The tour area has been limited.

I use to go regularly. 50 Years ago you could tour the entire ship including the bilges. Now a whole lot less.

There is hope that the funds can be raised to do repairs and complete the Dry Berth before she sinks in place.

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Jun 13, 2016 10:18:00   #
Erik_H Loc: Denham Springs, Louisiana
 
twowindsbear wrote:
...Another possibility, is to make photos as you move along the length of the ship, rather than a fixed location & pivoting your camera. I've not tried this method, either - so - again - not sure of the results...

I tried that yesterday, on a much larger scale though. I attempted to shoot the two block long antique district where I live. It didn't work I think, because I used too short of a lens (20mm) and the perspectives were too distorted. I couldn't get back far enough to use a longer lens though.

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Jun 13, 2016 11:21:35   #
Kingmapix Loc: Mesa, Arizona
 
This ship was designed of make sharp left turns: good for racing on a short circular track.

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Jun 13, 2016 11:24:50   #
twowindsbear
 
Kingmapix wrote:
This ship was designed of make sharp left turns: good for racing on a short circular track.


Huh??

What ship? The USS Texas, in the OP's photo?

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Jun 13, 2016 13:10:18   #
tmehrkam Loc: Houston,Tx
 
I think he is making a joke about the distorted perspective. It looks like there is a bend in the middle. Hence the sharp turns. :-}

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