Camera wide angle
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Personally I would make a vertical panorama and then eliminate the converging verticals in photoshop.
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Thanks Oli.
This is what i tried but its precise only in "2 point perspective" which is a big compromise. i wonder why the perspectiv outline should be limited to the area of the monitor.
Thanks a lot to all of you
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@maccabist said:
i wonder why the perspectiv outline should be limited to the area of the monitor
That's like asking, "I wonder why the photo is limited to the area the lens covers."
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What do you mean precise? You mean when you line up the images after?
Use a panorama software or photoshop photomerge. Should be really easy. Then just get rid of the convergence.
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SketchUp's perspective views model the behavior of a real camera. I suspect you are not a photographer, since what you desire could not be done with a real camera either except using the perspective tools olishea proposes. SketchUp's "two-point perspective" just points the camera level, which prevents "converging verticals" just as in a real camera. It does nothing to magically make the camera see more than is possible using the lens and distance you choose.
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Can you tilt shift the camera in your render app?
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Thanks to all of you for responding.
its my first post in this wonderfull site.
i'm not a photographer although i'm familiar with general issues. i use sketchup for 5 yrs
and most of all i'm a student of Architecture from israel.
I use Sketchup + Photoshop only. i'm aware i might miss something
in my question and that sketchup mimic a real camera.
However, after all its not a real camera. to oli : "precise" - i ment that by taking photos panoramically in "2 point perspective" mode it will be acurate to "glue" them together in photoshop (photos from 1/3 , 2/3 , 3/3 height of the building). it will not be accurate in "perspective" mode. by tilt+Shift of course.I know in Vray there is option to configure the rendered photo to be wider then it apears on the screen.
bless you
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@maccabist said:
to oli : "precise" - i ment that by taking photos panoramically in "2 point perspective" mode it will be acurate to "glue" them together in photoshop (photos from 1/3 , 2/3 , 3/3 height of the building). it will not be accurate in "perspective" mode. by tilt+Shift of course.
I know in Vray there is option to configure the rendered photo to be wider then it apears on the screen.
bless you
You could export a series of 2D graphics in 2-point perspective by shifting the camera's eye point vertically between "shots". These views could then be pasted together in PhotoShop or an equivalent image editor. However, only surfaces directly facing the camera will be projected consistently from shot to shot, and you will have to do some kind of image warping on other surfaces to get them to match. This is because 2-point perspective has two vanishing points located in the horizontal plane of the camera. Surfaces that don't face directly toward the camera taper into the background toward the vanishing points. As you move the camera upward, the vanishing points move upward along with it, meaning that surfaces that are not square to the camera get different perspective in each shot. And again, this is exactly the same effect as you would get with a real camera.
To address your second question, due to the way it generates images, SketchUp has no mechanism to create an image with different content than the view.
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@maccabist said:
However, after all its not a real camera. to oli : "precise" - i ment that by taking photos panoramically in "2 point perspective" mode it will be acurate to "glue" them together in photoshop (photos from 1/3 , 2/3 , 3/3 height of the building). it will not be accurate in "perspective" mode. by tilt+Shift of course.
-Keep your camera at a fixed position. Set height to around 1500mm. This is close to a tripod.
-Use the "look around" tool to get your first shot at the base of the building
-Using the look around tool again, look up slightly and make another render. Just don't look up too much, make sure the images would overlap.
-Again, using look around, take another render looking up even higher. The renders should overlap slightly. It could take between 3 and 4 renders to get the whole height of the building.-Using a dedicated panorama stitching app (lots of free ones) you can stitch these images together as long as they overlap. You do not need to use parallel projection or 2 point. Photoshop has a built-in Photomerge plugin that automatically joins together perspective images.
After you have done this, free transform the whole image to remove the vertical convergence.
I use this Photoshop Photomerge process for taking simple panoramas like below. I use PTGui Pro for more complex spherical stitching. There are many to choose from and the process is simple when you get used to it. The process is exactly the same for vertical images.
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Thanks again, so much.
Oli i'll try what u suggest. it seems to be what i need.
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Yes, what I was suggesting is.....it doesn't need to be 2 point or parallel to merge....Photoshop recognises where the images overlap and free transforms/skews them to merge into each other automatically.
As panoramas are normally made in a landscape fashion, you may need to rotate your images before processing them. Basically trick photoshop into thinking it's a landscape when it's actually a building. Hope this makes sense.
The above panoramas were made up of around 5-7 single images.
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