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Bryce F.A.Q (Last Updated: 2024 Nov 26 4:28 pm)

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Subject: sizes when it matters...


erosiaart ( ) posted Fri, 20 January 2006 at 9:48 PM · edited Mon, 25 November 2024 at 9:07 PM

have to create a ten feet in height by one and half foot (feet?)image for a friend. curious question..how do i tackle the size when working? I can render to disc..yup.. btu thats' the final output. working size? drac ..when i asked on his site..said to work out the pixel percentage.. did that.. but i still get a long view that i have to use the hand to manipulate to see what's happening down there.can get irritating.. how do i work this out?


aprilgem ( ) posted Fri, 20 January 2006 at 11:10 PM

I could be very wrong (I don't know enough about the Bryce camera), but won't that distort the image/camera/view? When I do something super wide, it's as if I used a very wide angle lens -- that's why I ask. What if you did it as an ordinary portrait size image and concentrated only on the middle area? Then, after you render, you can simply crop out the sides. Would love to know what sort of image that would be to use such an aspect ratio.


erosiaart ( ) posted Fri, 20 January 2006 at 11:26 PM

a placard to hide steel safe doors.. the metal doors squish to reveal glass doors. he needs to hide the squished metal doors during opening hours. ten feet is the height needed. one hand a half feet the width. think he's gonna make it into a backlit flex light box. i haven't gotten down to thinking what i can do... i'm still trying to work out that size detail..so i can have a blank canvas infront and know what sorta space i have to work with! and if it's backlit..then i have to worry about the lighting!


ialora ( ) posted Sat, 21 January 2006 at 12:05 AM

Ummm, I'd think you'd set the document size to 864x130 pixels. What is your monitor resolution and what document settings were you using?

Irene-


Hawkfyr ( ) posted Sat, 21 January 2006 at 1:18 AM

In Document setup "Uncheck Contrain Proportions". Make document resolution: 130 X 867 In render to disk Dislog: Width = 1296 Pixels (18 inches which is 1 and a half feet) Height = 8640 Pixels (120 inches which is 10 feet) Or just type in 18 X 120 in the "Output Size in Inches" section of the Render To Disk Dialog. In othre words...your working document can be a different size than your render output size. I hope I understood you correctly...Is this what you wanted? Hope it helps Tom

“The fact that no one understands you…Doesn’t make you an artist.”


madmax_br5 ( ) posted Sat, 21 January 2006 at 2:19 AM

your final image will need to be 3,600x24,000 pixels to print at 200pixels-per inch, which is adequate for a print this size. I'd recommend doing the 130x867 method, and zooming in to adjust details. You can also make the scene in a normal canvas and use the pan tool and top-down views to make sure verything is where it need to be, then just make a new document with the right size and merge the other scene file. Adjusting the aspect ratio in the original scene will distort everything, that's why you will need to merge. It's true that at that wide of an agle you will see edge distortions. The best way to fix this is to move the camera further back by a foctor of three and then zoom in. It operates on the telephoto principle in that because the camera is further back, the distance between the camera and each area of the scene is more equal than when it was closer. Then just get ready for a long render :)


Erlik ( ) posted Sat, 21 January 2006 at 2:47 AM

First check with printers about the resolution for a print of that size. max, 200 DPI is too much. Rosi might get by with something as low as 25-50 DPI. Or with normal screen resolution of 72 DPI. Big billboards are printed at way low resolution, since they are to be viewed from much further away than a 50x70 cm poster, let's say. I printed such posters at 125-150 dpi and they looked completely satisfying. So you could end with a render that's 900 x 6000 or even 450x3000. That's not so terrible to render.

-- erlik


madmax_br5 ( ) posted Sat, 21 January 2006 at 3:14 AM

Yes, it all depends on what type of environment it will be used in. If people are going to be walking up to it then you'll need about 150PPI. 72PPI is fine from a short distance of ten feet or so, and I would never go less than 30 for really huge far away things like 50-foot billboards. 200PPI will let anyone walk right up to it and see a detailed, professional printing job. It just depends if people are going to be able to :) Haha personally speaking knowing that I'd printed something at less than 200ppi would bug the hell out of me so I'd do it no matter what :) I MIGHT go down to 72ppi for a billboard...MAYBE...lol and just a general info-byte for anyone interested in digital printing: There is a difference between DPI and PPI and it matters to a print shop and it's good to know in general. Pixels per inch is the fineness of the digital image. Things on the internet are 72 pixels per inch. High quality prints are 300 pixels per inch. Having more pixels of course preserves much more detail because there are more units to define shapes and lines. This also means you have to render a lot larger or take bigger photos. DPI, dots per inch, has nothing to do with your digital file, only the printer you are using. Inkjet printers use tiny drops of ink, referred to as dots, that make up the pixels in an image. This is why printers advertise say, 1440x2400 DPI. That means that the printer can put down 1440 dots every inch horizontally, and 2400 dots every inch vertically. At 300 dots per pixel, that's about 5x8 dots per pixel, or 40 square dots per pixel. The more dots per pixel there are, the sharper that pixel will be defined in the print. 40 square dots is a lot considering that each pixel is only 1/300th of an inch big. printing at 300DPI would mean only one dot per pixel, making your pixels round and therefor losing the detail of your image.


erosiaart ( ) posted Sat, 21 January 2006 at 9:14 AM

file_320077.jpg

i hear thee..and yes..I've now tried the aspect ratio that you guys gave. this is what i get. my preview window.. if me working on anything that's long..thought of a poser hand... doesn't give me a general idea of what my image looks like. in other words..if i put anything on the ground plane..i can't see the whole thing in totality..unless i keep rendering to disc. i tried changing the camera view on the preview pane..not working.. oh well..me gonna try out some stuff tonite..see if it works... if anyone can comeup with a solution.. plz..plz.. let me know!


aprilgem ( ) posted Sat, 21 January 2006 at 10:28 AM

madmax, you are a godsend. I never thought to use the zoom as a telephoto lens to get rid of edge distortion for wider aspect ratios. Why the hell didn't I? It's so simple and yet was so elusive. I may go back to a few of my older unfinished work now, thanks to you. :)


madmax_br5 ( ) posted Sat, 21 January 2006 at 1:35 PM

erosiaart, you'll need to make sure the maximum vertical resolution isn;t karger than the bryce window itself. In the document settings sindow, try putting in 700 instead of 867 and ley bryce compute the new horizontal value. See if this fits. What is your screen resolution? 867 pixels high will only work if you have at least 1024 pixels of vertical res, like 1280x1024 or 1600x1050. If you can work horizontally, or have a monitor you can rotate, do that, as you'll have a lot more area to work with on the longer dimension. Also, if you just do a normal bryce render by hitting the button, then stop it when you want, grab the pan tool with the render on-screen and it pans across the render, not within the scene, so you can see the full area. here's a practically perspective-free empty scene: Download Here for bryce 5 this is with the camera FOV at 1 degree and it's very far away and very zoomed in. You can adjust the aspect ratio of the canvas but use the gizmo i've included for manipulating the camera because if you use bryce's controls it will jump around and freak out. I'ce saved the default view in the upper left so if you really mess up just hit the button and it'll bring you back to the center.


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