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Understanding render size

From: SolidWorks Rendering with PhotoView 360

Video: Understanding render size

PhotoView can generate images of almost any size and aspect ratio, however, there are some that are better than others. The basic ratio's are the following. 3 by 5, 16 by 9, 4 by 5, or a square image. Now you can render it any size you want, but a lot of times you want to choose a standard size ratio so it fits nicely, and you can cascade images across a layout. And they're all about the same size and aspect ratio, so they format well. We also need to look at the quality of a render. Which can have a signifigant effect on the time it takes to generate that image.

Understanding render size

PhotoView can generate images of almost any size and aspect ratio, however, there are some that are better than others. The basic ratio's are the following. 3 by 5, 16 by 9, 4 by 5, or a square image. Now you can render it any size you want, but a lot of times you want to choose a standard size ratio so it fits nicely, and you can cascade images across a layout. And they're all about the same size and aspect ratio, so they format well. We also need to look at the quality of a render. Which can have a signifigant effect on the time it takes to generate that image.

Let's take a look at a few examples. What I've done here is I've gone into the Options panel in PhotoView. And I'll I've down is kept the images the same size. So I basically ran them all at 1200 by 1200. And I did run the one at 24 by 24. To give a good comparison. And then all I've done is changed the final render quality from good to better, best and then maximum. So let's take a look at the results. And here they are. Okay so the very first image we ran was 1200 by 1200 and it took us 54.8 seconds to actually create that render.

That was on a good quality, next I ran it at better. This time it took three minutes and 41 seconds at the same image sizes, still 1200 by 1200. So the image is no bigger but it took us quite a bit longer to run that image, almost four times the amount of time. If I look again at the next one here, this one took us eight minutes to run, the same size image and then I looked at maximum again and that's just about the exact same time. So, it didn't really increase it very much between best and maximum but still we're talking about an eight minute render time.

So if your running an animation and if you're running at this level it takes eight minutes per frame times 30 frames a second. Times maybe a minute long video. We can really stack up some time. I might take a week to render out a short minute long video. So really take it into account when you're actually setting up a render and putting the size and quality into the render scene. Just do some math and figure out what it's really going to take to actually run that scene. To get a good representation. I've also rendered out one more picture. This image here is rendered at 24 by 2400 pixels and it took us three minutes and four seconds to render this one out.

It's rendered at a good settings, so looking at good over here which it took about a minute. This one takes about three minutes, it's about three times as long to get double the resolution of an image, just want to point those few things out. And you can see if you look at the good image here and you zoom in on it, I'll say we're going to put it at 200%, versus the image over here, you can see you get some different reflections and refractions inside of the image. It's calculating more of those rays bouncing around on the image to get a better quality image. Many times in a design environment, time is of the essence.

In the rendering world, the computer needs to do millions of calculations to generate a render, and that can take a very long time. We can control the time by choosing the size of the render, as well as the quality of the final image. By reducing the quality of the image, we reduce the number of calculations, and therefore, reduce the time it takes to generate that rendered image.

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SolidWorks Rendering with PhotoView 360

31 video lessons · 1898 viewers

Gabriel Corbett
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