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molotov_koktail
11-28-2003, 03:53 PM
why my renders look stretched horizontally, whereas they're ok in camera view?

thanks

v2n
11-29-2003, 01:07 PM
Maybe it's because of the Pixel Ratio setting ?

In render option/Format/Pixel ratio you should have "1"
if you want the same display than in your cam view.

Gatsu
11-29-2003, 02:37 PM
Make sure that the format of the viewport camera and output camera is the same.

Shinova
11-30-2003, 08:34 AM
Make sure both your camera's and your render option's picture ratios are the same.

1.2 is the one for the usual 640x480, 800x600, 1024x768 resolutions.

Then do what the others suggested with the PIXEL ratio. Picture and pixel ratio are two different things, I believe. Make sure both are the same for both the camera and the render options.

ggg
12-01-2003, 01:51 AM
Originally posted by Shinova
Make sure both your camera's and your render option's picture ratios are the same.

1.2 is the one for the usual 640x480, 800x600, 1024x768 resolutions.

Then do what the others suggested with the PIXEL ratio. Picture and pixel ratio are two different things, I believe. Make sure both are the same for both the camera and the render options.
yes it is good form to have camera and render options the same but 1.2 is Not the picture ratio for "the usual 640x480, 800x600, 1024x768 resolutions", it cannot be as these are some standard 4:3 Monitor resolutions. 4:3 = 1.33 and eg. 16:9 =1.78


molotov_koktail don't worry about wether your renders are "stretched" on your computer monitor unless your final output is a computer monitor with square pixle ratio, like for a web page,
as what is important is how it will look in the final viewing medium, ie like for standard broadcast TV in North America, the screen is 4:3 but the standard NTSC format is 720x480(variants on some devices) which is obviously not 4:3 like the standard computer monitor resolutions Shinova listed, so it fits by using a non-square pixel ratio. A image rendered at standard NTSC rez will be "stretched" on a computer monitor, the new Photoshop CS has a new view option to view various formats like this.

If you want proof, do a test, render at stanard NTSC rez in DV format, see its distorted on your computer monitor, then output using a 20$ firewire card thru a camcorder or media converter to a TV and it looks good (and if lots of motion, would look better interlaced at 60(rounded) fields per second).

This is Really important stuff for a 3d artist to know, especially with all the varying formats internationally and new HDTV and other digital formats being implemented. You should be composing your scene knowing your framing and output medium ( as well as with the expected lens angle and framing as that will also greatly effect how you animate and place your subjects). Look up "pixel ratio", "picture ratio" and "televsion formats" on the web, or perhaps someone here has some good educational links on the subject for you. While you're at it, perhaps look up the relative topics of "interlacing" and "progressive scan", there are some serious misconceptions and incorrect info about these in 3d application forums, so don't ask in them and cross check the info on various sites to get it right. Sony has an excellent book on Digital televison it used to make available for its professional customers for free and so did Quantel. I'm sure there are some good commercial books available too, maybe The_Jaco who may be suffering from over-post-exhaustion ; ) knows some.

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