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Subject: BUM Files and Pro Pack

diegos opened this issue on Feb 11, 2002 ยท 7 posts
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diegos ( ) posted Mon, 11 February 2002 at 9:37 AM ยท edited Thu, 15 August 2024 at 8:11 AM

Hi, Im new at Poser Pro Pack and also at english. I have the following doubt: I have some large BUM files generated by Poser4. In Poser Pro Pack, I can use the jpg version of the bump texture. What version is faster to render? Do I lose quality rendering using the jpg file? Many thanks, Diegos

lalverson ( ) posted Mon, 11 February 2002 at 10:13 AM

yes you can use the jpg, but you would have to load it and then save that model again. As far as i have seen for myself using poser with pro pack, No, i have seen no quality lose.

jaybutton ( ) posted Mon, 11 February 2002 at 12:39 PM

I have beat my head against a wall with this one. As far as I know, the jpeg is faster. The Pro Pack can not use BUM files. Have fun with Poser! Jay


lalverson ( ) posted Mon, 11 February 2002 at 12:57 PM

Pro pack can and does use .BUM files, it just cannot convert >JPG to .BUM

diegos ( ) posted Mon, 11 February 2002 at 2:16 PM

Lalverson & Jaybutton many thnks for your replies. I beleive that JPGs are faster, too. The Pro Pack can use BUM also. Diego

jaybutton ( ) posted Mon, 11 February 2002 at 2:39 PM

Lalverson is right. My mistake. :) Jay


hauksdottir ( ) posted Mon, 11 February 2002 at 9:04 PM

Jpegs are a "lossy" format. You will indeed lose detail if you save to .jpg. It compresses images based upon value (lightness) rather than chroma (color or hue), and is far more suitable for photographs than for artwork. .Tifs and .bums and .pngs are among the many non-lossy formats which keep all the data you see in the image, and more information besides. If you have a work of art that has taken you hours or days to set up, why spoil it by saving the final image in a lossy format? The file size of a .jpg is smaller and thus an image will load faster (recommended for auction sites such as eBay). Many contest holders and stores also require .jpgs, despite the poorer quality of the images, so that viewers can quickly navigate through them. You can always convert from a .tif or .bum to a .jpg (losing data), but you can't convert from a .jpg to a higher quality image and restore the data which isn't there. BTW, when you save an image as a .jpg, most programs will ask what quality you desire, so you can get somewhat better images by picking a higher number. Anyway, even if you submit .jpgs to a gallery or store, you should strongly consider keeping non-lossy images on your own computer if you care about the quality of your work. Carolly

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