On Thu, 2013-01-24 at 10:23 +0100, Jos Poortvliet wrote:
Of course the usual applies - should be printable (I don't know much about it but printing on t-shirts has its limitations) and in a SVG or similarly open format.
Two things to consider for t-shirts: 1. T-shirts use screen-printing. Therefore, a high DPI is not required. 100dpi images are sufficient. You should test how an image looks when printed on 100dpi to make sure that all the lines and details you want are effective. 2. Screen-printing charges per color. Therefore, you want to be careful what colors you pick. Prices can really climb once you add more colors. I would not advise more than 2 colors. If you can do it in just one color, that = more t-shirts that can be printed within budget. What I tend to do is use the color management in GIMP to reduce the colors from a multiple-colorful design. GIMP > Colors > Info > Colorcube Analysis: This will tell you how many colors your current image has. You'll be surprised how high it can be. (In the thousands!) GIMP > Image > Mode > Indexed: Will give you the opportunity to specify the amount of colors you want your image to have. To be fair, this option of reducing colors can distort the image completely in a negative way. This is especially true for photographic images. So, design your t-shirt concept with limited colors up front and you'll be in better shape. And about photographic images, that's a high-number color image (even in black/white because of shades) so you have to take that into consideration if you want to use a photographic image as part of your t-shirt design. As an example, I took a photo of myself just now. It showed to have 78,126 colors in it. I then switched it to black/white photo (GIMP > Colors > Desaturate) and the picture went down to 254 colors. Then I indexed it to 4 colors. And that resulted in a distortion. I mention this because earlier, I saw proposed design for a Thessaloniki tower on t-shirt. You'll have problems unless Jos is willing to pay for the full color screen printing. By the way, this same concept also applies to vinyl banner printing which also uses screen printing techniques. Bryen -- To unsubscribe, e-mail: opensuse-artwork+unsubscribe@opensuse.org To contact the owner, e-mail: opensuse-artwork+owner@opensuse.org