2 replies to this topic

[N4Z.]

Hey, Im not new to Photoshop, but I am fairly new to logos, the only thing I am struggling with is saving logos as vector and 300DPI.

Can anyone give me some pointers?

Much appreciated.

[Dance]

Vector and 300 dpi? Its either or soldier, unless you want to convert images between the formats...

300 dpi indicates that the logo or image of the logo is saved in a raster or pixels with a actual resolution of 300 pixels/dots per inch. As you prob know a computer monitor cannot display more pixels then the monitor physically contains at a time, however when you print your picture on paper if your "dots per inch/dpi" resolution isn't high enough then the picture is going to look pixeled. 300 dpi is a common standard for print as its the number required for fine print such as you see in magazines, which further means that you will get a good image on paper at about the size you see it on your monitor. However if you choose to save your logo as any kind of raster based format you will be stuck at the size you made the logo in unless you crank up the dpi to huge numbers. But huge number dpi means equally huge file size and handling/loading times when working with it.

Now if you make your logo as a vector image then the image is physically made up of mathematical algorithms, coordinates, equationally defined curves, 2d objects and colors/gradients, stored in different nodes of data. Because everything is made by math the resolution of the image isn't a issue, everything can just be multiplied or divided bigger and smaller. Edges will always remain crisp no matter how you scale the image meaning it can be scaled to fit anything or and dpi, and the file size wont change either. Unless you are utilizing the vector image for the web there really inst a need to convert it out of its vector into a raster/bitmap image format (jpeg, gif, png, targa etc) as you can place vectors seamlessly into print setup programs such as InDesign or QuarkExpress for print. Logos SHOULD be created and saved as vectors.

Converting from Vector to bitmap is easy, using PS, just make a document with the desired dpi and size and then place the vector image onto the canvas (ai, eps etc) and save it in the desired raster format.

Doing it the other way around and converting from raster to vector is a whole different story though, you would most likely need to rework all the shapes and features of the logo from scratch using vector based tools in a vector based application such as "adobe illustrator" or "Corel draw" as the information of the raster cannot be accurately translated into a layered and work friendly vector image.

I have a distinct feeling iv said all this before though...

Edited by Dance, 06 July 2007 - 09:32 PM.

[Scythar]

its all in your mind Dance;
its not real...

stay of that soylent green allready.