bitmap images

[Dave_Saunders@adobeforums.com]

Klaus,

While you are technically correct, the term "bitmap" has become rather looser lately. It is frequently used now to refer to images of any depth.

A pity, but there you go, that's language for you. Just won't keep still for two seconds.

Dave

[Gerald_Singelmann@adobeforums.com]

<OT>I recommend Wittgenstein's Phillosophical Investigations for those long winter evenings that are not too far away now.
In a nutshell it says "The meaning of a word is in its use and not in any definition you assume"
</OT>

[Klaus_Scharfenstein@adobeforums.com]

A pity, but there you go, that's language for you.




Yes, it sure is a pity. People often say »bitmap« just to make sure they are not talking about vector image. I'd prefer »raster image« there.

[Nini Tjäder]

One again - I didn't see it was about LINEART when the original question came. I still do not see it is about lineart. I know different rules rule when it is about lineart.

[Bob Levine]

It's all about Dave's point. It's semantics at this point. Bitmap in
this thread is meant to be true black and white raster art.

Bob

[Peter_Truskier@adobeforums.com]

Agreed. This terminology is a real mess. Note, though, that "Bitmap" is used unambiguously in Photoshop's "Mode" list, and has been as long as I can remember.

Klaus' definition has always been mine also, but I realize that many people use the term "bitmap" to refer to any raster image.

[chris@adsrus.com]

I'm a little confused.
Rose, you said the images PRINT "bitmappy".
I don't believe your view settings have anything to do with how it will print.
If it's just how it looks on screen that you're concerned with, then the display performance would be the thing to look at for sure.
However, I don't see how the display performance setting could effect the way it prints.

Chris

[Klaus_Scharfenstein@adobeforums.com]

I still do not see it is about lineart.




Well, even if it is about line art, what difference does that make? I am not even sure we both mean the same thing when using the term »line art« ... Do you mean some »hollow«, outlined shape like the second one in the added screenshot? If so, why should it be treated different than the filled shape on top? Both are bitmaps, and both should come out razor-sharp edged when printed, shouldn't they?

[Cindy_Johnston@adobeforums.com]

If she started with a 72 dpi image, wouldn't that be what's making it "bitmappy" at 1200 dpi? She could try blurring (gausian?) it while it's a 1200 dpi grayscale before turning it to a bitmap, couldn't she?

Cindy

[Klaus_Scharfenstein@adobeforums.com]

Well, she already stated that her problems where solved by changing the display performance setting to high quality. Then, she wrote, it looked and printed fine ... even printed. That's magic, isn't it?

[terrapindesign@carolina.rr.com]

Unless it's an exceedingly complicated graphic, I would consider doing a redraw in Illustrator and remove any concerns about resolution.

[Cindy_Johnston@adobeforums.com]

Klaus,

Could the magic have been this?:

As for the printed result, make sure you have the Print dialog box option
under "Graphics" set to send "ALL" data, not "Optimized Subsampling."




Screen display wouldn't make it print better would it?

C'mon Rose, what potion did you use?

[Fraser_Edward_Crozier@adobeforums.com]

The word bitmap has been sandwiched together from bit and map, literrally meaning bits that are mapped on a grid to form a shape based on an x and y axis.

The number of bits per pixel determines the colour shade etc, so ALL images are literally bitmaps, not just monochrome images.

The term "raster images" is used as a means of distinguishing bewteen between object based graphics that are infinitely scalable, and those that are locked into a specific resolution grid, as in Photoshop based monochrome or colour bitmap images.

Bit map the words have been in use since the 40's, well before images in Photoshop got dragged into the debate.

Fraser

[Klaus_Scharfenstein@adobeforums.com]

[...] so ALL images are literally bitmaps, not just monochrome images.




Well, no - that beautiful black and white all-vectors image that I just finished with Illustrator is by all means not a bitmap ... ;-)

[Fraser_Edward_Crozier@adobeforums.com]

Klaus

Dont go all boxy on me.

When I am referring to bitmap, I am talking pixel based.

I will spell it out.

P I X E L.

Bitmap images are pixel based.

I remember referring to "object based graphics", which in and of itself sets them aside from pixel based, so yes, you are the winner of a non-bitmap image. Happy now, or do we need to spell this out as well. I now understand Gerald's angst.

Fraser

[Fraser_Edward_Crozier@adobeforums.com]

And another thing, what exactly do you think happens to a vector based object or graphic when it needs to be printed?

Did I hear those secret words - bit map. Yes, it becomes a 2400dpi raster made up of millions of tiny pixels that look solid to the naked eye. Funny thing that.