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DPChallenge Forums >> Tips, Tricks, and Q&A >> borders
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 06/08/2006 03:02:53 PM · #1
when i add a border to some of my images via the way of enlarging the canvus, it appears to be making 2 sides of the image bigger than the other 2 sides. it only happens when i try to do a small increase (1-3 pixels). is there a problem with what i'm doing or is there a better way?

Andy
 06/08/2006 03:05:31 PM · #2
why don't you try a stroke instead?
 06/08/2006 03:24:06 PM · #3
If your zoomed at 100% sometimes it will look like the borders are uneven.
 06/08/2006 05:13:49 PM · #4
how does a "stroke" work?

06/08/2006 05:32:17 PM · #5
click "perspective" in the "canvas size" menu and fill in the amount of pixels you want to use in width & height. That's the way it works for me :)

Message edited by author 2006-06-08 17:32:38.
 06/08/2006 05:34:28 PM · #6
-SelectAll
-Edit>Stroke: options for thickness, foreground or background color, and opacity.

Note that this will go INSIDE your picture, covering the edges -- sometimes this is good if you have a minor flaw but don't want to crop.

As noted before, if you increase the Canvas by an equal number of pixels on each side but it looks uneven on screen, it is almost certainly a "display artifact" due to an eneven match between the spacing of the pixels in you image and the phosphor dots on your (CRT) monitor screen. Try different zoom magnifications and some of them should look even and others not.

With thicker borders the "1/2 pixel" difference isn't noticable.

Message edited by author 2006-06-08 17:35:09.
 06/08/2006 05:38:20 PM · #7
@ GeneralIE: Why does the stroke never work at the outside, but the option is there? do you know what the use of it is?
 06/08/2006 05:48:47 PM · #8
I think I read somewhere that when you want to do a 1 pixel border, you actually need to add 2 pixels to the canvas size, since it will be divided by 2. You would always have to add an even number of pixels to the dimensions.
 06/08/2006 05:58:29 PM · #9
Originally posted by biteme:
@ GeneralIE: Why does the stroke never work at the outside, but the option is there? do you know what the use of it is?

If you create any kind of selection (rectangular, oval, lasso) which is not at the image edge, you can apply the stroke inside, outside, or centered on the selection.

For an interesting effect try this (in Photoshop):
-SelectAll
-Select > Modify > Border (16 pixels)
-Select > Inverse
-Edit > Stroke: FG color, 100% opacity, 8 pixels, centered
 06/08/2006 06:03:10 PM · #10
Originally posted by biteme:
@ GeneralIE: Why does the stroke never work at the outside, but the option is there? do you know what the use of it is?


Maybe you selected the whole thing. In that case, the outside is not visible. I was able to use outside mostly when drawing frames around triptych type images, where each frame is in its own layer, and the outside worked good.
 06/08/2006 07:05:19 PM · #11
what is FG colour
 06/08/2006 07:15:17 PM · #12
Originally posted by amandak:
I think I read somewhere that when you want to do a 1 pixel border, you actually need to add 2 pixels to the canvas size, since it will be divided by 2. You would always have to add an even number of pixels to the dimensions.

It is most likely that this the root cause of your problem.

Normally you enter TWICE the number of pixels you'd expect in both the "Width:" and "Height:" entries in the "canvas size" dialog box. That is because the amount you enter is divided to BOTH sides of the image. That is also why you rarely add an odd amount, it leaves the sides unbalanced by 1 pixel.
 06/08/2006 08:00:29 PM · #13
Originally posted by halfafinger:
what is FG colour

FG = Foreground; BG = Background
 06/08/2006 09:22:23 PM · #14
Originally posted by GeneralE:
Originally posted by halfafinger:
what is FG colour

FG = Foreground; BG = Background


What is colour? :P

06/08/2006 09:23:46 PM · #15
Originally posted by faidoi:
What is colour? :P

A typographical error in America ...
 06/09/2006 12:52:06 AM · #16
that's how we spell colour in new zealand
 06/09/2006 01:33:37 AM · #17
Originally posted by halfafinger:
that's how we spell colour in new zealand

Yeah, but it's wrong. If everyone in New Zealand jumped off a cliff...

;-)
 06/09/2006 01:35:28 AM · #18
Originally posted by halfafinger:
that's how we spell colour in new zealand


And quite a few other places outside the neighbourhood of the US. ;o)

... and the last letter of the alphabet is pronounced zed.

Message edited by author 2006-06-09 01:37:18.
 06/09/2006 01:39:24 AM · #19
Originally posted by cpanaioti:
Originally posted by halfafinger:
that's how we spell colour in new zealand


And quite a few other places outside the neighbourhood of the US. ;o)

... and the last letter of the alphabet is pronounced zed.


We're just don't like to type extra unneccasary letters. :-P

I'm still trying to get a law passed about silent E.
 06/09/2006 02:03:10 AM · #20
Originally posted by fotomann_forever:
I'm still trying to get a law passed about silent E.

Silent E by Tom Lehrer (1971)
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