I have been doing some fine trimming on web page designs, and wanted to know
 the
exact dimensions of various parts of the page.  I used Printscreen to captur
e
the page, and then opened it as a new file in Photoshop.  I found that if I 
set
the resolution to 10 pixels per centimetre, and wound up the magnification t
o
about 500% I could easily read off the precise location in pixels of any poi
nt
on the page.

Unfortunately when I open a new page in Photoshop the resolution is always s
et
to 72 pixels per inch, and I have to reset it to my desired value every time
. I
did some fossicking, and eventually found 'New Document Preset Resolutions'
under Edit >  Preferences > Units and Rulers.  I set 'Print resolution' to 5
0
pixels per centimetre and 'Screen resolution' to 10.  I thought this would d
o
the trick, but when I open a new file it still comes up with Resolution 72
pixels per inch.

Is there a way of setting this resolution?

James McNangle

"James McNangle" <mcnangle@westnet.com.au> wrote in message
news:7g9ua2d88omjdg669pm545r0re43koc75g@4ax.com...
>I have been doing some fine trimming on web page designs, and wanted to
>know the
> exact dimensions of various parts of the page.

I think you are making the task more difficult than necessary. Go here and
try the desktop ruler. http://www.desktopruler.com/download.htm

"2" <nhoj@droffats.ten> wrote in message
news:12avk09sb4fmf6e@news.supernews.com...
> "James McNangle" <mcnangle@westnet.com.au> wrote in message
> news:7g9ua2d88omjdg669pm545r0re43koc75g@4ax.com... 
>
> I think you are making the task more difficult than necessary. Go here and
> try the desktop ruler. http://www.desktopruler.com/download.htm
>
FWIW "file new" always comes up in the dimensions and size of the image on
the clipboard

and I am not sure what you are trying to do the measuring for, but any
screen set to a different resolution will give you different dimensions in
actual screen inches.
for example the same image and text will look smaller on the screen at
1280x768 than at 800x600

"KatWoman" <JolieXPrincessXKatanaXXX@hotmail.com> wrote:

>FWIW "file new" always comes up in the dimensions and size of the image on
>the clipboard

Yes, I realise that, but the 'Resolution' is an almost meaningless value.  I
ts
only significance is in controlling the size of the image if you print it.  
So
far as the image on the screen is concerned it has no meaning whatsoever, so
 it
is logical that you should be able to set it to whatever you like.  (And in 
any
case I almost always have to reset it to fit the paper when I do print
anything.)

>and I am not sure what you are trying to do the measuring for, but any
>screen set to a different resolution will give you different dimensions in
>actual screen inches.

Certainly the physical size of the image on the screen is determined by the
number of pixels in it, the dimensions in pixels of the screen, and the
dimensions of the screen. The nominal resolution has no effect on the image 
on
the screen.  I just loaded an image with resolution set to 10 pixels per
centimetre, changed it first to one pixel per centimetre, and then to 1000. 
 The
rulers changed madly, but the image did not change at all.

I have been having trouble with web pages which did not quite line up as the
y
should, and have been trying to determine how many pixels padding/borders I 
was
actually getting around my images, as against what I thought I should to be
getting, and similar puzzles.  By calibrating my rulers in centimetres and
setting the resolution to 10 pixels per centimetre, and suitably magnifying 
the
picture, I can immediately read out the exact coordinates in pixels of any p
oint
on the page.

And I still don't know what 'New Document Preset Resolutions' refers to, as 
all
new documents come up at 72 pixels per inch regardless of what I set these
values to.

James McNangle