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| Any short cuts for previewing images |
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Sun, 8 Apr 2007 22:06:55 +0100 |
Having used one well known viewer for filing my images, not only did I find
the files becoming much larger than I expected. Also, some of the images
were only showing at 72dpi. .
Continuing from above. Each time I have made changes to images in
Photopaint, I found, that if I wanted to size them, I had to either type in
the measurements. This case, 1"x0.75 for example. However, I still need
to keep the images at 600dpi but at the size already mentioned.
For now. Is there a quicker way in doing this in Photopaint? To see
'where I'm coming from,' I've included an attachment to this effect.
Michael Feldman
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| Re: Any short cuts for previewing images |
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Wed, 11 Apr 2007 11:40:01 -060 |
On Sun, 8 Apr 2007 22:06:55 +0100, "Michael" <workpage@aol.com>
wrote:
>
>Having used one well known viewer for filing my images, not only did I find
>the files becoming much larger than I expected. Also, some of the images
>were only showing at 72dpi. .
>
>Continuing from above. Each time I have made changes to images in
>Photopaint, I found, that if I wanted to size them, I had to either type in
>the measurements. This case, 1"x0.75 for example. However, I still
need
>to keep the images at 600dpi but at the size already mentioned.
>
>For now. Is there a quicker way in doing this in Photopaint? To see
>'where I'm coming from,' I've included an attachment to this effect.
>
>
I'm not quite sure what the question is asking. Your attached image
is meaningless to me and I've no idea why the handles are distant from
the image (something to do with viewer?). The size any image will
appear in a graphic application depends on the information in the
image file and how the application is set up (pixels, inches etc).
If you have created (or resampled) an image to be 1" x .75" @ 600dpi,
that will not change in the image file regardless of what application
you use (unless you change parameters, resample and save). The size
it appears on the screen will depend on the application setup. If you
did not set a dpi in the image when created or resampled, the default
dpi for the application will be applied (but does not change the
file). 72dpi is a common default. I think Irfanview's default is
1dpi.
Just to clarify, the basic building block of a bitmap is a pixel.
Size in inches is just for printing purposes and dpi (which is really
ppi in this instance) is a number that connects the two.
Your image would be 600x450 pixels at the specified parameters. If
it's something else, you can set either the size or dpi without
resampling - not both. Eg, make the pic 1" x .75" and the dpi is
whatever, or make the pic 600dpi and the size is whatever. Fix size
in inches AND dpi and you are resampling the image with loss of
quality because the number of pixels has to change.
As an example if your pic is 800x600 and you want it to be 1" x .75",
if you go to Image/Resample and set dpi to 800, your image will be the
desired size and still 800x600 (if you work in inches, setting the
size 1" x .75" will force dpi to 800). If you set dpi to 600 and
size
to 1" x .75", the image will now be 600x450 pixels.
If you really want to set these exactly, you need to work out the
desired size of the original image in pixels before you start.
I would not resample. Forget about the dpi and the size it appears in
an application, set the pic size you want when you come to print it
and be done. How many times are you printing this pic!!
Starman*
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| Post Reply
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| Re: Any short cuts for previewing images |
 |
Thu, 12 Apr 2007 09:26:42 -060 |
On Thu, 12 Apr 2007 13:25:41 +0100, "Michael"
<workpage@aol.com>
wrote:
>
>Starman
>
>I'm not printing the picture as such. No matter what I resample to, the
>image will still come in at 4.2x3.2." This was shown in the attachment
sent
>to you previously where the picture is 'off the page.'
>
I always work in pixels. Dpi and linear dimensions are a non-issue
for me. Don't know, don't care. I set images to 72 or 96 dpi for my
convenience and ensuring consistent text sizes. It may be that
someone who works in inches or whatever can shed light on this issue.
What application was the screenshot of? The tiny image in the
screenshot, was that the whole image or just part of it? I'm
wondering if the problem is the application setup. Can you post the
image somewhere? It would be very helpful. Mail it?
I'm not sure how you are resampling. If you check the "maintain
original size" in PP and you work in inches dimension, resampling the
image will always maintain the same size in inches. Other than that,
dpi = number of pixels/image dimension in inches
Change one and the others must change, it's a fact! Change dpi AND
dimensions at the same time and you are changing the number of pixels.
>Besides this. If I resampled from say 600 to 300dpi and I wanted hard
>copies, that the quality will be lost in any case. If however there is a
>way to get Photopaint to display the image to a smaller size so that it's
>not off the page, then this should go some way in solving this issue. Then,
>I can experiment further with the resample tools. I.e. Without having to
>mess around resizing as before.
>
This question of quality and dpi has come up a few times lately.
Since the basic building block of a bitmap is a pixel, the base
quality of any bitmap is how many pixels there are. If an image is
only 1000 total pixels, it's going to be crap whatever you do.
If you change the dpi, you are not changing the base quality of the
image. It still has the same number of pixels (unless you actually
resample - a big mistake for the original). Dpi may be a rough guide
to print quality if printed at the native size (dictated by pixels &
dpi). Print at any other size and the printer will resample anyway.
If you have an 800x600 image and you print at 8"x6" or
4"x3", the dpi
set in the image is irrelevant (let's say it's 600dpi). The first
comes out 100dpi (or ppi) and the second is 200dpi. Both are made
from the same number of image pixels.
Starman*
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| Post Reply
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| Re: Any short cuts for previewing images |
 |
Thu, 12 Apr 2007 13:25:41 +010 |
Starman
I'm not printing the picture as such. No matter what I resample to, the
image will still come in at 4.2x3.2." This was shown in the attachment
sent
to you previously where the picture is 'off the page.'
Besides this. If I resampled from say 600 to 300dpi and I wanted hard
copies, that the quality will be lost in any case. If however there is a
way to get Photopaint to display the image to a smaller size so that it's
not off the page, then this should go some way in solving this issue. Then,
I can experiment further with the resample tools. I.e. Without having to
mess around resizing as before.
Michael
"Starman*" <starman@connect.ab.ca> wrote in message
news:t83q13punth7jvenh30mhknja07hso9urg@4ax.com...
>
> On Sun, 8 Apr 2007 22:06:55 +0100, "Michael"
<workpage@aol.com> wrote:
>
>>
>>Having used one well known viewer for filing my images, not only did I
>>find
>>the files becoming much larger than I expected. Also, some of the
images
>>were only showing at 72dpi. .
>>
>>Continuing from above. Each time I have made changes to images in
>>Photopaint, I found, that if I wanted to size them, I had to either type
>>in
>>the measurements. This case, 1"x0.75 for example. However, I
still need
>>to keep the images at 600dpi but at the size already mentioned.
>>
>>For now. Is there a quicker way in doing this in Photopaint? To see
>>'where I'm coming from,' I've included an attachment to this effect.
>>
>>
>
> I'm not quite sure what the question is asking. Your attached image
> is meaningless to me and I've no idea why the handles are distant from
> the image (something to do with viewer?). The size any image will
> appear in a graphic application depends on the information in the
> image file and how the application is set up (pixels, inches etc).
>
> If you have created (or resampled) an image to be 1" x .75" @
600dpi,
> that will not change in the image file regardless of what application
> you use (unless you change parameters, resample and save). The size
> it appears on the screen will depend on the application setup. If you
> did not set a dpi in the image when created or resampled, the default
> dpi for the application will be applied (but does not change the
> file). 72dpi is a common default. I think Irfanview's default is
> 1dpi.
>
> Just to clarify, the basic building block of a bitmap is a pixel.
> Size in inches is just for printing purposes and dpi (which is really
> ppi in this instance) is a number that connects the two.
>
> Your image would be 600x450 pixels at the specified parameters. If
> it's something else, you can set either the size or dpi without
> resampling - not both. Eg, make the pic 1" x .75" and the dpi
is
> whatever, or make the pic 600dpi and the size is whatever. Fix size
> in inches AND dpi and you are resampling the image with loss of
> quality because the number of pixels has to change.
>
> As an example if your pic is 800x600 and you want it to be 1" x
.75",
> if you go to Image/Resample and set dpi to 800, your image will be the
> desired size and still 800x600 (if you work in inches, setting the
> size 1" x .75" will force dpi to 800). If you set dpi to 600 and
size
> to 1" x .75", the image will now be 600x450 pixels.
>
> If you really want to set these exactly, you need to work out the
> desired size of the original image in pixels before you start.
>
> I would not resample. Forget about the dpi and the size it appears in
> an application, set the pic size you want when you come to print it
> and be done. How many times are you printing this pic!!
>
> Starman*
>
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| Post Reply
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| Re: Any short cuts for previewing images |
 |
Thu, 12 Apr 2007 21:45:22 +010 |
I still need
to keep the images at 600dpi but at the size already mentioned.
Simply resample them and tick the box "keep original size".
www.sherlockholmesmuseum.com
"Starman*" <starman@connect.ab.ca> wrote in message
news:1bgs135cs753ibdie5hgemt4qk1g9u6l2k@4ax.com...
>
> On Thu, 12 Apr 2007 13:25:41 +0100, "Michael"
<workpage@aol.com>
> wrote:
>
>>
>>Starman
>>
>>I'm not printing the picture as such. No matter what I resample to, the
>>image will still come in at 4.2x3.2." This was shown in the
attachment sent
>>to you previously where the picture is 'off the page.'
>>
>
> I always work in pixels. Dpi and linear dimensions are a non-issue
> for me. Don't know, don't care. I set images to 72 or 96 dpi for my
> convenience and ensuring consistent text sizes. It may be that
> someone who works in inches or whatever can shed light on this issue.
>
> What application was the screenshot of? The tiny image in the
> screenshot, was that the whole image or just part of it? I'm
> wondering if the problem is the application setup. Can you post the
> image somewhere? It would be very helpful. Mail it?
>
> I'm not sure how you are resampling. If you check the "maintain
> original size" in PP and you work in inches dimension, resampling
the
> image will always maintain the same size in inches. Other than that,
>
> dpi = number of pixels/image dimension in inches
>
> Change one and the others must change, it's a fact! Change dpi AND
> dimensions at the same time and you are changing the number of pixels.
>
>>Besides this. If I resampled from say 600 to 300dpi and I wanted hard
>>copies, that the quality will be lost in any case. If however there is
a
>>way to get Photopaint to display the image to a smaller size so that
it's
>>not off the page, then this should go some way in solving this issue.
Then,
>>I can experiment further with the resample tools. I.e. Without having
to
>>mess around resizing as before.
>>
>
> This question of quality and dpi has come up a few times lately.
> Since the basic building block of a bitmap is a pixel, the base
> quality of any bitmap is how many pixels there are. If an image is
> only 1000 total pixels, it's going to be crap whatever you do.
>
> If you change the dpi, you are not changing the base quality of the
> image. It still has the same number of pixels (unless you actually
> resample - a big mistake for the original). Dpi may be a rough guide
> to print quality if printed at the native size (dictated by pixels &
> dpi). Print at any other size and the printer will resample anyway.
>
> If you have an 800x600 image and you print at 8"x6" or
4"x3", the dpi
> set in the image is irrelevant (let's say it's 600dpi). The first
> comes out 100dpi (or ppi) and the second is 200dpi. Both are made
> from the same number of image pixels.
>
> Starman*
>
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