Sony DSC-585

Tony Cooper wrote:
> My daughter's Sony DSC-585 downloads images at 72 dpi on all settings.
> She normally shoots at 2272 (3:2) setting. We've searched the manual,
> but don't see a way to increase the dpi.

"Dpi" is a meaningless value until you actually put those dots on
something measured in inches, like paper. The "72" value that your
daughter's Sony puts on images has nothing to do with resolution or
sharpness.

> My own camera (Canon A70) downloads at 180 dpi. My images of the same
> scene are much sharper.

Your setup is obviously better. More pixels? Better optics?
Daughter's not shooting at the camera's max resolution? Daughter's
using more JPEG compression?

> Any way to change Daughter's settings?

Probably, but don't expect the dpi setting to have any effect.

Good luck!

Paul Allen
 >> Stay informed about: Sony DSC-585 

On Thu, 29 Dec 2005 18:22:51 -0500, ASAAR <caught RemoveThis @22.com> wrote:

>On Thu, 29 Dec 2005 22:46:27 GMT, Tony Cooper wrote:
>
>> My daughter's Sony DSC-585 downloads images at 72 dpi on all settings.
>> She normally shoots at 2272 (3:2) setting. We've searched the manual,
>> but don't see a way to increase the dpi.
>>
>> My own camera (Canon A70) downloads at 180 dpi. My images of the same
>> scene are much sharper.
>>
>> Any way to change Daughter's settings?
>
> I don't know that you can change that in the camera, but IrfanView
>(freeware) can easily make the dpi changes you want, either
>individually, or in batch mode to quickly change as many files as
>you wish in one step.

> I'd be surprised if it makes much of a
>difference when prints are made.

Yes it does.

> Do the A70's images look sharper
>than the DSC-585 on your computer's monitor? You can change the
>setting to 10 dpi or 500 dpi and the image will look the same.

Yes, but that's on a monitor where really nothing over 72 makes any
difference. It's the prints where the difference is seen.


--


Tony Cooper
Orlando, FL
 >> Stay informed about: Sony DSC-585 

On Fri, 30 Dec 2005 03:33:10 GMT, Tony Cooper wrote:

>> I'd be surprised if it makes much of a
>>difference when prints are made.
>
> Yes it does.

I'm not saying that the prints made images from your camera aren't
sharper than images made from your daughter's camera, which I
think(?) is what you are disagreeing with. Have you actually
changed the Sony's 72 dpi/ppi/whatever to the 180 used by the A70
and seen a dramatic difference in prints? I think that if you could
find a way to have the DSC-585 change the dpi/ppi value it places in
the image EXIF data, you'd see no difference in sharpness.

For what it's worth, my Fuji stores no ppi information in its EXIF
data, only dpi, and the value that it uses for ALL images is just
one (1) dpi. I've never changed this, and it has never caused any
problems when prints are made with either my own printers or when I
use a commercial lab's machine. I imagine that some photo software,
somewhere would assume that this meant that I wanted to make
billboard sized prints but I haven't run into any such software.


>> Do the A70's images look sharper
>> than the DSC-585 on your computer's monitor? You can change the
>> setting to 10 dpi or 500 dpi and the image will look the same.
>
> Yes, but that's on a monitor where really nothing over 72 makes any
> difference. It's the prints where the difference is seen.

"Yes" in answer to my question, to the followup statement, or
both?

I think that you've made some mis-assumptions and are stubbornly
clinging to them because they seem to make sense to you. To me, it
seems that the images made with *your* camera are just sharper than
those made with your daughter's camera. I already gave you some
suggestions as how to take a few more pictures to prove one way or
another what might or might not be causing the problem, but I guess
you're not interested in checking it out and letting us know what
results you get.

If the prints from both were really made using 72 dpi and 180 dpi
by the printer, then yes, you'd easily notice a difference in
sharpness. But even if those values were stored in the image files,
I doubt that the printer used those dpi settings and still don't
think that that is responsible for the results you're seeing. YMMV
 >> Stay informed about: Sony DSC-585 

"Tony Cooper" <tony_cooper213.DeleteThis@earthlink.net> wrote in message
news:adp8r1l9d9fp03mkkk8geaksslkqn602uu@4ax.com...
> My daughter's Sony DSC-585 downloads images at 72 dpi on all settings.
> She normally shoots at 2272 (3:2) setting. We've searched the manual,
> but don't see a way to increase the dpi.
>
> My own camera (Canon A70) downloads at 180 dpi. My images of the same
> scene are much sharper.
>
> Any way to change Daughter's settings?
> --
>
>
> Tony Cooper


Hi.

I must agree with ASAAR.

If your Camera is taking images at 2200 x 1700pxl and your daughter's Camera
is taking its pictures at 2200 x 1700, then they are both using the same
resolution.

The fact that one downloads to the computer at screen resolution, and the
other downloads at 180ppi, will have no effect on image sharpness. The same
number of Pixels is being downloaded from each Camera.

As everyone else has said the Ppi figure has no meaning until the image is
put onto paper. You can very easily resize both images to 300ppi, and at
that resolution they will both have the same physical size in inches, and
still have the same number of Pixels.

It may very well be that, when printed, one image is sharper than the other.
There are a large number of reasons why this could be. More "In Camera"
sharpening, better lens quality, better quality sensor, more accurate AF,
less Jpeg compression, etc, etc.

The one thing which will not have any impact is the downloading resolution.
It has no effect on the actual pixels, it just spreads them out a bit more.
They can easily be packed closer together again, and that will still not
make any difference to the actual pixels, or the image sharpness.

The word "Resolution" is not very acccurate, it would be much better if
everyone used the term "Pixel Density" for the Ppi figure.

Asaar is correct, and you need to do a bit more research.
Have a look at www.scantips.com for info on pixels and ppi.

Roy G
 >> Stay informed about: Sony DSC-585 

"Tesco News" <photy.DeleteThis@iona-guesthouse.co.uk> wrote in message
news:Dr8tf.17100$f7.2423@newsfe3-win.ntli.net...
> "Tony Cooper" <tony_cooper213.DeleteThis@earthlink.net> wrote in message
> news:adp8r1l9d9fp03mkkk8geaksslkqn602uu@4ax.com...
>> My daughter's Sony DSC-585 downloads images at 72 dpi on all settings.
>> She normally shoots at 2272 (3:2) setting. We've searched the manual,
>> but don't see a way to increase the dpi.
>>
>> My own camera (Canon A70) downloads at 180 dpi. My images of the same
>> scene are much sharper.
>>
>> Any way to change Daughter's settings?
>> --
>>
>>
>> Tony Cooper
>
>
> Hi.
>
> I must agree with ASAAR.
>
> If your Camera is taking images at 2200 x 1700pxl and your daughter's
> Camera
> is taking its pictures at 2200 x 1700, then they are both using the same
> resolution.
>
> The fact that one downloads to the computer at screen resolution, ..

FYI .. the 72PPI value is a pre-historical dinosaur .. it was derived from
the old Apple 14" screen at 800x600.
From there on it started to lead its own life ! No modern screen has this
resolution anymore .. beats me why camera manufacturers want to stick to
this BC-monster
 >> Stay informed about: Sony DSC-585 

On Fri, 30 Dec 2005 11:00:51 GMT, "Tesco News"
<photy DeleteThis @iona-guesthouse.co.uk> wrote:

>"Tony Cooper" <tony_cooper213 DeleteThis @earthlink.net> wrote in message
>news:adp8r1l9d9fp03mkkk8geaksslkqn602uu@4ax.com...
>> My daughter's Sony DSC-585 downloads images at 72 dpi on all settings.
>> She normally shoots at 2272 (3:2) setting. We've searched the manual,
>> but don't see a way to increase the dpi.
>>
>> My own camera (Canon A70) downloads at 180 dpi. My images of the same
>> scene are much sharper.
>>
>> Any way to change Daughter's settings?
>> --
>>
>>
>> Tony Cooper
>
>
>Hi.
>
>I must agree with ASAAR.
>
>If your Camera is taking images at 2200 x 1700pxl and your daughter's Camera
>is taking its pictures at 2200 x 1700, then they are both using the same
>resolution.
>
>The fact that one downloads to the computer at screen resolution, and the
>other downloads at 180ppi, will have no effect on image sharpness. The same
>number of Pixels is being downloaded from each Camera.
>
>As everyone else has said the Ppi figure has no meaning until the image is
>put onto paper. You can very easily resize both images to 300ppi, and at
>that resolution they will both have the same physical size in inches, and
>still have the same number of Pixels.
>
>It may very well be that, when printed, one image is sharper than the other.
>There are a large number of reasons why this could be. More "In Camera"
>sharpening, better lens quality, better quality sensor, more accurate AF,
>less Jpeg compression, etc, etc.
>
>The one thing which will not have any impact is the downloading resolution.
>It has no effect on the actual pixels, it just spreads them out a bit more.
>They can easily be packed closer together again, and that will still not
>make any difference to the actual pixels, or the image sharpness.
>
>The word "Resolution" is not very acccurate, it would be much better if
>everyone used the term "Pixel Density" for the Ppi figure.
>
>Asaar is correct, and you need to do a bit more research.
>Have a look at www.scantips.com for info on pixels and ppi.

Look...the question is "Can my camera setting be changed?" What I'm
hoping for is a Sony DSC-585 user that reads this and supplies the
answer. The answer doesn't seem to be in the manual.

I *have* done my homework on resolution, and posted a link on this.

I don't use a card reader because I don't like handling the cards that
much. I know there's disagreement there, but I'm more comfortable not
doing this.

I never re-size images. Instead, I use the crop tool in Adobe
Photoshop 7 and set the crop to 4" x 6" or 6" x 4" at 180 ppi. The
selection made that way is a picture that is better composed and
sharper. If I'm posting the result to the web, I'll "select all" from
the reduced size and change the resolution to 100 ppi and "save as" so
it loads faster on the web. Normally, though, I print the result.

When I do print at 5" x7" or 8" x 10" the same steps above are used.
When I prepare for the web I sometimes use pixel dimensions instead of
inches. For example, 700 px x 400 px gives a nice web size.

I also save in .psd format so an image can be worked on several times
without loss. I may print it in .jpg form, they are saved in .psd.

I know people in newsgroups like to take off on tangents, but please
just look at the actual question. If you can answer it, please do.







--


Tony Cooper
Orlando, FL
 >> Stay informed about: Sony DSC-585 

On Fri, 30 Dec 2005 15:07:29 GMT, Tony Cooper
<tony_cooper213 RemoveThis @earthlink.net> wrote:

>>Asaar is correct, and you need to do a bit more research.
>>Have a look at www.scantips.com for info on pixels and ppi.
>
>Look...the question is "Can my camera setting be changed?" What I'm
>hoping for is a Sony DSC-585 user that reads this and supplies the
>answer. The answer doesn't seem to be in the manual.

What's being said is this: there's no reason to change it, even if
there were a way to (which I seriously doubt).
If the images are being displayed at a different ppi figure, then
change that in the viewer - they all let you zoom in or out very
easilky.
The "dpi" figure given is there only to fill in a space in some
siftware; as you ready the file for printing, it will be changed to
match the parameters you speficy for print size and quality.
So, don't even bother about this, it just isn't important at all.

--
Bill Funk
Replace "g" with "a"
funktionality.blogspot.com
 >> Stay informed about: Sony DSC-585 

"Tony Cooper" <tony_cooper213.DeleteThis@earthlink.net> wrote in message
news:adp8r1l9d9fp03mkkk8geaksslkqn602uu@4ax.com...
> My daughter's Sony DSC-585 downloads images at 72 dpi on all settings.
> She normally shoots at 2272 (3:2) setting. We've searched the manual,
> but don't see a way to increase the dpi.
>
> My own camera (Canon A70) downloads at 180 dpi. My images of the same
> scene are much sharper.
>
Am I missing something here?
Does the mere fact of downloading the file from the camera change the file?
I would have thought that if that is occurring then the best thing to do is
to take out the memory card and insert it into a card reader and then just
transfer the file as a whole. That is what I do and every last bit of
information recorded by the camera when taking the image is transferred
intact and I can do what I like with it.

Gerrit
 >> Stay informed about: Sony DSC-585