Image print quality

[pi0neer]

so would there be any difference between recording at 4mp on the
camera (2.1mp camera) or enlarging the picture in photoshop?

If I did use the 4mp on the camera and re-sized to 2.1mp would this be
of the same quality as if I had just used the 2.1mp setting in the
first place?



"MDJ" <mark@stroasdfghnge.org.uk> wrote in message news:<55a0550d89110deb28d6a3099116e5d8@free.terane ws.com>...

> I'm surpirsed no-one has told you but I will, hope I'm not too late.
>
> If your camera is a 2.1 MP then record the images at 2.1 MP. The 4MP is just
> the camera resizing the image and no additional information is recorded.
>
> If you have the option, but sure and save to the highest quality jpg and not
> tiff.
>
>
>

[Robert E. Williams]

pi0neer wrote:

> so would there be any difference between recording at 4mp on the
> camera (2.1mp camera) or enlarging the picture in photoshop?

If you are asking if there is any difference between a 4MP image taken with the camera vs a 2MP image taken with
the camera, but enlarged to 4MP in Photoshop, the answer is... YES, there is a significant difference.
If there wasn't any difference, everybody would buy 2MP cameras and enlarge in PS.
The 4MP image from the camera has 4 MP of REAL image information.
The 4 MP image created in PS has only 2 MP of REAL image information from the camera and 2 MP of INTERPOLATED
(intelligent guesswork) image information

> If I did use the 4mp on the camera and re-sized to 2.1mp would this be
> of the same quality as if I had just used the 2.1mp setting in the
> first place?

It would be very close.
If you send a 4 MP image to PS , it will resample the image to 2 MP with its own interpolation algorithm.
A 4 MP camera takes EVERY picture as a 4 MP image.
The Camera can then resample the image to 2 MP using its own interpolation algorithm
Chances are the interpolation algorithms used by the camera and PS are fairly comparable, so the images will be
very similar.
Bob Williams

>
>
> "MDJ" <mark@stroasdfghnge.org.uk> wrote in message news:<55a0550d89110deb28d6a3099116e5d8@free.terane ws.com>...

> > I'm surpirsed no-one has told you but I will, hope I'm not too late.
> >
> > If your camera is a 2.1 MP then record the images at 2.1 MP. The 4MP is just
> > the camera resizing the image and no additional information is recorded.
> >
> > If you have the option, but sure and save to the highest quality jpg and not
> > tiff.
> >
> >
> >

[pi0neer]

Sorry, I think you misunderstood my post. The camera is a Fuji
Finepix F401 - a 2.1MP camera - but has the option to save as
4MP(interpolated I guess!).

I was wondering 2 things -

1. - would there be any difference between using the interpolated 4MP
setting or enlarging via photoshop

2. - if I used the interpolated setting of 4MP then downsized in
photoshop to 2.1MP, would this 2.1MP be the same quality as if I had
taken a 2.1MP picture directly from the camera.

Thanks - I hope this is a bit clearer.

"Robert E. Williams" <mytbob@cox.net> wrote in message news:<3F1310AD.AF7827CB@cox.net>...

>
> If you are asking if there is any difference between a 4MP image taken with the camera vs a 2MP image taken with
> the camera, but enlarged to 4MP in Photoshop, the answer is... YES, there is a significant difference.
> If there wasn't any difference, everybody would buy 2MP cameras and enlarge in PS.
> The 4MP image from the camera has 4 MP of REAL image information.
> The 4 MP image created in PS has only 2 MP of REAL image information from the camera and 2 MP of INTERPOLATED
> (intelligent guesswork) image information
>

> > If I did use the 4mp on the camera and re-sized to 2.1mp would this be
> > of the same quality as if I had just used the 2.1mp setting in the
> > first place?

>
> It would be very close.
> If you send a 4 MP image to PS , it will resample the image to 2 MP with its own interpolation algorithm.
> A 4 MP camera takes EVERY picture as a 4 MP image.
> The Camera can then resample the image to 2 MP using its own interpolation algorithm
> Chances are the interpolation algorithms used by the camera and PS are fairly comparable, so the images will be
> very similar.
> Bob Williams
>
>

> >
> >
> > "MDJ" <mark@stroasdfghnge.org.uk> wrote in message news:<55a0550d89110deb28d6a3099116e5d8@free.terane ws.com>...

> > > I'm surpirsed no-one has told you but I will, hope I'm not too late.
> > >
> > > If your camera is a 2.1 MP then record the images at 2.1 MP. The 4MP is just
> > > the camera resizing the image and no additional information is recorded.
> > >
> > > If you have the option, but sure and save to the highest quality jpg and not
> > > tiff.
> > >
> > >
> > >

[Don Stauffer]

They would be very close. There may be some differences in downsampling
algorithms used in PS and in your camera, but those differences would
result in rather small differences in quality, not readily apparent
ones.

UPsampling, however, is something else. Even a 2:1 upsampling doesn't
result in very good results (I mean 2:1 linearly - a 2:1 in total
pixels, or 1.4 linear, is about the limit that most upsample and sharpen
algorithms can handle.

pi0neer wrote:

>
> so would there be any difference between recording at 4mp on the
> camera (2.1mp camera) or enlarging the picture in photoshop?
>
> If I did use the 4mp on the camera and re-sized to 2.1mp would this be
> of the same quality as if I had just used the 2.1mp setting in the
> first place?
>
> "MDJ" <mark@stroasdfghnge.org.uk> wrote in message news:<55a0550d89110deb28d6a3099116e5d8@free.terane ws.com>...

> > I'm surpirsed no-one has told you but I will, hope I'm not too late.
> >
> > If your camera is a 2.1 MP then record the images at 2.1 MP. The 4MP is just
> > the camera resizing the image and no additional information is recorded.
> >
> > If you have the option, but sure and save to the highest quality jpg and not
> > tiff.
> >
> >
> >

--
Don Stauffer in Minnesota
[email]stauffer@usfamily.net[/email]
webpage- [url]http://www.usfamily.net/web/stauffer[/url]

[Don Stauffer]

While if you ONLY wanted the 2Mp image, this is true. However, can you
really guarantee that you will never need to crop, or have any reason
for wanting the higher res image? Once you take it the moment is gone.
Personally I always use the highest res setting on my camera, since I
feel I never know when I might have a use for a higher resolution image
than what I am planning at moment I make shot.

pi0neer wrote:

>
> so whould it be fair to say on my camera (Fuji Finepix F401) that
> there is no point in using the 4mp setting as you can get exatly the
> same result in photoshop?
>
> Don Stauffer <stauffer@usfamily.net> wrote in message news:<3F140A72.1D368BB5@usfamily.net>...

> > They would be very close. There may be some differences in downsampling
> > algorithms used in PS and in your camera, but those differences would
> > result in rather small differences in quality, not readily apparent
> > ones.
> >
> > UPsampling, however, is something else. Even a 2:1 upsampling doesn't
> > result in very good results (I mean 2:1 linearly - a 2:1 in total
> > pixels, or 1.4 linear, is about the limit that most upsample and sharpen
> > algorithms can handle.
> >
> > pi0neer wrote:

> > >
> > > so would there be any difference between recording at 4mp on the
> > > camera (2.1mp camera) or enlarging the picture in photoshop?
> > >
> > > If I did use the 4mp on the camera and re-sized to 2.1mp would this be
> > > of the same quality as if I had just used the 2.1mp setting in the
> > > first place?
> > >
> > > "MDJ" <mark@stroasdfghnge.org.uk> wrote in message news:<55a0550d89110deb28d6a3099116e5d8@free.terane ws.com>...
> > > > I'm surpirsed no-one has told you but I will, hope I'm not too late.
> > > >
> > > > If your camera is a 2.1 MP then record the images at 2.1 MP. The 4MP is just
> > > > the camera resizing the image and no additional information is recorded.
> > > >
> > > > If you have the option, but sure and save to the highest quality jpg and not
> > > > tiff.
> > > >
> > > >
> > > >

--
Don Stauffer in Minnesota
[email]stauffer@usfamily.net[/email]
webpage- [url]http://www.usfamily.net/web/stauffer[/url]