File Size

[Guest]

Archived from groups: alt.comp.periphs.dcameras (More info?)

My cousin has a Olympus D580 . This camera is relatively an inexpensive 4
megapixel camera. I notice that when the camera is set at the highest
resolution (2304 x 1728), downloading the jpeg file the size is approx. 2mb.
On the otherhand, my Kodak DX6490 camera is set at highest resolution (2304
x 1728), downloading the jpeg file the size is approx. 1/2mb. Does anyone
know why theres a difference ? Will it not print as well ?

 

[Guest]

Archived from groups: alt.comp.periphs.dcameras (More info?)

What they said... and bear in mind file size is *also* dependant on the
image content, when you are talking about compressed files (eg JPGs).

Images with large amounts of detail, or with large amounts of grain,
will not compress as much as those without.

 

[Guest]

Archived from groups: alt.comp.periphs.dcameras (More info?)

The D580, like most Olympus cameras, offers two settings, SHQ and HQ, that
are at the same resolution. That is not to say that they are the same
quality. The settings differ in the amount of compression of the JPEQ file.
Theoretically, less compression should give a better image. However, with
my two Olympus cameras, I have never seen any noticeable difference between
the two settings printing up to 8 X10 inches. Therefore I generally use the
HQ setting. It is better to compress more, rather than use a lower
resolution.

Kodak, unfortunately, does not offer any choice in their compression. The
highest quality setting on the DX6490, I believe, compresses the file even
more so than the HQ setting on the Olympus. That is why the file is so
small for a 4 MP camera. Never having compared these cameras, I cannot say
whether this will really make any practical difference. However, I do know
from experience that a large zoom, such as on the DX6490 can sometimes make
the difference between getting at least a good picture...and no picture at
all.


--

"The human adventure is just beginning"

"A. LEVINE" <A1newsapersales@comcast.net> wrote in message
news:MIednS4Oo-XKKvPfRVn-2g@comcast.com...
> My cousin has a Olympus D580 . This camera is relatively an inexpensive 4
> megapixel camera. I notice that when the camera is set at the highest
> resolution (2304 x 1728), downloading the jpeg file the size is approx.
> 2mb.
> On the otherhand, my Kodak DX6490 camera is set at highest resolution
> (2304
> x 1728), downloading the jpeg file the size is approx. 1/2mb. Does anyone
> know why theres a difference ? Will it not print as well ?
>
>

 

[Guest]

Archived from groups: alt.comp.periphs.dcameras (More info?)

On Tue, 26 Apr 2005 17:49:45 -0400, "A. LEVINE" wrote:

>My cousin has a Olympus D580 . This camera is relatively an inexpensive 4
>megapixel camera. I notice that when the camera is set at the highest
>resolution (2304 x 1728), downloading the jpeg file the size is approx. 2mb.
>On the otherhand, my Kodak DX6490 camera is set at highest resolution (2304
>x 1728), downloading the jpeg file the size is approx. 1/2mb. Does anyone
>know why theres a difference ? Will it not print as well ?

Kodak let you store more pictures on the same space thru the use of
a higher compression rate for the JPEG - more data is lost to the
lossy compression of the raw picture data to the JPEG format.

And, unfortunately: yes, your pictures will not print "as well" if
you by that mean that it will not look good at high magnifications -
beyond 20-25cm on the "long side" - as your cousins pictures, should
you compare them side-by-side.