Jack,Just looked at some files from Thanksgiving day.2.5 to 3.5 meg jpegs
each.My 1.5 meg jpegs are after saving a bit smaller than the originals.Sorry
for the distorted facts.Bob
On 11/29/05, Jack Davis <[EMAIL PROTECTED]> wrote:> Bob,> Your in-depth answer
does it for me. I'll archive it and make it a> "frequent study."> Thanks!>>
Jack>> --- Bob Sullivan <[EMAIL PROTECTED]> wrote:>> > Jack,I don't know much
about 20x30 prints.A jpeg of 2000x3000 pixels> > and a RAW shot of 2000x3000
pixels have thesame number of pixels in> > the end, 6 million. Each one of
these pixelshas a Red color> > attributed to it and each color code (R,G, or
B?)takes up a bite.> > Pretty quickly you can see that you are going toneed a
lot more than> > 6 million bites to store a 2000x3000 picture.So no matter how
you> > store the original 6 meg camera's sensor output,you are gonna make> >
some serious compromises. For me, most of thepictures I've taken as> > highest
quality jpegs on the *ist DS have beenin the 1.5 megabite> > size range. (A
maple tree in fall with fullcolors will be more as> > the colors vary from
pixel to pixel a lot morethan a shot with a> > broad ex!
panse of sky.)You can look at these pictures on your monitor> > at full
resolution andsee the pixels that define the edges of things.> > I suspect
that theedges in a 6 megabite RAW file and a 6 megabite> > jpeg would be
verysimilar. The question really c!> > omes down to how much can that image
becompressed before losing> > important detail. I can't really answer thatfor
you as I have no> > experience with 20x30's.Regards, Bob S.> > On 11/28/05,
Jack Davis <[EMAIL PROTECTED]> wrote:> I'll work on> > being "meaningful." In
the meantime I'd love to feel> content with an> > answer to what I though was
an embarrassingly basic> question: Will a> > 1.5mb or 1.5mp jpeg produce as
sharp a 20x30 print as> a 6.0mb or> > 6.0mp RAW capture?> My guess is that
based on mb, no.> Re-opening a> > seriously compressed jpeg should be sparingly
done to> avoid> > artifacts? B'lieve that's what I heard and have
experienced.>>> > Jack>>> --- Rob Studdert <[EMAIL PROTECTED]> wrote:>> > On!
28 Nov> > 2005 at 18:13, Jack Davis wrote:> >> > > How about my quest
ion?> > >> > Rather than retype it here (with one finger), suggest you just> >>
> re-read> > > it.> > > (the initiating point that caused the question> > to be
so stated, was> > one> > > made wherein I could save on CD> > storage if they
were stored as> > 1.5mp> > > jpegs rather than in> > RAW.)> > > I simply
question the end product produced from the> > smaller file.> >> > All I read
was 1.5 meg which I assumed!> > to be 1.5MB(ytes) not> > 1.5MP(ixels) which>
> are of course two> > independent and oft misinterpreted measures.> > Everyone
has to> > be> > arguing about the same thing for it to be a meaningful
discourse> >> > :-)> >> >> >> >> > Rob Studdert> > HURSTVILLE AUSTRALIA> > Tel>
> +61-2-9554-4110> > UTC(GMT) +10 Hours> > [EMAIL PROTECTED]> >> >
http://members.ozemail.com.au/~distudio/publications/> > Pentax user> > since
1986, PDMLer since 1998> >> >>>>>>> >
__________________________________________> Yahoo! DSL – Something to> > write
home about.> Just $16.99/!
mo. or less.> dsl.yahoo.com>>> >> >>>>>>> __________________________________>
Yahoo! Mail - PC Magazine Editors' Choice 2005> http://mail.yahoo.com>>
