Digital BW, The Print

Didn't we go through this in the last "What size to scan" thread? If I
remember correctly, (please correct me if I'm wrong) 350 is about the
max the Epson's use. So, 44x33 @ 350spi is about 500mb (ok, 1gb in 16
bit). I, of course, scan my medium and large format in 16 bit. (Jeff
Schewe says that anyone who isn't working in 16 bit is a "recreational"
Photoshop user.) So, by the time I've mucked the pixels around in 16
bit/channel, flattened and converted to an 8 bit tiff for printing
(Can't wait for my IP5, which won't require tiff files to print) my file
is back to 500 mb. Will More than 350 ppi/spi give me a visually better
print (disregarding viewing distance)??
 
Stan Shire
Associate Professor/Department Chair
Photographic Imaging
Community College of Philadelphia
Adobe Photoshop 6 A.C.E.
 
215 751-8320
sshire@...
-----Original Message-----
From: Anthony Atkielski [mailto:atkielski@...] 
Sent: Friday, September 20, 2002 8:53 AM
To: DigitalBlackandWhiteThePrint@yahoogroups.com
Subject: Re: [Digital BW] Re: 4x5 Neg Scan Resolution
 
Stanley writes:

> Geez! How many of us are printing 44"x33" prints
> (that is approximately = to a 500meg file?)

A 6x6 image scanned at 4000 dpi and 16-bit depth will yield about 480
megabytes.  A 6x9 image will reach 850 MB or so.  Presumably if you are
shooting medium format in the first place, it's because you intend to
make
very large prints that will be examined at close range--otherwise you
could
simply shoot 35mm or even digital.  This is all the more true for
large-format images.  Incidentally, an 8x10 transparency scanned at 5000
dpi
(about the highest one ever need go with slide films) yields a 12,000 MB
file.  Such a file could produce a backlit mural 60 feet on a side,
large
enough to adorn the wall of a railroad station or airport terminal.

I've seen 15x7-foot backlit enlargements from digital camera files, and
they
look horrible, as the lack of resolution is extremely easy to see unless
you
are practically in another room.  No such problem with large film
formats.

One other reason for using very high-resolution images is that they give
you
a great deal of headroom for manipulation in Photoshop before they start
to
degrade visibly.







Yahoo! Groups Sponsor


ADVERTISEMENT
 
<http://rd.yahoo.com/M=233214.2377745.3805144.2225242/D=egroupweb/S=1705
019182:HM/A=1227861/R=0/*http:/ads.track-star.com/linker.ts?ts=1;2;312;3
_2_11> 

 
<http://us.adserver.yahoo.com/l?M=233214.2377745.3805144.2225242/D=egrou
pmail/S=:HM/A=1227861/rand=377411388> 

Please visit the Group Homepage to check the Files, Bookmarks, Polls and
other resources as they are often being updated. The page is at:

http://groups.yahoo.com/group/DigitalBlackandWhiteThePrint

If you wish to receive no emails or just a daily digest, or you wish to
unsubscribe, please edit your Membership preferences by visiting this
same page.

Please follow these basic guidelines:
- Include your full name with your message.
- Include the address of your website, if you have one.
- As threads develop, trim off excess portions of earlier messages to
keep them short.
- As the topic of a thread changes remember to change the subject
header.
- Good manners are required at all time. No personal attacks or
&amp;amp;quot;flames.&amp;amp;quot;
- Complete your Yahoo profile.
- Before posting a question, search the message archives and the various
resources on the homepage. 




Your use of Yahoo! Groups is subject to the Yahoo!
<http://docs.yahoo.com/info/terms/>  Terms of Service. 


[Non-text portions of this message have been removed]