| This department will attempt
to provide solutions to problems readers may have getting into and using
digital cameras, scanning, and using digital photographic images with
a computer and different kinds of software. All questions sent to me will
be answered with the most appropriate information I can access and provide.
However, not all questions and answers will appear in this department.
Readers can send questions to me addressed to Shutterbug magazine, through
the Shutterbug web site, directly via e-mail to: editorial@shutterbug.net
or fotografx@mindspring.com
or by US Mail to: PO Box 2830, Lompoc, CA 93438.
The Limits Of Enlargement
By Interpolation
Q. I recently purchased Version 2.5 of Genuine Fractals. I was quite impressed
with what it did with a 3-megapixel (9MB) image when I enlarged it to
13x19”. I was just wondering what your impression of this software
was. Are there specific limitations you feel the software has?
G. Hupp, Jr.
A. Yes,
Genuine Fractals does a good job. But, the limit is that it cannot add
any information that is lacking in the low-resolution original. No one
notices that because they never see a comparison between the Genuine Fractals
image and one made of the same scene captured at a high resolution. If
you did, then Genuine Fractals would not look so good. There is a lot
of difference in how much image information is in a 9MB image file and
a 60MB image file.
Color Correction &
Color Management Applies To Digital Camera Images, Too
Q. I am hopeful you can provide me with an answer to my digital question.
Problem: My pictures look very flat. Details: I have a Canon D30. I have
shot outdoors, indoors, in studio with strobes, everything. I edit on
Photoshop 6.0 (mostly to crop or to lighten using image/adjust/levels).
I submit file to epixel.com for prints. I request matte finish/border.
The pictures look very flat, no contrast, no exciting color. Is this a
common problem? Is there a setting on my camera that I have incorrectly
set? I have tried printing with Adorama and it was slightly better. What
do you think?
Meaghan Capobianco
A.
There could be a number of reasons why you are not obtaining the contrast
and saturation in your prints. First of all, if the image on your computer’s
screen in Photoshop looks the way you would like a print to appear, then
it is likely what you are seeing on screen does not accurately represent
what is in the image file in terms of contrast and saturation. This could
be due to working with a computer that is not set up to support color
management, and would be indicative of a monitor that is not calibrated
or profiled. This problem could be contributed further if your Photoshop
setup in Preferences does not enable color management.
Also, in addition to adjusting for image overall brightness in levels,
the white and black limits of the gamut must be set so the image information
fills the gamut. Then assuming you are working with a calibrated and profiled
monitor and color management is correctly enabled in Photoshop, you should
be able to adjust contrast using the Photoshop Curves dialog tool, and
color saturation using Photoshop Hue/Saturation dialog tool.
Scanning Panoramic
Format Film
Q. I recently purchased an Epson 2450 flat-bed scanner to specifically
scan my 6x17 panoramic transparencies. However, the scanner only comes
with film holders for 35mm, 4x5, 120, and 6x9 film formats. I knew this
when I purchased the scanner, but believed I could come up with a design
of my own to hold the 6x17s. So far I have been unsuccessful. I have made
several scans of the 6x17 chromes, but I have to lay them directly on
the scanner glass. I am afraid I will either damage my chromes or the
scanner glass no matter how careful I am. Do you have any solutions for
this problem?
Gil Stebbins
A. Most
scanners do not provide film holders for unusual sizes like 6x12 and 6x17cm
film. I have many images that I have scanned from 6x12cm film images.
I have made my own frame-type film holders to do this out of either thick,
stiff plastic or compressed, heavy card stock. The thickness of this material
should be as close as possible to the thickness of the Epson film holder
where it supports the film above the scanner’s glass scan surface.
I have found materials that work quite well in office supply stores by
selecting things like dividers for file cabinets and covers for reports
and adapting them to my use. When I have found the material that will
do the job, preferably in black, I then use an Exacto knife and steel
ruler to cut the outer and inner perimeters of the frame. To mount a film
image on the frame I use repositionable Scotch tape at the edges of the
film to hold it securely to the frame I ave made.
Consistent Printer
Performance
Q. I read your article “Toward The Perfect Print” in the April
2003 Shutterbug. I appreciate your insight on this subject and I’d
like to request a copy of your test image. I will be making my own, but
would like to get started with yours. By the way, I wish my printer were
“incredibly consistent.” It’s an Epson 820 and when
it’s good, it’s very good and when it’s bad, it’s
really bad, even from the same computer and same image. I suspect the
problem is the semiarid climate here in Colorado causing nozzles and print
heads to dry out and clog. Lots of cleaning and test prints are required
to maintain things in a consistent state. Short of building a humidor
for my printer, do you know of any fixes to this problem?
Mills Ripley
A.
We have a similarly dry climate here in California much of the year. Two
things will help: 1) Never leave your printer turned on when not actually
in use—this will keep air from getting at the print head and reduce
any drying out. 2) Avoid letting your printer sit even turned off for
extended periods of time (days). If a printer is used every day it is
less likely to perform inconsistently. A copy of the print test image
is attached to this e-mail reply.
Two Scanners Better
Than One?
Q. I am a professional photographer whose primary output is photos for
photographic books about historical subjects. For my next book, I want
to scan some of my existing 35mm and 21/4x21/4” transparencies.
The maximum image size I use is 9x9”. As you suggested in a recent
article, I’m thinking about buying two scanners instead of one that
does both sizes.
Because of articles I have read, the Epson Perfection 2450 scanner will
probably be my choice for the medium format size, and either the Microtek
ArtixScan 4000tf or the Pacific Image Prime Film 3600 Pro for the 35mm.
There’s plenty of information about how these perform for making
prints, but I’ve seen nothing about how good they are for producing
scans for the old-fashioned four-color printing process. In your opinion,
would the output from these scanners be equal to the reproduction quality
of color-separation negatives made from transparencies? Thanks for all
the great info you provide in your articles.
Bill Moeller
A. The
Epson Perfection 2450 Photo scanner has been replaced by the new Epson
Perfection 3200 PHOTO and PRO. I have one of the PRO models and tested
it for a report in this issue. This new scanner is just now becoming available
through sources like B&H. Besides an 800dpi increase in resolution,
this new 3200 PRO comes with a generous software bundle including the
full LaserSoft SilverFast Ai 6.0 software I just reported on recently
in Shutterbug. If you do not want to spend the money on the Microtek ArtixScan
4000tf, I would suggest considering the Canon or Minolta 35mm scanners
at more affordable prices. As far as I know every published photo today
is scanned and digitized for CMYK conversion to go to an offset press.
The making and use of separation negatives on film was abandoned in the
publishing industry some years ago.
Which Mac G4 Model
For A Digital Darkroom
Q. I’m a new subscriber to Shutterbug and I really enjoy your Digital
Help department. I want to start a small photo business. I’m looking
to purchase a Mac G4 and would like to know which model computer and printer
to buy. To start out with, what are your thoughts on the speed of machine
(1.42GHz), size of memory, and their 23” flat screen? Is this too
much machine or what I want to do? What software packages would you recommend?
Ron DelSordo
A. The lower cost dual 1.25 is faster than any of my G4s and
I am never in need of any more speed and power. The only reason I can
see for spending more for the faster 1.42GHz models is if you plan to
process and edit video. I do not recommend any flat panel LCD monitor
for digital photography work as they reproduce a color gamut as much as
a 1/3 smaller than a good CRT. I personally use and recommend Sony CRT
monitors. If you want the best it is the Sony Artisan 21” reference
system with built-in calibration and profiling. Otherwise, the model I
use and like best is the G520P. For those who are really budget restricted,
I recently tested the Apple eMac, which has an all-in-one design with
a 17” CRT and G4 processor, and starts at $999 for the complete
computer with monitor. With any model computer you purchase buy it with
at least 1GB of RAM.
Black And White Film
Scanning
Q. I continue to read about the poor job that so many 35mm film scanners
do with black and white negatives. I only shoot black and white negatives
though. I am an amateur that needs a 35mm film scanner to meet this need.
I want to be able to scan in everything from Agfa APX 25 to Kodak TMZ
p3200. Which of the current 35mm film scanner/software packages (under
$1000) is the best for this task? Thank you very much for taking the time
to respond to my question.
Wayne LaMothe
A. The
“poor job” you referred to regarding the scanning of black
and white has not been a physical fault of the scanners but due to the
fact little development has been done until recently in scanner driver
software that adequately supports black and white silver-based film scanning.
That is why I wrote an article on black and white scanning that was published
in Shutterbug some issues back. A more recent article reviewed the Microtek
ArtixScan 4000tf and LaserSoft SilverFast Ai 6.0, which has very improved
black and white film scanning support. Since that review was published
I acquired a 4000tf with SilverFast 6.0 for my own use, which includes
about 75 percent scanning black and white, and am quite satisfied with
the performance. I believe you would be able to access both of the mentioned
articles on our web site at www.shutterbug.net.
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