Winter 2004-5 - Karlu Photographic

Some notes about ‘dpi’ etc.
DIGITAL IMAGING
Choosing a scanner
We assume that most of our customers
will be looking to make high quality
images, probably printing them on an
inkjet printer, and will be using a
negative or slide as a start point.
That’s why we don’t sell low price
flatbeds, which are great for prints but
don’t have the resolution for negs or
slides. Higher priced flatbeds, adapted
for transparencies, are superior in both
lens and mechanical quality, which
means that for medium format slides,
they can be used for many purposes.
For 35mm users, dedicated film
scanners (for the price of a high quality
lens) deliver superb results.
Scanning resolution
is described in ‘dpi’ (dots per inch), in
slightly different ways for film and
flatbed scanners.
Film scanners will have a single
dpi figure. 2900dpi means 2900 x 2900
pixels on the sensor.
Flatbeds will have (e.g.) 1200 x
2400 dpi resolution. The first figure is
the sensor dpi – across the scanner.
The second is the number of steps the
scanner takes along the length of the
scanner bed. The first figure is the
more important indication of quality.
Print resolution
Printers, like flatbeds, have two figures
– the smaller (e.g. 1440dpi) refers to
the number of dots of ink per inch
which the printer is capable of laying
down. The second is the number of
lines along the length of the print.
Both should not be confused with the
output resolution which you will set
when using a film scanner.
For optimum quality for most
printing, 300dpi output resolution is
fine. Any higher figure will result in
very large file sizes which will clog the
computer and take ages to print, with
barely discernible improvement.
So by a quick mental calculation,
it’s easy to see what print size along
the long side at maximum print quality
can be achieved from 35mm. For
example: 2900dpi ÷ 300 dpi x 1.375=
13.3”. In fact, you will find that excellent
prints can be made at 200dpi.
Film scanners
Minolta Dimage Scan Dual 4
USB scanner with easy ‘one-click’
approach (or you can turn on a more
advanced screen when you get more proficient),
with optional image enhancement.
Automated scanning of up to six
35mm pictures.
� 3200dpi optical resolution
� 48 bit colour input, 24 bit output
� 3.6 density range
� Scan speed: 6 secs preview, 21 full resolution
scan.
� Supplied with Photoshop Elements
� Windows 98 to XP; Mac OS8.5–9, 10.1.5
� USB 2.0/1.1 interface
MNSD4 £269.00
Minolta Scan Elite 5400
Sets a new resolution level for desktop film
scanners, allowing a 300dpi A3+ print to be
made. Multiple scanning up to 16x is available
for really dense slides, and it will
batch scan up to 6 frames. Prescan time
around 10 secs. Full resolution scan 60-69
secs.
� 5400 dpi optical resolution
� 48 bit colour input and 48/24 output
� 4.8 density range
� Supplied with Digital ICE software
� Windows 98SE/2000/Me/XP; Mac
OS8.6–9.x, OS10.2.1
� Firewire and USB2.0/1.1 interface
MNSE5400 £529.00
Nikon Coolscan V ED
Latest in the excellent Coolscan series has
4000dpi, 7-element ED lens, stable LED
light source requiring no warm-up.
Also included is the latest Digital ICE4 software which as well as removing dust,
scratches and other defects from images,
will now restore faded colours, improve
grain, and more.
� 4000 dpi optical resolution
� 42 bit colour input and 48/24 output
� 4.2 density range
� Typical full res scan speed 38 secs
� Windows 98SE, Me, 2000, XP; Mac
OS9.0+, OSX10.1.3+.
� USB2.0/1.1 interface
NKLS50 £449.00
Nikon Super Coolscan 5000 ED
The professional’s choice with unmatched
scan speed and an optional roll-film
adaptor capable of scanning a whole film,
or 50-slide bulk feeder. Includes Digital
ICE4 software.
� 4000 dpi optical resolution
� 48 bit colour input; 48 or 24 bit output
� 4.8 density range
� Typical full res scan time 20 secs
� Supplied with Nikon Scan 4 software
� Windows 98SE, 2000, Me, XP; Mac
OS9.1+, OSX10.1.5+
� USB2.0/1.1 or Firewire interface
NKLS5000 £899.00
Printers
Epson Stylus Photo R300
Our price includes 2.5”
LCD monitor worth £79
Using a six-ink system for superb quality
and maximum ink economy, the R300 is
ideal for either connection to a computer
or for standalone use with digital cameras.
� Borderless printing up to A4 at 5760
optimised dpi.
� Integrated memory card slot for CF, xD,
SM, SD, MS etc
� Design and print CDs and DVDs with the
supplied software.
� Back up images to a compatible CD-R or
Zip at the touch of a button.
EPR300 £156.00
Epson Stylus Photo 2100
The current standard in A3+ printers.
Long lasting lightfast prints from ink
system, with interchangeable matt and
photo black inks for matt and gloss media.
� 2880 x 1440dppi print resolution
� Straight paper prices for CD and other
media printing up to 1.3mm thick.
� Border-free prints up to A3+
� Supplied grey balancer software for calibrating
black and white printing.
EP2100 £445.00
104 Speed Graphic PHONE: 0845 3 30 55