Post by K W HartPost by K W HartI don't know whether York uses an optical printing system or scans negs
and
Post by K W Hartprints them with a lightjet system. Generally, scanning and lightjet is
faster that optical- the image can be displayed on a color monitor and the
operator can make adjustments. Does York offer an index print or
"enhanced"
Post by K W Hartprints: text/graphics added to the image? If so, they are very likely
scanned and lightjet printed.
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K.W.H.: You answered many questions that I just asked the gals at my local
Walgreen's. I asked if the pictures were printed optically or digitally
like a printer.
Post by K W HartPost by Ric TrexellThey said they have two systems and the one they have to
add chemicals so that was definately optical. <<<<<<<<<<<<<
I then asked if it was
printed by a scanning laser or like an enlarger. She didn't know and I told
her I really didn't know either. You have explained that. Now the question
is will a lightjet print better than if it is done the old fashion way with
an enlarger? Also I will have to ask about the wash cycle. That is
something I didn't know about. They use Fuji equipment and the Walgreens is
$2.00 higher on both the 24 and 36 exposures than the grocery store across
the street. I still want to ask the camera store about their system.
Thanks for the education. Ric.
In response to your sentence between >>>>....<<<<<: Just because they add
chems, doesn't mean it's an optical printing system, just that It's likely
to be an RA4 system. There are two parts to making a photo on an RA4 system:
(1) exposing the photographic paper and (2) developing it. The paper can be
exposed optically using a photo enlarger or digitally using a lightjet type
system- imagine an inkjet printer except instead of three (or 4) ink
cartridges, it has three colored lasers. After exposing the paper, it is
immersed in developer, then bleach-fix, then (maybe washed and) dried.
In my darkroom, I have a photo enlarger over here, and an RA4 processor over
there. I could also have a lightjet type printer over yonder. Both the
enlarger and the lightjet printer put out an exposed piece of photo paper,
which has to be fed into the RA4 processor. The processor doesn't care which
one exposed the paper.
A quality photo enlarger prints every single 'grain' of the negative onto
the photo paper. (Technically, there is no 'grain' on a color neg, as the
silver particles are removed in processing leaving only the associated dye
'cloud'. But there is one dye cloud for each grain, so it's a difference
without a distinction.) I don't have a scientific cite for this, but I've
read from various sources that a 35mm negative on a medium speed film has
about 36,000,000 'grains' (12,000,000 per color layer). The individual
grains compose the final image, just as pixels do. The more grains (pixels),
the more detail the film is capable of recording, assuming the camera can
keep up with the quality. Obviously, a disposal camera falls short compared
to a top 'o' line Canon/Nikon/Leica.
A lightjet system requires a digital image. Whether that digital image came
from a digital camera, downloaded from your favorite porn site, or a scanned
negative, the lightjet doesn't care- it will still print at (IIRC) around
200 dots per inch, slightly better than the weekend supplement in your local
newspaper ("Parade", "USA Weekend", etc). Very high quality scanners usually
"wet-scan" the negative: the negative is covered with an oil and mounted on
the scanner glass so that it 'becomes' a part of the scanner. The scanner
glass is usually curved and the scanning 'eye' rotates, scanning the
negative in lines. Such a scan can take several minutes to an hour. Such a
scanner is not likely to be in your local Walgreens or a part of a Fuji
system.
So the lightjet workflow falls short in two areas: the quality of the source
scan of the negative, and the quality of the lightjet printing system.
If you want to see a digital system fail, take a photo of a light, solid
color subject, such as a clear blue sky; include some trees in the
foreground for detail. Get an enlargement of 8x10 or larger printed both
optically and lightjet. The difference should be obvious.