"Michael J. Kravit" wrote:
> <SNIP>
>
> 3. The negative was scanned on a Howtek D4000 drum scanner in Raw 16
> bit Grayscale at 364dpi at a image size of 24x24. I do this because
> for some reason I find that images scanned at even multiples of
> 100dpi tend to have banding. I scan twice, once for the highlights
> and again for the shadows. I then export the 16bit Raw image into
> Silverfast HDR and make most basic tonal adjustments.
>
> <SNIP>
> As for scanners, nothing compares to a drum scanner. The truth is we
> have a Fextight at the Photo Centre locally. Scans from that scanner
> are nice, bit in enlargements they are soft compared to the Howtek or
> the better drum scanners. My Howtek is not a new scanner, but it is
> about the least quality I would accept. I paid $6,500 for it with 2
> drums, a mounting station, and a good number of supplies and spare
> parts, when a photographer's lease on it was up. New the scanner is
> $39,000.
>
> Do not sharpen your images. Yes, I know some sharpening may be
> required. The exchange image I submitted was NOT sharpened. If you
> must sharpen, zoom in very clost to a detail of hair or skin or grass
> and only sharpen the least amount to see a subtle visual difference.
> Use the preview button to go back and forth to see the change. At the
> very most I may sharpen 25-50% if that.
>
<SNIP>
A few points:
At the Expo, I was talking with Jack Phipps of 'Applied Science Fiction' about scanners and sharpness. He
pointed out that in almost *all* scanning software there is an algorithm for sharpening on the fly as the
scanner works. Which is to say that it is very difficult to truly judge the sharpness and softness of raw
scans unless everyone understands the minutia of their particular software.
The second thing is about Imacons (or any ccd high end scanner) vs. drum type scanners:
There has been a lot of debate as to which is better on both high end scanner listservs that I'm on. Finally,
it seems that one has to say that they're 'different' from each other. Some prefer the CCD and some the
drum, it depends on the specific films and outputs.
But specifically on the drum vs. the older Imacons:
One of the biggest problems of the older Imacons was that there was no cooling for the ccds, and therefore one
got more noise in the scans. The latest Imacon has addressed this issue.
That said, one has to go to *very* high end ccd scanners (much $$$) to get parity to a drum scanner. It seems
that since drum scanners have been around in the market longer, there are more of them around to be sold used,
and therefore, via 'supply and demand', they are available (used) cheaper than the better ccds.
Finally, Michael, when looking at your image...
First, it is breathtaking, has amazing brilliance and tonal range, as well as all the detail one could ever
ask for, it reminds me of the tonal ranges that Karsh got (a big compliment!), but...To my eye, it appears
over sharpened in some areas. I know that you said that you do not sharpen, but in the areas of the image
like the lighter bags or the face there is a very tight granular pattern that I do not think is grain. A
medium format (Hasselblad, you said?) negative should be virtually grainless at this sized enlargement, a sort
of plasticized surface if you will. Is that sharpening, grain, or noise? It could be noise as these tones
are from the most dense sections of the negatives. Or..Is it the digital printing process itself? Could it
be that there is no light grey in the Cone inks, so that the dither pattern shows up as grain?
I just louped your photo (something that I consciously avoided, as it has no place in real world viewing
experiences), to see if I could determine ink colors. What surprised me was that there was a classic grid
halftone pattern, instead of a random stochastic dither. Again, that means nothing, just interesting to me.
I want to stress that I am nit picking. I am specifically trying to understand digital imaging and how it
represents and compares to traditional photographic imaging. For example, in color printing, as far as I'm
concerned, digital output wins, hands down, over color wet prints. There is a far wider gamut and *way* more
tonal controls than one can get using any wet color photographic process. With B&W, I'm not sure yet.
Digital output certainly is a far easier process to get 80% of the way there, but so far, I worry about that
last 20%. Wet vs. digital (output, not original capture) processes each have their own strengths and
weaknesses (duh).
I have noted in the past that entry level students get much better results using B&W digital output than
traditional wet process printing. The skills required to do wet process take longer to learn than the
pre-packaged algorithms of the digital output process. As with either of these skills, the high end
production skills take a long time to master.
Again, I want to stress that I love your image and thought it breathtaking.
Harvey Ferdschneider
partner, SKID Photography, NYC
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