OK, I was covering my butt, in case "someone" (a-hmmm) knew of some I
didn't... I don't deal in the $150,000 scanner market so maybe there are
some scanners that can accurately capture a full 16 bit depth.
Several scanner companies will throw around dMax numbers based upon the
mathematical "possib
Art-I'm actually partially on your side--I agree that 8 bits is mostly the limit of
what
humans can discern. There are rare cases of large, "shallow" (not much tonal range)
gradients that haven't been dithered, either artificially or by film grain, that can
show
banding. But again, that's rare. A
Art,
I concur with everything you have said except the last paragraph which
concerns something I have no knowledge about and no concern with, given that
I am not into gaming. As I have noted in several of my posts, I see as a
potential positive for hi-bit scanning the fact that it furnishes more r
Of interest in this discussion:
http://www.ledet.com/margulis/ACT_postings/ColorCorrection/ACT-8-bit-16-bit.htm
and
http://www.ledet.com/margulis/ACT_postings/ColorCorrection/ACT-16-bit-2002.htm
Money quote from Dan Margulis: "The bottom line of all my tests was,
with one important caveat that I'l
I couldn't resist throwing in my two bits (or eight bits, as the case may
be). I tried using my SS4000 at 14 bits, or maybe it was 12 bits (it's not
capable of true 16 bits) because I had read that you lose less information
when making color corrections on high-bit files. However, I found that my
Hi Preston,
Great post, thanks...but again, I MUST stress, that Margulis is specifically
talking about COLOR images, NOT B&W, and that distinction is VERY important.
Regards,
Austin
> -Original Message-
> From: [EMAIL PROTECTED]
> [mailto:[EMAIL PROTECTED] Behalf Of Preston Earle
> Sen
>Preston wrote
>When Photoshop converts from 16-bit to 8-bit it applies very fine noise
>to try to control subsequent problems. Most scanners don't. I would have
>expected this to make a difference but not to the point that the scanner
>8-bit file would completely suck and the Photoshop 8-bit file
"Austin Franklin" <[EMAIL PROTECTED]> noted: "I MUST stress, that
Margulis is specifically talking about COLOR images, NOT B&W, and that
distinction is VERY important."
Yes, color *photographic* images. It doesn't apply to computer-generated
images with gradients, tints, etc.,
> ...It doesn't apply to computer-generated
> images with gradients, tints, etc., either.
>
> Preston Earle
> [EMAIL PROTECTED]
Can you scan those with a film scanner?
;-)
Unsubscribe by mail to [EMAIL PROTE
Hi,
Take a picture using 6MP DSLR at full resolution. Also scan a slide
using 4000dpi scanner. Open both image files in Adobe and observe at 100%.
Image from DSLR looks to have sharper edges compared to scanner output.
What is the reason for this?
Is it because of in-built sharpening of DSL
Hi Ramesh,
A two pixel camera will give you a perfectly sharp image. Sharpness is no
indication of image fidelity (ability to reproduce accurately). It also
depends on your scanner and your film and a whole lot of other things...
Regards,
Austin
> Hi,
>
> Take a picture using 6MP DSLR at fu
> From: Nagaraj, Ramesh
>
> Take a picture using 6MP DSLR at full resolution. Also scan a slide
> using 4000dpi scanner. Open both image files in Adobe and
> observe at 100%.
>
> Image from DSLR looks to have sharper edges compared to scanner output.
> What is the reason for this?
> Is it beca
I was lucky enough to attended IFA, the Berlin consumer electronics
exhibition, last week & managed to speak to a guy at Verbatim about their
disks and longevity. (They're claiming 100 years on their write-once discs.)
He was very honest in making clear that this was a projected value based on
exte
"Nagaraj, Ramesh" <[EMAIL PROTECTED]> asks:
>>>
Take a picture using 6MP DSLR at full resolution. Also scan a slide
using 4000dpi scanner. Open both image files in Adobe and observe at 100%.
Image from DSLR looks to have sharper edges compared to scanner output.
What is the reason for
on 9/11/03 4:59 PM, David J. Littleboy at [EMAIL PROTECTED] wrote:
>
> "Nagaraj, Ramesh" <[EMAIL PROTECTED]> asks:
> Take a picture using 6MP DSLR at full resolution. Also scan a slide
> using 4000dpi scanner. Open both image files in Adobe and observe at 100%.
>
> Image from DSLR loo
> From: [EMAIL PROTECTED]
>
> What I want to know is: which one will make a better 11x14 or
> 12x16" print?
> Looking at screen pixels is not the final product, even though it
> does tell
> us something.
If you resize the scanned image down to 6MP, then you can do meaningful
on-screen comparisons
Berry,
> What I want to know is: which one will make a better 11x14 or
> 12x16" print?
That depends on what characteristics of an image YOU like. No one else can
tell you what YOU might think is better (except your wife ;-).
Regards,
Austin
---
From: "Paul D. DeRocco" <[EMAIL PROTECTED]>
> From: [EMAIL PROTECTED]
>
> What I want to know is: which one will make a better 11x14 or
> 12x16" print?
4000 dpi scans of 645 slides look very nice at 12x16. Very. I've enver been
able to get a decent 11x14 from 35mm, but people claim it's possible
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