filmscanners: Canon: Adaptec scsi adapter

2001-02-19 Thread Viacheslav Zilberfayn

Sorry for sending something that could be considered OT.

Adaptec SCSI adapter supplied with Canon2710 does not have connector to
attach internal scsi devices. Meanwhile I use Symbolic Logic adaper,
with which Canon's native s/w fails to operate (VueScan works though).

Sometimes I want to try this CanoCraft to compare against VueScan. So,
does anyone have had any problems with Canon and SCSI adapters other
than the bundled one, if yes how did you solve them? I have also an
idea  to attach missing connector to Adaptec card - seems the card was
originally designed to have one, there is a place for it. Did anyone
tried doing that?

Thanks, Slava

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Re: filmscanners: Re: Scanning problems(photoshop compression)

2001-02-07 Thread Viacheslav Zilberfayn

Yes, I noticed same thing with photoshop 5.0.  Though I don't remember 
whether it was 24 or 48 bit file.

Regards.

--- "Brian D. Buck" [EMAIL PROTECTED] wrote:
 On the topic of file compressionHas anyone else noticed that
 Photoshop
 5.5's compression of 48-bit LZW TIFFs actually makes the file bigger
 than
 the uncompressed version? Not to mention it is achingly slow to open
 them
 up! On my machine it takes about a minute to open a 100MB LZW TIFF
 vs. about
 10 seconds for an uncompressed TIFF. As such, I pretty much stopped
 using
 LZW compression.
 
 One interesting thing to note is that Vuescan's 48-bit LZW TIFFs are
 smaller
 than the uncompressed version, so this isn't something inherent to
 48-bit
 files, just Adobe's way of saving them.
 
 Question: does anyone know if PS 6.0 does a better job with 48-bit
 LZW
 TIFFs? Does the new JPEG compression option for TIFFs work with
 48-bit
 files? That would be nice.
 
 Brian.
 


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filmscanners: VueScan 6.6.1 problems - long pass

2001-02-04 Thread Viacheslav Zilberfayn

I sent it yesterday, but it did not get to the list, so send it again,
and attachments in separate mail.
---

Hi, I just tried VueScan (with new Canoscan 2710), and I'm having some
problems.

1. Take a look at attached images, both saved at highest possible
quality in photoshop. Portion of a full frame, at 100%. Original is
Sensia 400, pushed to 800. "Media Type" set to "Image" - I understood
that's what recommended?

First one scanned with most of "auto" settings disabled (only auto exp.
was
on), one normal pass, one long. Second image is provided for reference
only, scanned with one normal pass only, and "clean" is enabled.

There are several problems here, easy noticable, I highlighted them.
Hardly these could be attributed to lack of my experience with VueScan,
which I admit.

I also do not send portion of image containing bright lamp against
night sky, which leaves fairly large (about 4x as big as a lamp itself)
trail as result of ccd blooming. That is certainly not good situation
for "long pass exposure", so I probably should not have tried scan this
slide with the option at all, but portion of image that I attached
should be fine, shouldn't it? 

2. Sometimes VueScan get into some strange state, when changing
settings does not seem to affect "Scan". Specifically, I was playing
with "image brightness" and "manual exposure". I got some very much
overexposed images and decided to reset these settings back. So I set
"brightness" to 1, and "Auto Exposure" on. Now I started to get
normally exposed "preview"s but SAME overexposed "scan from device"s.
UNTIL I've done "File-Save settings" and then "File-Load settings"
from the same file. Is there something that I'm missing here?

As for autofocus: I expected to be able to set a point in a preview
window, indicating place I'm most interested be in focus. Is this
beyond scanners capabilities?

Thanks in advance, if anyone would be able to help. 
SLava

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1pass-long.jpg



filmscanners: VueScan 6.6.1 problems - long pass

2001-02-04 Thread Viacheslav Zilberfayn

Here is the second image.

Slava

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1pass-no-long.jpg



filmscanners: Minolta Scan Dual II

2001-01-11 Thread Viacheslav Zilberfayn

Is there anyone using Minolta Scan Dual II? I would appreciate if you
share your experience - sharpness, noise, convinience etc.

Thanks in advance. Slava

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RE: filmscanners: Re: So it's the bits?

2001-01-11 Thread Viacheslav Zilberfayn

Paragraph is clear enough for me to understand. And is perfectly
correct to my judgement.

Slava

--- Austin Franklin [EMAIL PROTECTED] wrote:
  for
  a given sensitivity from the analog circuitry, changing the
  A/D won't make any difference to the density ranges
  that the analog circuitry resolves.  It only increases the
  accuracy with which we read the range of analog values
  that the CCD *does* resolve.
 
 May be I'm slow today...but that paragraph is really unclear to me,
 and I
 know this stuff quite well.  What exactly do you mean by 'for a given
 sensitivity from the analog circuitry'?  Sensitivity  can describe
 one of
 many characteristics, so this seems ambiguous.
 
 Also, what do you mean by 'to the density ranges that the analog
 circuitry
 resolves'.  The above paragraph seems to intermix (confuse) different
 concepts/terms, and really comes across, at least to me, as not very
 comprehdable.  I don't think 'resolves' is the right word there.
 
 Also, 'analog values that the CCD *does* resolve'?  Again, resolve
 doesn't
 really sound right here...  The only thing in the described system
 that is
 'resolved' is the A/D.
 


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