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Digital BW, The Print

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Re: [Digital BW] Piezography Review: Piezo v. Epson resolution

2001-10-11 by Robert G. Morrison

Where is the posted file, Martin...I can only find the black results.

Robert

On 10/10/01 6:32 PM, "Martin Wesley" <mwesley250@...> wrote:

> Austin,
> 
> Paul's test and posted results were done with all four MIS inks using his
> curves and the Epson color driver in comparison to Piezo driver using all 4
> Piezo inks. They are grayscale images printed as you would a photographic
> image with 4 inks all in use. His tests meet the criteria you specified.
> 
> Martin
> 
> 
> ----- Original Message -----
> From: "Austin Franklin" <darkroom@...>
> To: <DigitalBlackandWhiteThePrint@yahoogroups.com>
> Sent: Wednesday, October 10, 2001 5:02 PM
> Subject: RE: [Digital BW] Piezography Review: Piezo v. Epson resolution
> 
> 
>> 
>>> First, there was a specific allegation made in the Piezo review.
>>> It claimed
>>> that the Epson driver cannot utilize the information in an input file of
>>> more than 360 DPI. Anything more that that would simply be
>>> discarded by the
>>> driver.
>>> 
>>> This is demonstrably untrue.
>> 
>> NOT demonstrated by your test pattern, that is not halftone.  The context
>> was halftone...not just black ink.
>> 
>> The fact is, when halftoning with the Epson driver and only one ink, it
>> takes up 16x more space to produce the same tones...given that, it would
>> only make sense that it has to limit the input resolution WHEN DOING
>> DITHERING/HALFTONING.
>> 
>>> Having looked at a number of identical images that I've printed with
> both
>>> the Piezo and Epson drivers, I must say in most cases I cannot see any
>>> sharpness difference, even with a magnifier.
>> 
>> IMAGES?  As in, grayscale or black/white (typically called lineart) only?
>> Printed with quad tone inks and the Epson driver, or just the black ink?
>> 
>>> At any rate, I consider the drivers to be essentially equal in
>>> their ability
>>> to deliver sharp results.
>> 
>> If you are basing this conclusion on the test image that you posted, your
>> conclusion is erroneous.
>> 
>> 
>> 
>> Please visit the Group Homepage to check the Files, Bookmarks, Polls and
> other resources as they are often being updated. The page is at:
>> 
>> http://groups.yahoo.com/group/DigitalBlackandWhiteThePrint
>> 
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>> 
> 
> 
> 
> Please visit the Group Homepage to check the Files, Bookmarks, Polls and other
> resources as they are often being updated. The page is at:
> 
> http://groups.yahoo.com/group/DigitalBlackandWhiteThePrint
> 
> Please follow these basic guidelines:
> - Include your full name with your message.
> - Include the address of your website, if you have one.
> - As threads develop, trim off excess portions of earlier messages to keep
> them short.
> - As the topic of a thread changes remember to change the subject header.
> - Good manners are required at all time. No personal attacks or "flames."
> - Complete your Yahoo profile.
> - Before posting a question, search the message archives and the various
> resources on the homepage.
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> 
> 
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> Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
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> 

----------------------
Robert Morrison
rmorrison@...

310-397-2704

4131 Bledsoe Ave.
Los Angeles, CA 90066

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