As I followed your link I eventually realized that I was confusing TWAIN
and WIA which I have always thought were different terms for the same
function with WIA being the later development. Not completely so
although Microsoft says WIA contains a TWAIN subset. The first bit of
info is here which makes it clear that they are distinct facilities and
that the PSCS6 TWAIN plug-in is 32 bit only.
------------------------------------------------------------------
In Windows, the Photoshop TWAIN plug-in can be used if you run Photoshop
CS6 in 32-bit mode. TWAIN is not supported in Photoshop when it’s run in
64-bit mode. If you need a scanning solution when you run Photoshop CS6
in 64-bit mode, use the WIA (Windows Image Acquisition) interface for
your device, if it’s available. WIA is also available for use when
running Photoshop in 32-bit mode. Contact your scanner manufacturer for
more information.
-----------------------------------------------------------------
Then, since TWAIN is 32 bit only we have this answer from Epson about
how to import 64 bit images into PhotoShop which is to use WIA instead
of TWAIN. But that also comes with a very serious caveat. Although WIA
supports 64 bit it's not full function. In particular no film scanning
since the transparency unit is not supported in WIA. But WIA does make
it easy to import scans from paper documents into PhotoShop directly
from Epson Scan
-------------------------------------------------------------------
Use the Windows Image Acquisition (WIA) from the File > Import menu to
import images from the scanner.
Note: The WIA driver does not offer all the features and control
provided by the Epson Scan driver. It also does not support scanner
options such as a Transparency Unit (TPU) for film scanning or an Auto
Document Feeder.
-------------------------------------------------------------------
These things explain a lot of mysteries I encountered with CS5 (after
CS3) and would have encountered in CS6 had you not brought it to my
attention. Thanks.
Chuck Norcutt
On 11/13/2012 12:04 AM, Moose wrote:
> On 11/12/2012 7:42 PM, Chuck Norcutt wrote:
>> Thanks. Actually, I have that book on my Kindle Fire. I never
>> completely read it and it had worked its way to the bottom of the pile.
>> Thanks to your mention it has been found again.
>>
>> I have just installed PSCS6 in the last week and it hasn't done any work
>> yet let alone run the scanner. I think the problem you mention with WIA
>> access from PS to the scanner may also be in CS5. I recall trying to
>> scan something and the scanner wasn't found.
>
> Yes, they stopped including it with 5. All explained here.
> <http://helpx.adobe.com/photoshop/kb/twain-plug-photoshop-cs4-cs5.html>
>
>> ... I have not made any serious use of VueScan with
>> the Epson V700
>
> I use my Canon 9950F flatbed for scanning various text, music, drawings,
> printed images, and so on. The TWAIN driver is
> pretty darn good for that. I tend to call it up with the PS Import command,
> as it is then in PS for any editing.
>
> I don't know how I managed to write some stuff in such incredibly light
> pencil as I wanted to decipher today. How could
> I have seen what I was writing? Pencil doesn't fade, does it? In any case,
> the Canon TWAIN driver controls did just what
> I wanted to bring it up. I never even scanned it, just read it off the
> preview scan on screen.
>
> Today's discussion led me to try VS on it. The range of adjustments, more
> than adequate for any image, just didn't do
> what I wanted. I can start the TWAIN driver from a Canon Toolbox, it's just
> more convenient to access it from PS.
>
>> since I was never able to get it to recognize the grid
>> arrangement of the film holders. That's really why I bought the VueScan
>> Bible hoping I'll find the answer in there.
>
> The answer is to use the settings advised in the User's Guide or the TVSB and
> if they don't work, drop Ed a line,
> including a link to an example, if possible. I had to do that once. He
> changed it.
>
>> But I have been fairly well
>> satisfied with Epson Scan when used in its "professional" mode. It's
>> certainly easier to use than VueScan but, of course, doesn't do "raw" scans.
>
> I couldn't find a way to keep Canon's software from excess contrast and
> clipping on slides. I should probably try again ...
>
> Scan It To Me Moose
>
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