 |
| vendor: |
Microsoft
(WIA-to-TWAIN bridge)
Dosadi is not affiliated with this manufacturer. |
|
| website: |
Windows
Image Acquisition Drivers
also: Still
Image Devices (nice WIA overview) |
| comments: |
Microsoft
does not sell any TWAIN devices, but they offer in Windows Me and
Windows XP a module that makes all WIA
devices also appear as TWAIN devices.
Microsoft seems unable to focus on imaging consistently for more
than two consecutive quarters, so as usual, they support TWAIN without
quite understanding it, while offering a competing proprietary standard
called WIA - which they promote strongly but support indifferently.
On the positive side, for many devices WIA is plug-and-play, so a
device can be used with no software installation. Also, compared to
TWAIN 1.9, WIA offers substantially better control of digital still
cameras and we recommend it for that. |
| devices: |
Numerous,
particularly good support among digital still cameras. |
| issues: |
The
WIA TWAIN driver notably violates the TWAIN standard by displaying
a modal dialog during the MSG_ENABLEDS triplet. WIA also appears
to have a time-out mechanism that can cause scanning to fail spuriously
on devices with long lamp warm-up times. In general, we do not recommend
using the WIA TWAIN driver with any device that has a native TWAIN
driver: The native TWAIN driver always works better. |
| features: |
{TWAIN
Features} |
|