[sane-devel] scanning negatives using HP4850 and genesys backend

[7xsuazlhhtls at gmail.com]

|I recently acquired an HP Scanjet 4850 scanner.  The document scanning 
works with no problems.  This particular scanner has a negative/slide 
scanning component built in to the lid of the device.  This includes a 
separate lamp to illuminate the film for scanning.  The lamp in the lid 
comes when I run a hardware self test procedure but I have not 
discovered any way to have the lamp come on when scanning using sane.

Is this capability supported?

info about my setup ---

HP Scanjet 4850

$ scanimage -V
scanimage (sane-backends) 1.4.0; backend version 1.4.0

genesys backend

Fedora Linux 44 (Workstation Edition)
Linux 7.1.5-200.fc44.x86_64|
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