Scanning Black&White with HDRi 32 bit

Problems with HiRePP®, NegaFix or profiles

MLoboM
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Joined: Sun May 02, 2010 10:10 pm
Scanner: epson v750
SilverFast Product: Ai Studio

Scanning Black&White with HDRi 32 bit

Postby MLoboM » Sun May 02, 2010 10:20 pm

Hi,
I am new on using scanners and I face a problem scanning B&W films.I always get negative scans that I have to invert through PS. Is there a way to have them inverted through Lasersoft software ?
Thanks

LSI_Morales
SilverFast Master
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Posts: 1430
Joined: Mon Oct 22, 2007 9:33 am

Re: Scanning Black&White with HDRi 32 bit

Postby LSI_Morales » Mon May 03, 2010 7:48 am

Dear MLoboM

from the title of the thread I deduce you are using the scanning mode 32 bit HDRi greyscale to scan your pictures. That scanning mode creates unmodified raw files which means they will not be inverted.
If you want to have the pictures inverted within SilverFast you have to use the 8 bit greayscale mode or 16 bit greyscale mode (not HDR).

Cheers
Alejandro Morales

LaserSoft Imaging
Media manager, Software testing

MLoboM
Visitor
Posts: 2
Joined: Sun May 02, 2010 10:10 pm
Scanner: epson v750
SilverFast Product: Ai Studio

Re: Scanning Black&White with HDRi 32 bit

Postby MLoboM » Mon May 03, 2010 10:49 pm

Thank you for your prompt reply,
can I submit the inverted images (through PS) to Silverfast HDR studio and then proceed to the image infrared treatment in order to remove dust and scratches. What do you suggest as a "simple" workflow in order to scan and process high quality images from negatives?
Thanks again
Cheers

LSI_Morales
SilverFast Master
SilverFast Master
Posts: 1430
Joined: Mon Oct 22, 2007 9:33 am

Re: Scanning Black&White with HDRi 32 bit

Postby LSI_Morales » Tue May 04, 2010 7:43 am

Dear MLoboM,

If you send your 32 bit HDRi files to photoshop and then open it and save any changes, you will destroy the infrared channel.

The best way is to scan your pictures and send them directly to HDR Studio for positivation and infrared correction. Bear in mind that most black and white films will generate artefacts with the infrared correction because of their silver halide content.

Cheers
Alejandro Morales

LaserSoft Imaging
Media manager, Software testing

marpar
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Joined: Sun Jun 19, 2011 2:43 pm
Scanner: Plustek 7600i
Epson V750
SilverFast Product: HDR Studio

Re: Scanning Black&White with HDRi 32 bit

Postby marpar » Sun Mar 18, 2012 5:15 am

If infared is not going to work with Black and white negatives, then why offer it as an option? I was thinking that in V8 you may have developed a new way to use infared to work the same magic on Black and White that it does on color negatives and slides. Hope springs eternal you know!

LSI_Morales
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Posts: 1430
Joined: Mon Oct 22, 2007 9:33 am

Re: Scanning Black&White with HDRi 32 bit

Postby LSI_Morales » Mon Mar 19, 2012 10:24 am

Hi there

marpar wrote:If infared is not going to work with Black and white negatives, then why offer it as an option?


There are chromogenic black and white films, infrared can be applied to this kind of films.

marpar wrote:I was thinking that in V8 you may have developed a new way to use infared to work the same magic on Black and White that it does on color negatives and slides. Hope springs eternal you know!


You can not change physical characteristics of film emulsions with a software application.

Kind regards
Alejandro Morales

LaserSoft Imaging
Media manager, Software testing


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