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Silverfast Ai compared to HDR
PostPosted: Mon Sep 02, 2002 6:36 pm
by bg
I acquired Silverfast AI bundled with my Polaroid SS4000. I have upgraded it to version 6. I have not yet used it. I am using v**s**n currently.
Does Ai include the functions of HDR, in the following sense? I would like to scan negatives/slides, saving the scans in Raw 48-bit 4000dpi form, and later, to 'scan' the disk files and optimize the images. Can I do this with the Ai I have?
SilverFast Ai versus SilverFast HDR
PostPosted: Tue Sep 03, 2002 5:35 am
by President_LSI
SilverFast Ai versus SilverFast HDR
SilverFast
Ai is dedicated to scanning, while SilverFast
HDR is dedicated to processing raw data. With your
Polaroid scanner you must have got a version of
HDR which you can also
upgrade.
Just be aware the new SilverFast
HDR 6 has the SilverFast JobManager included, a over 500$ value.
SilverFast Ai versus SilverFast HDR
PostPosted: Tue Sep 03, 2002 9:00 pm
by President_LSI
SilverFast Ai versus SilverFast HDR
SilverFast
Ai is dedicated to scanners while SilverFast
HDR is designed to process raw data effectively. Also SF
Ai and AF
HDR together can use HiRePP, the unique capability to open 1 GB files in about 1 second and prepare optimisations in real-time.
SilverFast
HDR 6 now has got the SilverFast JobManager by default (no
upgrade necessary - a 500$+ value).
As a
Polaroid customer you have got SF
HDR 5.5 which can be upgraded to SF
HDR 6 for 65$ only.
With SF
HDR 6 using the JobManager you have unprecedented productivity and you can even process multiple Jobs!
Silverfast HDR versus Ai
PostPosted: Tue Sep 03, 2002 11:29 pm
by bg
Your answers are appreciated, but did not address my main question: With my newly-upgraded Silverfast Ai version 6, do I have the ability to 1) save raw scans to disk, and later, 2) optimize those scans from the disk copy without putting the film through my scanner again?
PostPosted: Wed Sep 04, 2002 12:54 am
by Gregory C
With SilverFast's current implementation;
- You can use AI to scan the film and save the data to a 48-bit RAW tiff file.
- You can then use HDR to scan the RAW files and produce your final output files.
...[snipped out]...
Using SilverFast AI to perform the RAW scan has definite advantages over v**s**n because (a) it can embed the scanner's colour management profile, and (b) it can save the raw file in SilverFast's proprietary HiRepp format for fast loading and realtime editing.
regards
Gregory
SilverFast student 
silverfast hdr & ai
PostPosted: Wed Sep 04, 2002 3:15 am
by bg
Are you sure, Gregory, that Silverfast Ai CANNOT read the HiRepp raw files it can write?
PostPosted: Wed Sep 04, 2002 3:46 am
by Gregory C
Erased
No longer relevant
PostPosted: Wed Sep 04, 2002 7:12 am
by LSI_Flyvbjerg
Just to make it clear:
The
Ai modules are designed to scan images from scanners or cameras. They can save the images on disk or scan them into a host application. When scanned to disk, the image will contain the HiRepp information.
Ai modules
cannot read files from disk.
The
HDR modul is designed to read files in the formats TIFF, JPEG and PSD. The
HDR module
can also read the HiRepp information.
Eric.
HDR and HiRepp
PostPosted: Wed Sep 04, 2002 3:07 pm
by Gregory C
The HDR module can also read the HiRepp information.
If HDR is used to read a RAW TIFF and output another TIFF using the 48 Bit HDR Color image mode, will the new TIFF file contain HiRepp data?
regards
Gregory
PostPosted: Thu Sep 05, 2002 6:59 am
by LSI_Flyvbjerg
Yes, all SilverFast modules (including
HDR) do include HiRepp information, when scanning to file.
BTW, HiRepp is not limited to raw format, it?s also included in 8-bit files.
Eric.