Scaning 48 bit images in SF 5.5

jrsherman · Postby **jrsherman** » Fri Mar 22, 2002 6:47 am

I am using a Polaroid SS4000 SF5.5 when I scan negatives (Fuji Superia 400) 48 bit images into PS6 I wind up with a negative image. This only happens with 48 bit scans, when I scan at 36-24 bit I get a positive image. Does anyone have any idea what the solution is?

LSI_Flyvbjerg · Postby **LSI_Flyvbjerg** » Fri Mar 22, 2002 9:23 am

With 48-bit scans you are scanning the image as "raw" data. What you get in your image is exactly what the scanner sees (and it sees a negative). Please note, that you can?t open any of the correction dialogs in 48-bit mode, like gradation, histogram and color correction. The big advantage is, that you still have the full dynamic range in your 48-bit image. The new SilverFast version 5.2 offers you a second 48-bit mode, where you can use all the corrections (gradation, histogram and color correction) for 48-bit images. This new mode also converts negatives to positives.

Eric Flyvbjerg

ilyons · Postby **ilyons** » Fri Mar 22, 2002 10:18 am

The new SilverFast version 5.2 offers

should read 5.5.2

jrsherman · Postby **jrsherman** » Fri Mar 22, 2002 10:10 pm

I guess that means I will have to upgrade to SF 5.5.2. Thanks, Len

jrsherman · Postby **jrsherman** » Sun Mar 24, 2002 12:27 am

How do I go about downloading SF 5.5.2? I can't find a specific download from SF 5.5 to SF 5.5.2 Len

LSI_Support · Postby **LSI_Support** » Fri Apr 05, 2002 9:00 am

Here are the 5.5.2 plug-in link for your Polaroid 4000:

https://www.silverfast.com/product/Polaroid/210/en.html

greetings

Arne Glet
LaserSoft Imaging AG

jrsherman · Postby **jrsherman** » Tue Apr 16, 2002 5:40 pm

I have upgraded to SF5.5.2 using Polaroid SS4000 with PS6.0. When I scan Fuji Supera 400 (negative film) using HDR @ 4000 the prescan shows as a positive. I can make some adjustments in Nega fix then scan it into PS6 it then scans in as a negative a very dark negative. When I invert it in PS6 it is a very light positive so much so that I cannot bring the color into balance. Does someone out there have any ideas? When I redo the scan in 36-24 bit I get a file in PS6 that matches the prescan. Len

LSI_Flyvbjerg · Postby **LSI_Flyvbjerg** » Wed Apr 17, 2002 7:57 am

I guess your image mode is "48-bit HDR colour". In this mode, the image is scanned as it is (or as the scanner sees it), expect of the optional gamma.
If you select "48-bit colour", all your corrections (filter, NegaFix...) will be applied to 48-bit.

Eric.

jrsherman · Postby **jrsherman** » Thu Apr 18, 2002 7:54 pm

Your fix worked. Thank you, Len

Scaning 48 bit images in SF 5.5

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