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What do the dashed vertical lines in Histogram mean?
PostPosted: Fri Aug 14, 2009 5:58 am
by hassiman
Hi,
Please look at the screenshot attached showing the pre-scan histogram of a Kodachrome slide scanned at 4000 dpi with the software set for Kodachrome and the scanner profiled using tha SilverFast IT8 calibration taget slide. What does this mean and how do I correct the problem if one exists?
Re: What do the dashed vertical lines in Histogram mean?
PostPosted: Fri Aug 14, 2009 2:30 pm
by LSI_Morales
Dear Hassiman,
As you can see by yourself we did not get any image. Without an illustration is hard to tell.
Cheers
Re: What do the dashed vertical lines in Histogram mean?
PostPosted: Fri Aug 14, 2009 5:34 pm
by hassiman
Here you go....
What does this indicate and how is it corrected?
- This is a screenshot showing white dahed vertical line in Histogram
- sc4 resized.jpg (99.81 KiB) Viewed 1470 times
Re: What do the dashed vertical lines in Histogram mean?
PostPosted: Fri Aug 14, 2009 6:50 pm
by hassiman
LSI_Morales wrote:Dear Hassiman,
As you can see by yourself we did not get any image. Without an illustration is hard to tell.
Cheers
Image scanned from 35mm Kodachrome slide3. Sliverfast set for SCREEN 4000 - DPI 4000 - 48 Bit color - Kodachrome - IT8 Calibrated with SF IT8 Kodachrome IT8 35mm target
Another example:
- Another example of dashed lines in histogram
- Histo_01re-sized.jpg (160.21 KiB) Viewed 1470 times
Re: What do the dashed vertical lines in Histogram mean?
PostPosted: Mon Aug 17, 2009 2:01 pm
by LSI_Morales
Dear hassiman,
Those lines appear in the histogram when using a fixed point for the densitometer. I guess you might have placed a fixed point which is showing you those lines, if you close the extra window (deleting the point) you will see how the lines disappear.
cheers