Weird artifacts in vuescan scans

[foolproof]

Having tried Vuescan recently again I found the results a bit weird when viewed at 50-100%. Decent enough looking scans but when zoomed in it looks almost like small digital artifacts nearly all over and the odd small blurring streak around the scans. Doesn't matter what format its scanned in or wether adjustments are made or left as unadjusted raw dng. Minolta software doesn't show this at all. Have tried uninstall reinstall. Scanner is dimage 5400 and computer is quite old. I'm thinking it may be that the computer isn't up to it power wise or something like that. Any idea's?

 

[DrTebi]

To me it sounds like you have the infrared filtering on, and maybe on a high setting? That's usually the only time that I get the "defects" that you describe.

Make sure you set Vuescan to the advanced mode, and in "Filter" turn of the dust removal (not sure what it was called... infrared dust removal maybe?).

I have a Minolta Dimage Multi Pro, which is similar to the Dimage 5400, and it works quite well.

 

[brbo]

I have Minolta 5400 and have no problem in Vuescan. It could be what DrTebi said, but since you said that you tried scanning to RAW those artefacts might not be related to IR dust removal on BW film, since Vuescan doesn't apply any filtering (IR or others) on the scan (unless you set the option 'Raw output with' to 'Save' instead of 'Scan').

Can you show us an example of your Vuescan scan?

 

[Johnmcd]

To me it sounds like you have the infrared filtering on, and maybe on a high setting? That's usually the only time that I get the "defects" that you describe.

Make sure you set Vuescan to the advanced mode, and in "Filter" turn of the dust removal (not sure what it was called... infrared dust removal maybe?).

I have a Minolta Dimage Multi Pro, which is similar to the Dimage 5400, and it works quite well.

I would agree with the Dr.

Dust removal filter does that to Silver based B/W. I also have the Multi Pro.

Cheers - John

 

[foolproof]

Happens to both b/w scans and colour neg in either auto jpeg/tiff or untouched raw dng. Will try get some sample crops up later so you can see exactly what I'm on about 😉

 

[foolproof]

Ok, I hope these two crops show what I mean (don't mind the colour, contrast etc) Hard to see the blur in this example but a bit of it is near the top right corner of the vuescan scan (more washed out of the two). Have seen much worse in other scans.

 

[brbo]

Hard to see at this size. Is it a blurry line through the whole length or a blurry circle that you notice?

I'm asking because I also have a MF scanner (Microtek 120tf) that doesn't work well in Vuescan. Vuescan (and Silverfast, too!) produces bands that are slightly blurred, but Mikrotek's Scanwizard doesn't have that problem (others with the same scanner reported the same thing). Again, your scans are really to small for me to see, so I'm probably imagining it, but I think I see a similar thing...

 

[kennylovrin]

I cant see any problem to be honest. Are you saying they are from two different scanner applications? To me it just looks like one is sharpened by the software and the other isn't.

 

[foolproof]

Hard to see at this size. Is it a blurry line through the whole length or a blurry circle that you notice?

I'm asking because I also have a MF scanner (Microtek 120tf) that doesn't work well in Vuescan. Vuescan (and Silverfast, too!) produces bands that are slightly blurred, but Mikrotek's Scanwizard doesn't have that problem (others with the same scanner reported the same thing). Again, your scans are really to small for me to see, so I'm probably imagining it, but I think I see a similar thing...

Yes, slight blurring blotch up in the top right hand corner. Plus whats with the horrible digitaly sharpened noise kind of look everywhere?

Here's another 2 400px crops of 3700px images (site wont let me attach bigger) but you can clearly see the line running across the middle. This kind of thing will appear in places as a line but also as a blotch of blur too.

 

[brbo]

This does look weird. There is something definitely going on in Vuescan - post scanning.

Double check the settings and make sure that you are calibrate the scanner in Vuescan prior scanning, 5400dpi, no multipass, no multiexposure, really scanning to RAW (5400dpi, 48bit tiff (not DNG), no raw size reduction, raw output with save, raw compression off, magnification 100%, printed size to scan size, no raw size reduction (1)). You should get a negative image, check if the lines are still there.

If the lines are still there, trash Vuescan preferences, get the latest Vuescan version and start over. If it doesn't help, contact the author of Vuescan.

 

[foolproof]

This does look weird. There is something definitely going on in Vuescan - post scanning.

Double check the settings and make sure that you are calibrate the scanner in Vuescan prior scanning, 5400dpi, no multipass, no multiexposure, really scanning to RAW (5400dpi, 48bit tiff (not DNG), no raw size reduction, raw output with save, raw compression off, magnification 100%, printed size to scan size, no raw size reduction (1)). You should get a negative image, check if the lines are still there.

If the lines are still there, trash Vuescan preferences, get the latest Vuescan version and start over. If it doesn't help, contact the author of Vuescan.

Will do 😉