Polariod Sprint Scan 45 ultra problems

[AbsolutelyN]

Recently I acquired a SprintScan 45 ultra and am having trouble scanning colour negatives. It produces banding, both horizontally and vertically. Transparencies scan better but the artefacts are still there, just less obvious. Unfortunately I rarely scan transparencies.

Does anyone have any ideas what may be wrong with the unit? Here is a sample scan from a 5x4 colour neg:

http://www.absolutely-nothing.co.uk/uploads/sprint-scan-45-ultra-1.jpg

Thankfully it was bought at a very low price. If possible I will be returning it but just thought I'd see if anyone has any ideas. Software is PolaColour Insight (but same results with VueScan) on Windows Vista.

Thoughts appreciated.

[James E Galvin]

Horizontal bands (along the long dimension) can be dirt on the mirrors. I had a lot of trouble with this, cleaning often. So I reversed the fan , covered it with paper from a vacuum cleaner bag as a filter (so the fan is blowing clean air in, instead of sucking dust in), taped over all of the little areas where dust could enter, and run the scanner upside down, so the mirrors face down so dust doesn't fall on them. MUCH better. Don't know about the vertical streaks.

[domaz]

Perhaps the stepper motor is going out and not stepping properly through the image. You might look inside and see how dirty it is- maybe a cleaning could help, but that would probably require some disassembly.

[AbsolutelyN]

Thanks for the suggestions, have now cleaned the mirror but it has made no difference unfortunately.

[Bob McCarthy]

Scanners have a calibration strip that is viewed by the sensor before scanning the film that can be dirty and will cause banding.

Another possibility is debris on the sensor itself

And lastly is software.

Scott Rosenbergh had a Sprintscan and went through the same issues as these, but this may be worse. As I recall, he had to do a thorough cleaning short of sending it in for a CLA.

He was working with the engineer at Vuescan to make the software work with the Sprintscan.

He should be in the members listing. If you don't get a response, let me know and I'll help you make contact.

bob

[Matus Kalisky]

I have experienced a similar problem with my Microtek F1 (only 1 strip though). As well as you the problem was nearly invisible with color slides, but quite prominent with negatives (color and BW). In my case the strip was only present only in 2 channels.

I contacted the Microtek and thy indeed indicated that this is most probably dirt somewhere in the optical path or in the calibration. Finally I have send the scanner to Microtek and it came back fine. Now - I have again another strip - I guess I will try to do more myself with pressurized air.

So - try to put the scanner apart a bit a try dusting everything you can. But try ti avoid physical contact with mirrors and lenses not to scratch them.

[jimmy3photo]

Can you even get support for an Ultra Scan any more? I have one and cant use it. Have to use a system 9 Mac to get it going...any thoughts?

[Bob McCarthy]

Call the vuescan guy. He was going to support the sprintscan I believe. This would allow a modern pc ( with scsi of course).

B

[Peter Mounier]

I have a Polaroid Sprintscan that was giving me trouble too. I was occasionally getting scan lines in the highlights, much like your image, but more often, I was getting a lot of color noise in the shadows. Yesterday it occurred to me that maybe the data was being corrupted in the transfer of data from the scanner to the computer. So I found the fattest scsi cable I had (for theoretically more efficient data transfer), cleaned the contacts on the scsi card and the cable, and plugged it in. Now it works flawlessly. So check your cable, or get a new one. That might help you too.
BTW, I use my Sprintscan with Vuescan, and a G4 Mac running OS 10.3.9. My Mac G5 Quad (Power PC) doesn't have a scsi card so I network the two macs via a VNC connection (http://en.wikipedia.org/wiki/Virtual_Network_Computing) and (http://sourceforge.net/projects/cotvnc/) and interact with it from my G5.

Peter

[AbsolutelyN]

Thanks for all the input. Cleaning the mirrors seems to have cleared the horizontal bands, but the vertical bands remain. Rather stuck on the vertical bands perhaps indicating stepper motor issues. I'm assured the scanner was only used a handful of times but has been in storage for years. I use the same scsii cable/card with a drum scanner with no issues, will try a different one though.

[paulMD]

Apologies for the 6month thread necro, but people might still be searching for a fix for this issue. This can be caused by interpolation in the scanner as it "throws away" lines when scanning at less than maximum resolution. Always scan at 2571 DPI and resize in software later.

I sent you a PM, I want to clean my SS45U and I'd like any hints or tips you might have.