Silver Fast Ai talkes much longer to scan

[June]

I have recently upgraded to Photoshop CS2 and to SilverFast Ai. When I use the same resolution (2400) I takes me much much longer to scan an image. I scan black and white negatives on an Epson 1280. Thanks.

Amendment to my message of one minute ago.
I mistakenly identified my scanner. It is the Epson 4870 flatbed and I scan black and white medium format negatives.

[RAG]

June,

What version of SilverFast are you using?

[June]

The version of SilverFast Ai is 6.4.3r9.

Thankyou.

[RAG]

Are you by chance using a larger quality factor than before? The other question that comes to mind is, are you up-scaling the image larger than 100%?

I did not find that my scans slowed down after the upgrade, so that is why I?m curious if some settings changed.

[Kul]

After an update from r8 to r9 (Reflecta Digitdia 4000) the scanning time for one slide changed from about 3 to 4 minutes (iSRD enabled) to about 8 minutes, mostly due to computing iSRD.

In addition, the results for iSRD were even worse compared to r8.

I returned to r8.

Kul

[June]

I think the solution lies in the number of passes in the scanning. I had it set to 4 passes inadvertently. Now I have it at 1 pass. But, I'm wondering if it should be at more and how advantageous is it to make multiple pass scans? June

[RAG]

June,

In general one thing you will find is that Multi-pass scanning helps to bring out more detail in the shadows. I recommend doing some comparison scans and if you do not notice an improvement then stick with single pass scans.