Scanning Resolution

[prairieson]

Is there a setting that I'm missing? I'd like to be able to set a default scanning resolution other than 100 DPI. I have hundreds of photos that I'm in the process of scanning at 600 DPI, and it would certainly be quicker not to have to reset the scan resolution for each scan.

[Bhikkhu Pesala]

I suspect that you have to look at your scanner driver to change the default scanning resolution. Nothing to do with IrfanView.

[prairieson]

My scanner driver and software are defaulted at 600 DPI.

[Bhikkhu Pesala]

Does the number of pixels in the scanned image match the 600 dpi setting? It is the pixel count that matters, not the image DPI.
What image format are you saving the scans in?

[prairieson]

Yes, the image matches the 600 dpi settings. The pixel count when scanning is controlled by the dpi setting. That's not the issue. I'd like the DPI (resolution) setting in IV to default to 600, not 100. I save everything as a .png, That's also not the issue, the format is moot until I save.

[prairieson]

This is what I see when I look at scan resolution settings in Advanced Settings.. I would like to change the 100 to 600 permanently.

[j7n]

The interface looks quite simplified. I think it is provided by Windows. Try to get to the "advanced" dialog that comes with the scanner. Usually you get 2 options as an acquisition source: TWAIN and WIA. And in Twain you have more precision controls.

[Bhikkhu Pesala]

I do not understand. Your scanner driver is clearly set to 100 DPI, so a 6" x 4" photo print should scan to 600 x 400 pixels, but you're telling us that you would get 3,600 x 2,400 pixels when scanning something of that size. If you set the advanced options to 600 DPI, does the driver forget its settings?

[prairieson]

Yes, I would get 3600 x 2400 when I change the setting to 600 DPI, which is what I want. But I have to change it from 100 DPI to 600 DPI every time I scan. I want to make that setting default to 600 DPI, so I won't have to change it every time. The driver doesn't forget its settings, IV does. Every possible setting outside IV currently defaults to 600 DPI.

[prairieson]

It would appear that the setting is being generated somewhere between the driver and IV. It appears there is no solution. Thanks for your time.

[Bhikkhu Pesala]

I restored your topic. Others may have a solution, or may be able to confirm the issue with other scanners.

[Bhikkhu Pesala]

If I scan as Colour Photo with my WIA driver, then I also get 100 dpi, but if I use the Custom Settings of 600 dpi, that is what I get.