CanoScan LiDE 400 How to scan at 4800 and 19200 dpi

[AlexKnox]

Canon LiDE 400 - utilizing Scanning Resolution Options

OS: Windows 10 and 11

Hello Canon forum members,
I recently bought the scanner Canon LiDE 400.

1) In the specification from Canon it states:
OPTICAL resolution 4800 × 4800 dpi (in accordance with the image). In the U Scan Utility, maximum is only 600 dpi. In ScanGear the maximum is only 1200 dpi found.

How do you access and scan in the OPTICAL resolution 4800 x 4800 dpi?

2) Moreover, in the specification from Canon it also states:
Selectable resolution 19200 dpi. How do you utilize and access 19200 dpi?

As always, thank you for your cooperation!

Sincerely Your,
Alex

[shadowsports]

Greetings,

I know it's deceiving but....  Click in the resolution field and type in the resolution.  😉

[AlexKnox]

Hello shadowsports, Every forum member, 

I appreciate your answer and cooperation.

I did not find it possible to perform this act in the main menu in Canon Scanning Utility. However found your proposition in the ScanGear button. Is this where you are meant to go?

***

Every forum member:

Then I received, in spite of the fact that I am an advanced Digital Photographer, the following ambiguous message. Does anyone have an idea how to interpret this message and how to act?

Appreciate your cooperation

Sincerely yours,
Alex

[shadowsports]

Greetings,

Yes.  I'm sorry I wasn't more descriptive.  That's exactly where it is.  🙂

[AlexKnox]

Greetings in Return!
It's okay. You showed me the compass direction anyway. Appreciate it. Found it.

Everyone,
I wondering about the two latest pictures: How should they interpreted and operated?

Sincerely yours,

[shadowsports]

Greetings,

Do be mindful of the data size when bumping the resolution up. The files can become quite large.  This is certainly helpful if you were printing large format or on a plotter, etc.

[AlexKnox]

Greetings,

Yes, I noticed that when I tried it out before. As friend of digital photo and processing I am used to files of all sizes. 🙂

However, what does the following mean in practice. That is what I wish to verify and how to enter:

Sincerely yours,

[shadowsports · Accepted solution]

Greetings,

Scanners have two types of capability.  

Optical and Interpolated.  The maximum optical resolution is limited by the physical characteristics of the sensor.  The interpolated resolution is enhanced by software, but as the pixel density increases the output size of the scan decreases based on system resources and memory.  This was why I mentioned being mindful of your resolution. 

If you select the maximum interpolated resolution, you will need to decrease the size of your output accordingly.  You can select a smaller scannable area (crop), decrease the size of your output (Pixel x Pixel) or instead reduce the DPI you capture in the scan.

This may help with the concept.

An image with dimensions of 10208 x 14302 pixels corresponds to the following physical sizes, depending on the print resolution (PPI - Pixels Per Inch): 

High Quality Print (300 PPI): Approx. 34.0 x 47.7 inches (\(10208/300\times 14302/300\)).

Standard Printing (200-240 PPI): Approx. 42-51 inches on the short side, suitable for very large posters or banners.

Screen Resolution (96 PPI): Approx. 106.3 x 149.0 inches (\(10208/96\times 14302/96\)

PPI and DPI are different. PPI refers to the size of the image in pixels on a screen. DPI refers to the number of dots per in that appear on paper.

This should get you going. 😉

[Patrick]

Hi AlexKnox,

When the data size exceeds a certain size, the value appears in red. In that case, a warning message appears when you click Scan. It is recommended that you adjust the settings to reduce Data Size. To continue, scan in whole image view. (ScanGear > Advanced Mode Tab > Output Settings)

In your example, the resulting scan would be over 48 gigabytes, which is larger than ScanGear allows.

Did this answer your question? If so, please click the Accept as Solution button below so that others may find the answer as well.

[AlexKnox]

Appreciate your answers much shadowsports and Patrick. I will read and test your suggestions. 🙏