CZUR ET24 Pro book scanner review

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CZUR ET24 Pro: 30-second review

Most people think of scanners as that quaint mechanism that looks like an old photocopier on the printer, or an independent flatbed ideal for capturing receipts.

Scanning books is a critical task for museums and archives where many people wish to see and read rare books, but the process is often detrimental to the documents.

The CZUR ET24 Pro is a camera solution designed specifically to cope with books where the scanning surface is likely to be curved, and the captured data will need to be flattened to provide the best viewing experience for others.

It features a 24MP camera mounted on a stand with its own lighting source and the electronics needed to profile the curve of the pages, and pass that information on to the scanning software to make appropriate adjustments.

The workflow allows the operator to turn the pages, hold them down and then trigger a capture using the foot pedal, hand switch or software-controlled, before moving on to the next page.

In addition to auto-flatten functionality, the software can also de-skew and includes OCR that can understand 180 different languages.

The CZUR ET24 Pro can scan any documents up to A3 size (16.5” x 11.7”), making it suitable for the majority of book scanning projects. CZUR makes a series of these devices, with the ET24 Pro being a mid-range option; it also makes cheaper, lower-resolution ET16 Plus and ET18 Pro models, in addition to the larger ET25 Pro and ET Max variants.

The only significant caveat with this device is the price, with the asking price being $649 for this model. That probably prices this hardware out for anyone who just wants to capture a single book, but for those who do this job regularly, it might be a solid investment.

CZUR ET24 Pro

(Image credit: Mark Pickavance)

Amazon is $649 in the USA, in the UK it’s £649 at Amazon.co.uk, and €629 in Europe. Though the Europeans have a voucher deal running that reduced that to €534, making it the cheapest place to get it via Amazon.

The AliExpress pricing is better for the UK at £507.07, but for both the EU and USA customers, it’s more expensive to get it from AliExpress than it is from Amazon.

Book scanning appears to be a subject that CZUR has effectively ring-fenced, since many competitor products are rebadged versions of its products. There are hand scanners and a few cheaper versions of the same concept, but CZUR has a wide range of options progressing from small portal solutions to larger professional installations.

Because there aren’t many competitors, the price is the price, and only the potential purchaser can determine if that represents value for money.

For what hardware is in this equipment, it seems expensive to this reviewer, but for those scanning books every day, it might seem like a bargain.

CZUR ET24 Pro

(Image credit: Mark Pickavance)

CZUR ET24 Pro: Specs

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Feature	Specification
Product Type	Smart Book & Document Scanner
Camera Sensor	CMOS, 24 Megapixels
Resolution	5696 x 4272 pixels (320 DPI default)
Max Scan Area	?A3 (420 x 297 mm / 16.5 x 11.7 in); Max: 480 x 360 mm (18.89 x 14.17 in)
Max Scan Thickness	35 mm (A3), 50 mm (A4)
Scan Speed	1.5 seconds per page (single/dual pages)
Image Format	JPG
Export Formats	JPG, PDF, Searchable PDF, Word, Excel, TIFF
Color Depth	24 bits
Video Streaming	MJPG
Preview	PC Visual Presenter: 3072 x 1728 @12fps; Scanning: 1536 x 1152 @20fps
Light Source	Built-in top LED and side lights
Focus Mode	Fixed focus
Trigger Methods	Device control, software, hand button, foot pedal
System Support	Windows XP/7/8/10/11 (32/64-bit), macOS 10.11+, Linux Ubuntu 16.04+
Processor	Dual-core OpenRISC 32-bit
Laser Assistance	3 laser rays
Memory	1Gbit DDR
HDMI Output	HDMI 1.4 (Visual Presenter: 1920x1080P 60Hz/50Hz, 1280x720P 60Hz/50Hz, etc.)
Display	2.4″ LCD, 4:3, 320×240
USB	USB 2.0 High-Speed
Power	Input: AC 100-240V 50/60Hz; Output: DC 9V/1.5A-2A
OCR	ABBYY OCR, supports 180+ languages
Software Features	Flattening curve, smart paging, tilt correction, auto-cropping, fingerprint removal, background purifying, colour modes, auto/manual scan, watermark, screen/video recording, combine sides, blank page detection
Optical Features	EFL: 4.55mm, BFL: 3.4mm, F/NO: 4.5, IR Cut: 650±10nm, Field of View: 82°, Distortion:

CZUR ET24 Pro: Design

Mostly plastic
Built-for purpose
Plenty of options

I was initially somewhat disappointed with this device, or rather, specifically the build quality, as it is almost entirely made of relatively thin plastic.

Given the L-shaped form factor, I at least expected the base to be mostly metal to counteract the weight of the top arm that holds the camera. It’s not, and therefore, the whole construction isn’t far from toppling over if something or someone accidentally collides with it.

That said, it comes mostly in one piece, and the only feature that requires attaching other than cables is the side lighting component that is roughly halfway up from the base. This is attached using magnets, and again, they needed to be stronger magnets to avoid this part falling if knocked.

The base has four buttons and connections on the rear for attaching the various triggers, an included power supply and, on this model, a display via HDMI.

If you attach all the cables provided, including the foot pedal and hand button, there could be five cables coming out of the scanner, which is a bit messy.

One annoyance is that this uses generally old technology. The USB cable to connect it to a computer is Type-A, so that’s a pain for anyone with a modern laptop which has only USB-C, and the Type-A is USB 2.0, making for longer file transfers than are possible with better connectivity. Not that the scanned files it captures are huge, but USB has got better for many reasons with each subsequent release.

There is another way to use the scanner: use it for presentations and display what it sees via the HDMI output. This sounds super-useful until you realise that the maximum resolution supported by the HDMI is 1080p, whereas the captures are 5696 x 4272 pixels or nearly six times bigger. You can zoom the display to see more detail from the capture, but why this isn’t in 4K is a mystery.

CZUR ET24 Pro — (Image credit: Mark Pickavance)

Another curiosity is that on top of the scanner, where the camera is supported, is a small colour LCD display, which shows what the camera is currently seeing. If you are sitting in front of the scanner, unless you are remarkably tall, you won’t be able to see the display unless you are standing up. That might be great for posture, but the idea of scanning a book while standing up seems mildly bonkers for those in the later stages of life.

There is an easy fix for this would be that the display was hinged, just like the ones that are on most 3D printers, and this would have worked for both standing and sitting operations. This evidently was either never considered by the designers or they rejected it on a cost basis. Whatever the reason, it was an obvious omission that needs to be rectified.

Along with the scanner and its cables, CZUR also provides two ‘finger cots’, curious devices I’ll discuss in the user experience section. And, also a CD with the software on it. No, that’s not a bit of my infamously odd UK humour, this scanner came with a CD, something I’ve not seen with a tech product in many a year.

Why wasn’t it a cheap USB flash drive? I’ve no idea, but I take it that CZUR thinks that the market for these devices is those still using technology from the end of the previous century.

And, as if to underline this point in neon marker, the software is provided in a version that runs on Windows XP, disturbingly.

To be clear, you can download the software and the manuals from the CZUR website if you can’t find a PC with an optical drive mounted.

CZUR ET24 Pro: Features

OpenRISC 32-bit
1Gbit DDR?
Lasers?

CZUR describes the processor in the scanner as being a dual-core OpenRISC 32-bit, which covers a great many possible processors, none of which is especially impressive. The specifications also tell us that it has 1Gbit DDR. I find that hard to believe, because original DDR isn’t made these days, and also that would be 128MB/s of memory, which seems implausibly small for the job.

Perhaps those were typos, and it has 1GB of maybe DDR4, but I do wonder why they didn’t just take off-the-shelf phone electronics with their 64-bit ARM SoCs rather than building a complete bespoke platform to do the same job as phones do literally for pennies. And if they had taken that path, the scanner could have been wireless-capable and also have had USB-C inherently.

Another head-scratcher in the specs is that it indicates that the scanner has three lasers, which I presume are used to calculate the curve of the pages so they can be accurately flattened once scanned. My problem with this is that there is no evidence in use that there are any lasers, at least not ones that produce visible light frequencies.

I suspect this is another Chinese-made product where infrared and lasers are confused, as I can’t see anyone in the valuable book trade wanting their most valuable assets subjected to laser light if they could help it.

It should be noted that the profiling of the page has some significant limitations in the thickness of the book that can be scanned. The depth that can be adjusted for is 35 mm at A3 and 50 mm at A4. If your book is thicker than that, or you don’t hold it down to flatten it as much as possible, then you will end up with less than perfect scans.

Features: ★★★⯪☆

CZUR ET24 Pro: User experience

Define a workspace
Tons of features
Lacks a clearly defined workflow

Setting up this scanner doesn’t just involve getting it out of the box, plugging it all together and installing the software, as there are some subtle nuances to the installation that I wasn’t aware of.

For starters, there is a black neoprene mat that comes with the scanner that shows exactly the area that the camera is focused on, and it has a notch cut on one side, which is where the scanner must be precisely placed. Failure to do this accurately will impact the scanning process, so make sure it’s right.

One thing that I only realised after a few scans was that no objects other than the book and your hands can be inside the border of the mat, and that includes the cabling. If it crosses the threshold of the mat, the software will think it’s something to scan, and that will throw all sorts of things out of whack.

The software, which I’ll get to shortly, is designed to realise what fingers look like and will remove them from the processed image if you are using them to hold the pages down. However, also included are two yellow ‘finger cots’, which are devices to perform the same page-holding function, but are easier for the software to erase. They also provide a means to touch the book without adding skin oils to the paper, which is also useful for rare publications.

The biggest issue I had in creating a suitable workspace for this device was the amount of space it required. To avoid cables crossing the mat meant the laptop needed to be well away from the scanner, and my 120cm long pine table was probably the minimum size that is workable. Anything smaller and the computer will be too close to the scanning mat, making the scanning exercise more challenging. It would probably work better with a desktop system under the desk, although where you would put the mouse and keyboard is debatable.

In a previous role, I worked with document scanners, and it was a two-person operation: one handled the scanner and documents, while the other operated the computer.

That might seem people-intensive, but it’s significantly more efficient than having one person do the whole thing by themselves.

In my experience, working alone, this process turned out to be more complex than I’d originally anticipated. This was mostly down to the need to use both hands to hold down the book and then needing a third hand or a foot to trigger the scanning process.

There is an ‘Auto-scan’ function that can detect page turns, but it’s easy to make a slight adjustment with the finger cots and trigger another scan of a page you have already captured. Facing pages can be captured as left and right images or as a combined, flattened output, which allows some leeway in cropping and adjusting how the captures are processed on each side.

CZUR ET24 Pro software interface — (Image credit: Mark Pickavance)

There are, however, a few things missing that I’d have liked to have seen. Having worked with a repository containing millions of images, a golden no-no is having images with the same name, since this can lead to overwriting a file with something else.

What this software doesn’t offer is the unique label that is never reused and added to every filename. You can create daily or project-driven folders, but this system would be massively advantaged if the capture files were integrated with a database, possibly detailing who scanned them, what adjustments have been applied and other information, such as an index code for the book.

While it can scan barcodes present on the book, it doesn’t use the same logic to identify page numbers that can then be inserted automatically into the file naming model. That wouldn’t be difficult to achieve, and could make a file collection that is correctly sorted by page, irrespective of the order it was scanned.

What is more comprehensive are the options for exporting the files in PDF, Tiff and various other formats.

My assessment of the software is that it isn’t exactly intuitive, but I did eventually locate the features I was looking for. While I was reviewing the scanner, it was updated, suggesting that it does get improved on some basis, which is gratifying.

What it lacks is an inherent workflow, where a book goes in one end and scanned digital data comes out of the other end.

CZUR ET24 Pro scans — (Image credit: Mark Pickavance)

User experience: ★★★⯪☆

CZUR ET24 Pro: Final verdict

Typically, with me, first impressions play a big part, and the amount of plastic in this product I found off-putting out of the box. However, after I’d used it, my opinion of this device subtly improved, because in the end of the day it does what CZUR claims for it.

I still think it needs a heavier base to counteract the arm, and a swivel on the display to make it easier to see when sat in front, but the workflow is practical, and it’s possible to scan even a large book in an afternoon.

Does this justify the price? Probably not, but given the minimal product options that anyone wanting to scan a book has, that might be something you are forced to deal with.

I should mention before I get complaints that there are potential legal pitfalls to copying books protected by copyright, and that those using devices like the CZUR 24 Pro need to be aware of where those limitations exist in their specific geography.

This equipment can scan any book or publication, but doing so may not be protected under the law. But, if you have publications you can justify digitising, the CZUR 24 Pro will do it reasonably efficiently with a bit of training.

Final score: ★★★★☆

Should you buy a CZUR ET24 Pro?

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Value	Seems expensive, till you realise the limited alternatives	4 / 5
Design	Simple but effective design that is quiet and attractive	4 / 5
Features	Odd hardware choices	3 / 5
User experience	Lots of features but lacks straightforward workflow	4 /5
Overall	Does whats required, but needs training	4 / 5