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Comparison Epson Perfection V39 vs Epson Perfection V19

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Epson Perfection V39
Epson Perfection V19
Epson Perfection V39Epson Perfection V19
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Scanning speed: 10 sec (color, A4, 300 dpi).
Scanning speed: 10 sec (color, A4, 300 dpi).
Product typeflatbedflatbed
FormatA4A4
Max. resolution4800x4800 dpi4800x4800 dpi
Technical specs
Optical elementCISCIS
Max. scan area216х297 mm216х297 mm
Optical density3.2 D
Colour depth (int.)48 bit48 bit
Colour depth (ext.)24 bit24 bit
Shades of grey256256
Mono scanning10 ppm
Colour scanning10 ppm
Slide moduleis absentis absent
Data transfer
USB /2.0 Hi-Speed/
USB
General
Power sourcemains powereduSB powered
Power consumption2.5 W2.5 W
Dimensions250x365x38 mm249x364x39 mm
Weight1.54 kg1.54 kg
Added to E-Catalogaugust 2022june 2015

Optical density

The maximum optical density of a dark image that the scanner can distinguish from pure black. Optical density characterizes how much of the light falling on the image was reflected (for opaque images) or transmitted (for transparent). The higher the optical density, the less light the object reflects / transmits. Accordingly, the higher the optical density of the scanner, the higher its sensitivity and the better it is suitable for working with dark images.

Mono scanning

The black and white scanning speed provided by the device. Usually, the maximum processing speed for an A4 sheet is indicated, i.e. speed at the lowest resolution. In fact, the speed is usually lower and depends on both the resolution and the size of the original material. The higher the scanning speed, the more convenient it is to work with the scanner; pay special attention to this parameter if you plan to work with numerous black and white images.

Colour scanning

Colour scanning speed provided by the device. In fact, it depends on the selected resolution, colour depth and original dimensions; the characteristics most often indicate the speed for an A4 sheet at the minimum resolution and colour depth, i.e. maximum possible speed. If you only need to scan one or more sheets from time to time, high speed is not too critical, but for working with a large amount of materials, you should look for fast models.

Power source

— From the network. The most common option is to connect to a conventional 230 V power supply. This power supply provides enough power to operate any, even the fastest and most performant scanners. Its disadvantage is, in fact, the need for an electrical network.

— From USB. Powered via USB port — the same through which it connects to the computer. This significantly increases the battery life of the scanner — in particular, it can be used with a laptop in places where there is no access to a 230 V network, which is especially important for portable models (see "Portable Design"). On the other hand, the performance of such devices is usually low, and the power of the USB port is not always enough for power supply (which is especially true when using USB hubs).

— Autonomous. Power supply of the scanner from its own batteries (accumulator or replaceable batteries). Such models are as autonomous as possible, because do not require a power cord to operate, and many of them are able to act as separate devices without being connected to a PC at all. Their disadvantage is the risk of switching off at the most inopportune moment due to the exhaustion of the charge — then you have to either change the batteries (which at least requires fresh ones) or recharge the battery (which takes time).
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Epson Perfection V39 often compared
Epson Perfection V19 often compared