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Comparison Epson Perfection V370 Photo vs HP ScanJet G4010

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Epson Perfection V370 Photo
HP ScanJet G4010
Epson Perfection V370 PhotoHP ScanJet G4010
from £137.58 
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from £499.99 
Outdated Product
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Product typeflatbedflatbed
FormatA4A4
Max. resolution4800x9600 dpi4800x9600 dpi
Technical specs
Optical elementCCDCCD
Max. scan area216х297 mm216x311 mm
Optical density3.2 D
Colour depth (int.)48 bit96 bit
Colour depth (ext.)48 bit96 bit
Shades of grey256256
Slide modulebuilt-inbuilt-in
Data transfer
USB
USB
General
Power sourcemains poweredmains powered
Power consumption12 W25 W
Dimensions280x430x67 mm303x508x98 mm
Weight2.8 kg4.4 kg
Added to E-Catalognovember 2012january 2008

Max. scan area

The maximum image size that the scanner can process at one time, both horizontally and vertically. You should pay attention to this parameter if you need the exact dimensions of the scanner's working area, down to a millimetre: although standard formats are used to designate these dimensions (see "Format"), in fact the dimensions may differ from them.

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.

Colour depth (int.)

Under the internal colour depth is meant the number of shades of the image that the scanner itself can recognize; it should not be confused with external depth, which is the amount of hue transmitted to the computer (see below). Colour depth is expressed as the number of bits of information used to encode data about each colour. The total number of colour shades in this case is 2 to the power of n, where n is the colour depth. So, a 24-bit scanner recognizes 16.7 million colours — which is more than one and a half times more than the human eye, and quite enough for simple everyday tasks. In more advanced professional models, colour depth can reach 96 bits. Although the characteristics of the image transmitted to the computer are described by the external colour depth (which can be less than the internal colour depth), the internal depth, however, also affects its quality: other things being equal, a scanner with a higher internal depth provides more accurate colour reproduction.

Colour depth (ext.)

External colour depth characterizes the maximum possible number of colour shades in the image transmitted by the scanner to the computer. A depth of 24 bits is considered quite enough for non-professional tasks, in more advanced models this parameter can reach 96 bits. For details on colour depths and their relationship, see "Colour Depth (Int.)"

Power consumption

The maximum power consumed by the scanner during operation. The higher the power, the more energy the scanner consumes, but this only applies to the scanning process itself — in standby mode, power consumption is negligible. And even at the peak in most models, the power is so low that in fact this parameter has practically no effect on electricity bills and is more of an auxiliary value (for example, it is used to calculate the total power of devices connected to an uninterruptible power supply).
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