Axis 2110 User's Guide download pdf (Page 30)

Choosing Your Application AXIS 2110 User’s Manual

Picture frequency for Networking Applications

When used in a TCP/IP networking environment, the AXIS 2110 delivers up to 15

images/second; where the actual image frequency is typically limited by:

• your browser/computer

•the image size

• the lighting conditions at the point of installation.

• the available network bandwidth

• complexity of detail and color variation within the image

Image Compression Ratios

The file size of a JPEG-compressed image depends upon the actual content of the image.

Images containing a lot of detail will generate larger files. Image quality is controlled by

the level of compression; high compression yields small files, while low compression

maintains higher image quality at the expense of larger files. The table below contains

average file sizes in kilobytes, derived from real-life tests:

Note: Using a modern computer will avoid introducing any unnecessary bottleneck when

viewing the images.

Lighting Conditions

Just like any camera, the shutter time of the AXIS

2110 increases in low light conditions to guarantee

optimal image quality.

The actual frame rate for your images is affected by

the prevailing light conditions in your application

environment. Although the AXIS 2110 will produce

good quality images right down to 3 Lux, local

lighting should ideally be stable at 40 Lux or more to

achieve optimal image frequency. Consequently, you

can expect a reduced frame rate under low light

conditions in your application environment, as

shown in the diagram (right).

Typical File Sizes (kbytes)

Resolution

At lowest

compression

At low

compression

At medium

compression

At high

compression

640 x 480 250 kb 20 kb 13 kb 8 kb

320 x 240 70 kb 8 kb 5 kb 3 kb

Images / sec.

Lux

light

better frame

ate

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Axis 2110 User's Guide Page 30

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