Canon WFT-E1 Manuale Utente Scaricare il pdf (Pagina 58)

system. The ramiﬁcations of these two modes are covered in more detail over

the following paragraphs.

As noted above, the primary problem with infrastructure networks is

that you need to install an access point/router/base station within proximity

of both the computer and camera. Since most of these devices do not have

batteries the other issue that may come up is that you must have access

to AC power for the device. As such, this type of network is generally

most appropriate for studio or event shooters that will be working with their

transmitter in a ﬁxed location where they will have access to the necessary

resources. In this situation, it is easy to install a ﬁxed wireless network that

you will be able to connect to whenever you are working.

For users who will be using their wireless transmitter out in the ﬁeld

and cannot set up a ﬁxed installation, an ad-hoc network may be a better

ﬁt. Since this mode allows the camera and laptop to communicate with one

another directly, you aren’t reliant on any external resources and can use the

system wherever you would like. For photographers who are working out in

the ﬁeld and don’t always have control over the environment in which they

are working, this provides needed ﬂexibility to ensure the system will work

regardless of location. As mentioned above, setting up an ad-hoc network

can be more complicated - however the details will be covered in the following

sections.

B.2 Performance Ramiﬁcations

One issue with the current crop of wireless transmitters is that they are

limited to operating at the slower IEEE802.11b speeds when operating in

ad-hoc mode. For photographers that need to work in the ﬁeld but need

more performance than ad-hoc can provide the only option is to look into

portable access points. Fortunately, there are a few products on the market

that can help to deal with this situation and allow the desired usage model.

D-Link’s DWL-G730AP pocket router, for instance, can draw its power from

the USB ports on your laptop (and in turn from its battery) instead of being

plugged in. Similarly, Zyxel’s G220 and AG-225H USB wireless adapters

have an optional soft-AP mode that allow your computer to behave as an

access point and thus communicate with the camera in the infrastructure

mode.

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Canon WFT-E1 Manuale Utente Pagina 58