A highly popular and trusted webcam service for the iMac (more specifically the operating system OSX) is iChat. It was developed by Apple and thus comes pre-installed in most Apple computers (iMacs) as standard.
The effects are provided by the software being used by the webcam. With the right software any webcam will produce special effects
The webcam on a Mac is controlled by the software using it. Launch Photobooth, Facetime, iChat, iMovie or any other software that requires the camera and it will be activated.
Applications>Photo Booth. The Photo Booth app will allow you to take pictures and gives the option to use filters also.
Because I have a mac..
It depends on the brand of webcam, whether it is built in or not, and if you are using Mac, Windows, Linux, etc.
you go into settings on ur MSN and find webcam and chose the type of webcam you have.
The most popular menu items at the new mac and cheese restaurant in town are the classic mac and cheese, truffle mac and cheese, and bacon mac and cheese.
mac or PC
To use a Logitech (or many other USB)) webcaminstall the Macam software which will enable the use of the webcam with Mac OS X. (See links below)
A good messenger service to be used for mac would be MSN Messenger or Microsoft Messenger for MAC. There are several other services that you could use for MAC depending on your personal preferences and needs.
If you mean the abomination used on Dell computers then it is, thankfully, not available for the Mac.
Logitech is a good brand of webcam that can be used with a Mac computer. Logitech makes high quality products for both Mac and Windows and it should be easy to find the brand on all the popular sites such as Amazon.