Q: Is it possible to adjust the inbuilt camera settings MBA?

If you are using a projector or external display to share camera content, then

display settings could be used to modify the visual aspect of content...

• Using a camera with your Mac -- Apple Support

The camera has a software component in the OS X. Early Apple computers

had an iSight camera either built-in or as an external accessory; I have an

first edition MacBook 13-inch 1.83GHz coreduo that has an iSight built-in.

And a later model computer with external Apple Cinema aluminum display

with iSight original FW camera that sits on top (and is removable) of display.

From what I've seen, the software compatible with the camera is (about) the

only way to modify images. The article linked above suggests some of those.

There may be other third-party software that could use the built-in or external

camera; some may use FireWire if those ports exist, for video or other. USB

is one of the common standards for an external camera.

http://www.apple.com/support/mac-apps/facetime/

Third-party software is likely the way to go, if not the only way for live video.

However your OS X is newer than mine, so there may be more settings.

• iGlasses for Mac - effects and adjustments for your webcam, isight, facetime camera

http://www.ecamm.com/mac/iglasses/

• Webcam Settings (app) on Mac App Store:

https://itunes.apple.com/us/app/webcam-settings/id533696630?mt=12

Did you have a specific kind of presentation in mind to make use of the camera?

In some instances, the external camera will give greater range of purpose.

Good luck in any event...!