Logitech's SetPoint software is an additional tool which a G7 user shouldn't pass up. There are three default settings for sensitivity on the G7, but when SetPoint is installed on your computer, you have a total of five sensitivity settings.
SetPoint Advanced Game Settings
The most impressive features of the settings options, are being able to adjust the dpi numbers in increments as small as 50dpi. This allows for very specific and defined sensitivities. As you may know already, every PC game is different and requires fine-tuning of the mouse.
SetPoint Control Panel
The following is an animated gif of the four main windows of the SetPoint Control Panel (SCP). As you can see, there is a lot of customization available to you.