Use the highest setting. 1680 x 1050.
No, the screen is a LED display.
An iMac is a computer, while an LED Cinema Display is just a beautiful screen. You still need attach a computer to it. Most people who buy a cinema display connect their macbooks or a mac mini or mac pro.
As of this writing, the 3.5 GHz 27-inch iMac (with a 5K display) retails for $2,499 USD.
Yes, but you will need a Mini Display to HDMI adapter.1Connect the mini display side of your mini-display-to-HDMI adapter to the back of your iMac.2Connect the other side of the mini display cord to the corresponding port in your adapter box.3Connect your HDMI cable from your Xbox HDMI port to the HDMI port of your adapter.4Plug in the adapter box and turn on any power buttons, if applicable. Turn on the Xbox.5Press "Command-F2" to switch from the iMac display mode to the Xbox display mode. Your Xbox interface should now appear on your iMac screen.There are multiple mini-display-to-HDMI adapter boxes on the market; before you purchase one, check any available reviews to make sure it is compatible with the iMac, or use Apple's "About Mini DisplayPort to HDMI Adapters" page to find out if the adapter you want to use will work with your iMac.
On the iMac wireless keyboard it is the second key from the left, on the very top of the keyboard. You can also open System Preferences and then click Display. There on the Display tab you will see a brightness control slider.
Open System Preferences. Now click Display. Click the display tab and check "Best for built in display".
That would depend on what you consider to be "high-resolution". Though, the 24" iMac supports resolutions up to 1920 by 1200 pixels.
A person can use target display mode on a 2012 iMac and a miniport cable by connecting through Thunderbolt or Firewire. This will allow a person the ability to connect their laptop to the larger screen.
no the display port is an output so that would just connect two outputs together
If you need a computer buy an iMac if you only need a screen to add to your computer buy a Cinema Display. It is impossible to make a direct comparison between a screen and a computer.
No, you can only get that discount on a new iMac not a refurbished iMac.
There is no "iMac Air".