Spyder 5 pro

The Datacolor Spyder5 Pro is a colorimeter that can precisely measure the color response of your LCD screen. If you use multiple screens, this is a must-have to ensure consistency between monitors. If you are into video work, photoshop or photo editing in general, this helps ensure that when you post a photo, what others see is consistent with what you edited on your monitor. Definitely read up on why these are recommended. I upgraded to a high-end model from a different manufacturer, so this one is for sale!
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This is your next camera!