Usually completed after globalized adjustments (such as color correction), retouching is the polishing of an image. Once the white balance, cropping and color profile has been created a retoucher will focus on adjusting other elements of an image

You can use the Photos adjustment tools to easily change a photo’s light and color.  You can also reveal detailed controls that let you fine-tune each adjustment, including exposure, highlights and shadows, brightness, and contrast

Simply put, a PSD is a Photoshop design file. Technically, it stands for Photoshop Document, which is a proprietary file type from Adobe. Adobe’s Photoshop is the software most widely used for photo album design and works best for the design-to-code process.

PS stands for in-plane switching, a type of LED (a form of LCD) display panel technology. IPS panels are characterized as having the best color and viewing angles among the other main types of display panels, TN (twisted nematic) and VA (vertical alignment). However, IPS panels are also the most expensive of the three.