Play NYT Connections Puzzle #734 Fri, May 9

Find groups of four related words Need hints?

Solve NYT Connections puzzle #734 - Group 16 words into 4 categories: BRIGHTNESS, COLOR, CONTRAST, TINT, DIM, FAINT, REMOTE, VAGUE, DIFFERENCE, PRODUCT, QUOTIENT, SUM, BLIND, DRAPE, SHADE, SHUTTER.