Research the causes of related medical symptoms such as: 1  Eye. 2  Eye symptoms (5412 causes) 3  Eye disease. 4  Eye disorder. 5  Eye problem (5412 causes) 6  Eye pain (475 causes) 7  Itch (1068 causes) 8  more symptoms...Â».
How to read the Histogram. A histogram is a graphical representation of the pixels exposed in your image. The left side of the graph represents the blacks or shadows, the right side represents the highlights or bright areas and the middle section is mid-tones (middle or 18% grey).
How to create a Histogram Chart. 1  Highlight the frequency data table (cells M4:P8) 2  From the Insert tab of the ribbon select Column > 2-D column. You should end up with something like this. 3  Remove the Bin data from the chart. Select the blue bin data columns (just click on one of the columns) and press the delete key to delete them.