Optical Adjustment
Luke Jones (via iOS Dev Weekly):
In my early days as a designer, I relied on Photoshop or CSS to tell me whether something was right or wrong. If Photoshop indicated that two shapes were aligned, then they were aligned. If two different shapes were the same size, then that was the case. If two colours had the same hex values, then they looked the same colour.
This approach seemed logical, but it was an incorrect way of working.
[…]
Understanding these subtle differences and knowing how to adjust them is what makes a good designer even better — few will notice if it has been considered, but many will notice if it hasn’t.
