1. A method of detecting an in-flight location of a drop in an inkjet system, the method comprising: ejecting a first drop from a first location, the first location having a predefined first axis coordinate and a predefined first axis threshold value associated therewith; capturing a first drop image of the first drop in flight; capturing a second drop image of the first drop in flight; determining a first axis coordinate of the first drop in the first drop image; calculating a first axis coordinate difference value between the determined first axis coordinate and the predefined first axis coordinate; and determining whether or not the calculated first axis coordinate difference value exceeds the first axis threshold value.