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Droplet merging into the background
Pale and poor contrast between droplet and background
FAMAS is not just software for measurement instruments, but a high quality image processing tool.
There are ideal solid surface conditions to measure contact angles. State of surface, however, varies from customer to customer; samples are not designed for its measurement.
With FAMAS, you can set parameters in the Property Window to adjust to any situation.
Some examples are shown here. If you have experience with contact angle measurement, you might notice that these images can cause errors in the results.
When measuring contact angles, most tools show images in black and white, not grayscale. FAMAS, however, uses a unique algorithm to creates a rich silhouette of the droplet, the most important object in the image, allowing the outline of the droplet to be measured correctly to produce more accurate data.