Criteria for selecting a borescope are usually image clarity and access.

This has the tradeoff of increased image clarity, but greater dirt visibility.

Further developments that year included improvements in image clarity and an increase in the number of lines of resolution, such that it exceeded that of the mechanical television systems.

Real interlaced video blurs such details to prevent twittering, but as seen in the pictures of the lower row, such softening (or anti-aliasing) comes at the cost of image clarity.