Exposure latitude is the extent to which a light-sensitive material can be exposed (overexposed or underexposed) and still achieve an acceptable result.
In the case of optical microlithography this value statistically describes the response of a photoresist to radiation and defines the process window where the photolithographic process can vary within (e.g. how well it compensates for spatial non-uniformities of the illumination).
[2][3] It is the range of exposures that can be recorded as useful densities on a radiographic film for interpretation.
[3] High X-ray beam energy will increase the exposure latitude.
[2] High intrinsic subject contrast, as in chest radiography, requires wide latitude to differentiate various tissues in the mediastinum and lesions in the lungs.