In chemistry, absorbance or decadic absorbance is the common logarithm of the ratio of incident to transmitted radiant power through a material, and spectral absorbance or spectral decadic absorbance is the common logarithm of the ratio of incident to transmitted spectral radiant power through a material.he optical depth equals the absorbance times ln(10). The term absorption refers to the physical process of absorbing light, while absorbance does not always measure absorption: it measures attenuation (of transmitted radiant power).
1 At a lower gain, the noise decreases, but the shutter speed becomes slower to compensate for the lack of brightness, causing camera shake or subject blur.  When recording using [Smth Slw REC], the upper limit of [AGC Limit] is [15dB].
Rule Based Access Control. Rule Based Access Control (RBAC) introduces acronym ambiguity by using the same four letter abbreviation (RBAC) as Role Based Access Control. Under Rules Based Access Control, access is allowed or denied to resource objects based on a set of rules defined by a system administrator. As with Discretionary Access Control, access properties are stored in Access Control Lists (ACL) associated with each resource object.