Dynamic range indicates the ratio between the minimum and maximum signal strength that can be measured without loss of information. Bandwidth indicates the maximum range of wavelengths for which the detector has non-zero sensitivity. Dynamic range is often calculated as the maximum signal that can be accumulated divided by the minimum signal, which is equal to the noise associated with the minimum signal reading. It is usually expressed as the number of bits required to digitize the associated signals or on a decibel scale. To give an idea, a 12-bit digital camera is capable of providing a dynamic range of 4096:1.