Truman, > In any sensor when one is operating outside the linear dynamic range, > the sensor is responding nonlinearly to the stimuli. I don't see how linearity is an issue, as long as it's repeatable and can be characterized. > I for example you > are at the at a signal energy that when broken into three frequency > components each component will be in the non-linear portion of the > dynamic range then by recording the energy on the three sensors. This > will result in different answers for the total energy on the sensor. But isn't the answer the same given a consistent input? > In > a photograph it will most likely result in a loss of detail in one color > channel or the other and result in distortion in the photograph just the > same way as one gets distortion in an audio system, an C or X band > imaging radar when one is trying to operate outside the dynamic range of > the sensor. But we're not talking about working outside the dynamic range of the sensor. > It is important to stay in the linear range. I disagree. I deal with non-linear signal processing all the time. I don't see this as an issue. Regards, Austin
Message
RE: [Digital BW] Digital, film, scanning comparisons
2003-05-23 by Austin Franklin
Attachments
- No local attachments were found for this message.