On 02 Jan 2003 18:29:00 +0100, Heiko Hamann wrote: >Hi Rob, > >on 02 Jan 03 you wrote in pentax.list: > >>I don't think the time taken for an imprint is too bad but the frame >>rate was on the low side already and I guess they thought this the best >>compromise. Dropping to 2 fps would possibly have been too much for >>some people to swallow. > >Maybe it would have been better to invest the money in developing a >faster winder instead of the data saving and later imprinting ...;-)
The reason for doing the data imprinting on rewind is to ensure that data is recorded on all frames. The imprinting is done by a single row of emitters - like the pins on a dot matrix printer. This means that you have to run the film over the "print head". If you did this after the shot, you need to pull more film out of the canister. On the last frame there is no more film to pull out, which means doing it that way you would never get data on the last frame. On rewind the entire film is passed over the print head and all the information is recorded. Leon http://www.bluering.org.au http://www.bluering.org.au/leon
