This leads to very interesting further reading. Thank you for sharing it. I recall Richard mentioned T Stops before (here or in the Rollei list). I put my exposure meter under the enlarger the other day to see if the aperture stops actually corresponded to full stops in light output, and they did not. Some lenses were better than others, but a full stop of aperture change is not necessarily the same as a full stop of exposure change. Photography like any art or craft is about dealing with limitations of tools. I've also experimented with my Gossen Luna Pro, and my digital camera, the readings from the now ancient hand-held produce fine exposures on the sensor - but not all the time. Can't say I don't have that problem with film. Elias On Oct 27, 2010, at 6:42 PM, Tim Daneliuk wrote: > http://www.luminous-landscape.com/essays/an_open_letter_to_the_major_camera_manufacturers.shtml > -- > ---------------------------------------------------------------------------- > Tim Daneliuk tundra@xxxxxxxxxxxxxx > PGP Key: http://www.tundraware.com/PGP/ > > ============================================================================================================= > To unsubscribe from this list, go to www.freelists.org and logon to your > account (the same e-mail address and password you set-up when you > subscribed,) and unsubscribe from there. ============================================================================================================To unsubscribe from this list, go to www.freelists.org and logon to your account (the same e-mail address and password you set-up when you subscribed,) and unsubscribe from there.