Originally posted by RobA_Oz Many of us know the basics of optical design, but I wonder just how many have actually put it into practice.
military and pin hole enthusiasts
they have been curving film along the petzval field plane for years
Originally posted by emalvick I also suspect that from a optics perspective that it is easier to bend light towards a flat surface than it might be the other way.
thats if all light were equal, but its not its a spectrum (a condition that is not limited to a specific set of values but can vary infinitely within a continuum)
for every element you add to correct one aberration, that element introduces another aberration, this is why modern prime lenses can have upto 11+ elements and cost more than most camera bodies
*** just been talking to a guy who actually curved a canon 400d sensor, but it was de-Bayered first (he was using the camera for astro and infrared photography before this experiment)
he said it actually improved the wide open performance and edge sharpness on the entire focal range of a 15-85 efs lens, his conclusion was that it will likely work so well that it might cause some companies to pull out of the camera market altogether due to patients and licensing fees.