Gavyn. Posted May 25, 2007 Report Share Posted May 25, 2007 should the point where the blue lines cross not be on the image sensor other wise the picuture would be out of focus? Quote Link to comment Share on other sites More sharing options...
F-Stop Junkie Posted May 25, 2007 Report Share Posted May 25, 2007 should the point where the blue lines cross not be on the image sensor other wise the picuture would be out of focus?Remember that an image appears on film or sensor upside down. If the point where the lines crossed was on the sensor, then all you'd see would be a white dot rather than an image!I think these days the idea of a lens being a certain physical length to contain a certain focal length is daft because of advances in lens design, glass technology, etc... Quote Link to comment Share on other sites More sharing options...
Gavyn. Posted May 25, 2007 Report Share Posted May 25, 2007 Remember that an image appears on film or sensor upside down. If the point where the lines crossed was on the sensor, then all you'd see would be a white dot rather than an image!I think these days the idea of a lens being a certain physical length to contain a certain focal length is daft because of advances in lens design, glass technology, etc...cheers for that i think i was getting confused with how the eye works Quote Link to comment Share on other sites More sharing options...
Davetrials Posted May 25, 2007 Author Report Share Posted May 25, 2007 gos this topic is shit, i dont even care any more, some one posted up a picture that kinda explains it thats easy enuff. Quote Link to comment Share on other sites More sharing options...
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