The talk about the fiber optics devices made me think... The main reason a wideconverter (as in the opposite to teleconverter) that goes behind the lens is that the image circle of the lens is in general not big enough.
Would it be possible to design a ~0.67x converter, to effectively bring back the angle of coverage of full frame SLR lenses to an APS size sensor? Are there other technical limitations besides the size of the image circle? It would be really nice to use the wide angle lenses we already have as real wides... It could even be made AF, like some teleconverters. Am I missing something or is it just that it's probably not worth it marketing-wise? j -- Juan Buhler http://www.jbuhler.com blog at http://www.jbuhler.com/blog
