Originally posted by TwoUptons I wonder how sensible it would be to build a teleconverter with a apodisation filter built in...
I think the APD filter or element has to sit very close to the aperture diaphragm. If not I suspect it will only cause heavy vignetting.
If people accept reducing light by one stop, the aperture may be
replaced by a b/w LCD screen that makes an artificial aperture. Since LCD screens can have high contrast, many gradations between transparent and non transparent, and lots of pixels it can simulate both a apodizing filter, ordinary round apertures, not so round apertures, and have a collection of special shaped apertures to make figure bokeh. It would be a very artistic lens that fits well in Lensbabys lens lineup. I'm not sure LAOWA would go into that niche.