It’s an interesting problem. Something sci-d-vis could theoretically charge lots of dollars for.
I don’t think you could do this with a convolve like that, because those are pinhole exposures. You need to have a solid neutrally-lit test pattern (almost lab conditions) to make a setup, and it’s likely to be “attached” to the light K that you light the card with, the RAW conversion settings, the debayering settings and so on and so forth (pretty much all of that can affectAlso, the amount of work to sample a lens in this way is gigantic. Re. the original question I would just go and render a gray lens card matching the original as much as possible, and would then play with the distortion per channel and radial blur per channel to get a setup that is mostly matching. What I was implying is that you need a much more complex way of sampling and applying real-life aberration and a simple channel cross-talk works visually, but not precisely. More here http://www.imatest.com/docs/sfr_chromatic/ On 21 Jan 2014, at 20:25, Michael Garrett <michaeld...@gmail.com> wrote: > Is it feasible to use a lens "impulse response" then run through a Convolve? > Like LensKernelFFT on Nukepedia. It seems that it is able to capture a > complex characteristic like that. > > It's a bit more awkward than shooting grids and using STMap per-channel > though. -- Julik Tarkhanov | HecticElectric | Keizersgracht 736 1017 EX Amsterdam | The Netherlands | tel. +31 20 330 8250 cel. +31 61 145 06 36 | http://hecticelectric.nl
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