Title: Strange Blurriness Post by: Chillheimer on October 10, 2014, 02:58:06 PM hi kalle!
please take a look at the attached images and the kfr file. do you have any idea where the blurriness comes from? there seems to be something wrong - when zooming deeper you can find no more details, just blur.. it happens reproducably when you open the kfr and change the image size to e.g. 2048 happens in 2.7 and 2.63 I'm about to do some parallel-zooms, where just one decision ist different in the beginning to explore what consequences that one decision has when zooming in deeper. In the first picture you see the different locations the second shows the zoom into area "1" the third shows the zoom into area "2" Title: Re: Strange Blurriness Post by: Kalles Fraktaler on October 10, 2014, 03:11:44 PM I think it may be a precision issue.
Mandelbrot fractals fail to be rendered at about e13 when only double precision is used, but it often get distorted earlier, depending on the location, e11-e12. Kalles Fraktaler uses reference point <0,0i> until e10, so the effect is that only double precision is used up to that zoom level. But with the very large image size you are using, it might be that the precision issue appears already at e7, because it is still the perturbation formula that is used, so it is not the plain z=z^2+c Title: Re: Strange Blurriness Post by: Chillheimer on October 10, 2014, 08:37:45 PM didn't understand a lot of what you said.. ;)
but checking "special/no approximation" worked to give a clear image.. :) Title: Re: Strange Blurriness Post by: Kalles Fraktaler on October 10, 2014, 09:13:27 PM didn't understand a lot of what you said.. ;) Thanks. My assumption was wrong but now I know how to solve it :)but checking "special/no approximation" worked to give a clear image.. :) |