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Mandelbulb 3D Z Start Tutorial

By fraterchaos
A little tutorial about fixing "cut off" fractals in Mandelbulb 3D

just a little note, in some cases, unlike the tutorial, you may have to use an even smaller number for the Z Start... in my render "cages" I first changed the Z Start as in the tutorial, just a small amount, but that did not move it enough... I doubled the amount that I changed it, and still the tubes were cut off... I ended up going from something typical like -1.5 to something like -40 or -50 to fix it, so you may find you have to use lower and lower numbers until you finally reach the place you need.

Just remember, negative numbers move away, positive number move closer, and never forget -2 is SMALLER than -1 :)
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© 2012 - 2021 fraterchaos
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Lior-Art's avatar
Excellent tut :wow:
cynexx74's avatar
Thanks very much for this, I was having this exact problem and it was driving me nuts :)

I discovered can also do something similar in 3D navi, with the zoom step options but your method gives much more control. 
fraterchaos's avatar
glad to have helped!
jost1's avatar
Once again me. Z-end is the same in the background. When you set it near to the mid value (only a little bit bigger), things in the bg disappear. If you want more bg, set it higher 20 or 100, just try.
Only how Z-mid changes the pic, and it does, I didn't find out yet.
fraterchaos's avatar
yes, you can use the Z start and Z end together to get more of the fractal to show up, and the BG as well... and yeah, I'm not sure about Z mid myself
It annoyed the hell out of me when the camera cut up my fractals, thank you for the help :-D
fraterchaos's avatar
dark-beam's avatar
IAmThatStrange's avatar
This is the first time I've found any information on how to fix that.! (granted I probably Googled the wrong terms)  Thank you Hug 
fraterchaos's avatar
I hope you find it useful... I believe HalTenny may have also done some tutorials about this and similar things... always worth checking out all his great tuts!
IAmThatStrange's avatar
Yes yours was of great help.  HalTenny has been too and his tutorials have been of great help.  And maybe it's just that I didn't know quite how to search for what I saw MB3D doing, it almost always turned up using the Cutting parameters. 

In any case I'm very happy to have found this, thanks again!
fraterchaos's avatar
always my pleasure :)
jost1's avatar
I don't understand MB3D at all, but that's why I love it! :D I often use the Z function, when the fractal diappears when zooming in, but often it does unexpected things. I don't mind.
fraterchaos's avatar
lol, I know what you mean, not knowing what will happen next is the best part!
jost1's avatar
PhotoComix2's avatar
oh what a cool tip !
i often had to fight to avoid cutting i didn't know of a similar fix, thans
fraterchaos's avatar
sometimes you can step backwards in the Navi, but that doesn't always work as well, other times stepping is better and Z Start doesn't work as well, but usually you can find one or the other will


most welcome!
willclark218's avatar
hah... funny but is one of the few I hadn't read.. but you do explain it well... will definitely utilize on those frustrating fractals that get those flat front facing edges as you zoom... nice job brother... and thanks.. :D
fraterchaos's avatar
no problem, I hope it helps you out at some point!
willclark218's avatar
most definitely will my friend... thank you...
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