I have added deep zooming to Fracton. As a part of the testing, I looked at the area along the negative x axis to see if I could zoom in and find a deep minibrot there. At low magnifications, the minibrots are located at points where some oval shapes intersect the x axis. Zooming in on those contained a minibrot so I tried doing the same thing in the area near (-2.0, 0.0). Not knowing what I would find or how deep it would be, I zoomed in for an hour or so recentering the image to keep the oval shape intersecting the x axis. I eventually found a minibrot at a magnification of about 8E107. There is a much deeper minibrot from the same general area on the FractInt Deep Zooming webpage. Can you guess how the two images differ? Scroll to the bottom for the answer.

The par file for the image is:

Deep107 { ; Exported from Fracton.
   ; time= 1 min 20 sec at 640 x 480 with no aa
   ; on a Mac Pro 2 x 2.8 GHz Quad-Core Xeon
   reset=2004 type=mandel passes=1 float=y
   center-mag=-0.199999999999999999999999999999999999\
   99999999999999998999156258683385300770447192487625\
   02981882543155705650500961365788066678e1/0.0/8.023\
   793735620347e+107/0.9999999992460491/0/0
   params=0/0/0/0/0/0/0/0/0/0 maxiter=2000 inside=0
   logmap=646 proximity=0
   colors=200400600800A00C00E00G00I00K00M00O00Q00S00U\
   00W00Y00_00a00c00e00g00i00k00m00o00q00s00u00w00y00\
   z00y00w00u00s00q00o00m00k00i00g00e00c00a00_00Y00W0\
   0U00S00Q00O00M00K00I00G00E00C00A008006004002000001\
   11333555777888AAACCCEEEFFFHHHJJJLLLNNNOOOQQQSSSUUU\
   VVVXXXZZZ```bbbccceeegggiiijjjlllnnnppprrrsssrrrpp\
   pnnnlllkkkiiigggeeedddbbb```ZZZYYYWWWUUUSSSRRRPPPN\
   NNLLLKKKIIIGGGEEEDDDBBB999777666444222000012034046\
   06807A09C0AE0CG0DI0FK0GM0IO0JQ0LS0MU0OW0PY0R_0Sa0U\
   c0Ve0Xg0Yi0_k0`m0bo0cq0es0fu0hw0jy0kz0jy0hw0gu0es0\
   dq0bo0am0_k0Zi0Xg0We0Uc0Ta0R_0QY0OW0NU0LS0KQ0IO0HM\
   0FK0EI0CG0BE09C08A068056034022000211432653874A85CA\
   6EC7GE8IF9KHAMJBOLCQNDSOEUQFWSGYUH_VIaXJcZKe`LgbMi\
   cNkeOmgPoiQqjRslSunTwpUyrWzsXyrWwpVunUslTqkSoiRmgQ\
   kePidOgbNe`McZLaYK_WJYUIWSHURGSPFQNEOLDMKCKIBIGAGE\
   9ED8CB7A96875664443222000 } 

Can you guess how the two images differ? If you guessed that the deeper image would have more intricate detail you were right. In this case, there are many more rays in the deeper image. The par file for the deeper image (magnification = 7e305) shown below can be found on the FractInt DeepZooming webpage about half way down the page. The par name is two56 and is by Kerry Mitchell.