The modified 5002 adapter (#50021) is now available.

This adapter, which is used with Pentax 1.7x AF adapter, achieves BORG AF capability. The camera must be Pentax one though. Following pictures are its result.

71FL + 7878 (0.78x) + Pentax 1.7x+ K-7

400mm x 0.78 x 1.7 = 530mm / 71 = F7.5

7878 was used to make optics bright enough for AF capability

~ by tedishikawa on November 12, 2010.

2 Responses to “AF BORG”

  1. Hey Ted,

    Is there one for the EOS system?

  2. Perry,

    Thanks for your comment.
    Unfortunately, not for Canon. We need following kind adapter.

    I couldn’t find Pentax US site. The bottom is the one.


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