Shao Zhang : photos : 58 f/1.2 Build Log : Channel cut into the new mount for the protrusion of the ROM chip to sit in.- powered by SmugMug

This is a photo log of just one of my Minolta f/1.2 conversions. The photos are in the same order as my build. Please read each photos caption for details of that step.

To find out more about the custom machined AF mount: http://www.pbase.com/pganzel/modification_of__58mm_f12_rokkor

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Shao Zhang > Leatherman file used to cut a channel into the new mount so that the chip will sit flush

Shao Zhang > Channel cut into the new mount for the protrusion of the ROM chip to sit in.

Shao Zhang > Lens with old mount removed along with the aperture linkage which is attached to the mount assembly.

Shao Zhang > View of the ROM chip about to be installed. Data on this chip is 60mm f/1.1 which is close enough as 58mm f/1.2 was not possible with current Minolta/Sony codes.

Shao Zhang > New mount mounted to a Minolta 7 film camera with the chip put in place for checking alignment spacing. See how the contacts of the chip are aligned with the pins on the camera. This is the target indexing of the chip and any deviations will lead to the chip not making contact correctly. A 1mm shift is too much as I have learned the hard way.

Shao Zhang > This is 5 layers of aluminum tape which will be used as a temporary spacer. You can use any kind of tape but the thicker ones make this easier.

Shao Zhang > Here I have cut 3 spacers from the larger piece I made earlier.

Shao Zhang > Spacers are now placed on the contact side of the chip.

Shao Zhang > Here I have a piece of tape cut which I will use to hold the chip to the mount while the epoxy glue hardens.

Channel cut into the new mount for the protrusion of the ROM chip to sit in.

> Channel cut into the new mount for the protrusion of the ROM chip to sit in.

Channel cut into the new mount for the protrusion of the ROM chip to sit in.

Original size: 1050px x 700px |

Current: 400px x 267px |

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