Bob Latham
New member
I thought I'd bring an update to the Micro-Adjustment discussion as I've been performing some beta testing on an automatic calibration system written by a guy in the UK.
The software was developed using Canon's SDK utility and attempts to find the correct MA value for each lens. The code controls the camera via its USB port and takes a series of upto 40 images of a test chart (at all MA values from -20 to +20) and then performs an analysis of the contrast. The information is presnted in graphical format and the derived MA value is written (if required) to the camera body.
The initial release covered the 7D and 5DMkII with the 50D and 1DsMkIII now being tested. The 1DMkIII and 1DMkIV will follow shortly. I have just completed calibration of my 1DsMkIII with 7 primes (14, 24, 35, 50, 85, 100 and 135mm) with a solitary zoom (70-200) and the results look good. The values differ from the ones I obtained using a Lens Align Pro but not greatly so and all cases bar one have agreed with my previous direction (front or back focus). I'll be trying the telephotos and remaining zooms in the next day or so.
More can be read here at the developer's website. http://www.reikan.co.uk/focal/
Bob
The software was developed using Canon's SDK utility and attempts to find the correct MA value for each lens. The code controls the camera via its USB port and takes a series of upto 40 images of a test chart (at all MA values from -20 to +20) and then performs an analysis of the contrast. The information is presnted in graphical format and the derived MA value is written (if required) to the camera body.
The initial release covered the 7D and 5DMkII with the 50D and 1DsMkIII now being tested. The 1DMkIII and 1DMkIV will follow shortly. I have just completed calibration of my 1DsMkIII with 7 primes (14, 24, 35, 50, 85, 100 and 135mm) with a solitary zoom (70-200) and the results look good. The values differ from the ones I obtained using a Lens Align Pro but not greatly so and all cases bar one have agreed with my previous direction (front or back focus). I'll be trying the telephotos and remaining zooms in the next day or so.
More can be read here at the developer's website. http://www.reikan.co.uk/focal/
Bob