Quote Originally Posted by Richard Lane


<span style="font-size:small;"]Ok.., I have 8 lenses (3 of which are zooms), 3 bodies, and 2 extenders. So.., that sounds like a lot of different combinations.


<span style="font-size:small;"]Perhaps someone will figure out how many combinations that is, and how long it's going to take me.


Rich should the zooms count as 3 since you should check it wide middle and narrow?


I think the longest part for me with the lens align was the learning curve on how to read the scale quickly. At first I tried reading the exact center of focus, tried various ways to determine if it was front or back focused. I ended up with an average method that was very fast. I would take a series of 30 to 40 pictures in grey scale. Pull the card from the camera and down load to a folder that I named whatever the setting was at the time. Then I went through in adobe bridge at 100%. I found a number on top of the scale like that had just started going out of focus. Then one at the bottom that had just started. Then I would scroll through and just pick up on the numbers, if 20 was in focus on top and out on bottom of the scale it was back focus, you get the idea. I would give them like 1 star, for ff, on focus 2 star, 3 star back focus. Then once I went through them I just looked at the info on bridge and it told me how many of each I had. A typical pattern of a set might be 15 Front Focus 10 On Focus and 15 Back Focus, I would consider this lens to be calibrated.


When testing use an even consistent light. Variations in light change results.


But really do you think you have lenses that need calibration?


Rick