03-31-2012, 11:45 AM
[quote name='joachim' timestamp='[url="tel:1333174014"]1333174014[/url]' post='17203']
This is a question mostly to the PZ masters
Based on a recent query asking about reproducing flat objects is there a way to extract field curvature info from the lens reports?
I understand current PZ testing removes that from the data by repurt "best observed" which might be in different focus positions. For centre, boarders and extreme boarders. While this is fine for many tasks it is not good for the task at hdnd.
If it is not included adding it to future reports might be something to consider.
Thanks.
J.
[/quote]
This is difficult ... As you may have guessed ;-)
In theory the info could be extracted from the EXIF data.However, this assumes ...a) that the EXIF data has a sufficient granularity regarding the provided focus distance datab) that there is only a minimum centering defect ( which has an impact on the focus point )
This is a question mostly to the PZ masters
Based on a recent query asking about reproducing flat objects is there a way to extract field curvature info from the lens reports?
I understand current PZ testing removes that from the data by repurt "best observed" which might be in different focus positions. For centre, boarders and extreme boarders. While this is fine for many tasks it is not good for the task at hdnd.
If it is not included adding it to future reports might be something to consider.
Thanks.
J.
[/quote]
This is difficult ... As you may have guessed ;-)
In theory the info could be extracted from the EXIF data.However, this assumes ...a) that the EXIF data has a sufficient granularity regarding the provided focus distance datab) that there is only a minimum centering defect ( which has an impact on the focus point )