This is great news! Love to see things getting better and better.
The new pursuit pattern is a significant improvement over previous one. Finally more transitions and faster panning speeds! And thanks to Rtings for implementing my
MPRT indicator idea. I really like the box design.
I should point out if target speed is 1920 px/sec instead of originally intended 2000 px/sec, round numbers on MPRT indicator won't work and readouts will be a bit off. For example the flaw is visible on 100 or 144 fps shots where it should read 10.0 and 7 ms but it shows 9-10 and 6-7 ms. Some frame rates, such as 240, will show same result for either 1920 or 2000 because they'll both pan at 8.0 px/frame.
source:
100,
144
The issue can be addressed in multiple ways:
A) To keep the round numbers on indicator target must be 2000 px/sec.
B) To keep the lower speed the indicator numbers need to be increased by
4.167% (difference between the two speeds):
- for 1920.png (883 Bytes) Viewed 24718 times
Essentially any deviation from target speed additionally raises margin of error. The more deviation, the more error in readouts. And it is quite common to deviate for such test because not all frame rates are perfectly divisible by 2000 or 1920. For example impulsed 120 Hz at perfect 3.0 ms MPRT, at 2040 px/sec (2000 px/sec target) won't show exactly 3.0 ms on indicator due to very small 2% speed deviation.
The deviation issue is unavoidable at the moment, unless one uses pixels/second panning mode in Smooth Frog to get the sub-pixel speeds. That would allow very fine increments for perfect target match. The issue with this is that it doesn't pan smoothly and can look flickerry/stuttery, therefore inconsistent for pursuit photography. But its fine to try out with naked eye I guess.
This error needs to be resolved. There are many more improvements that can be made to the pattern.
