That was incredibly helpful!!! Thank you very much
@faunagraphy. It does seem to prove that you might do better with the A1 (slower initial focus but better tracking) or the OM-1 (the opposite), depending on the circumstances. Which has indeed been what I understood
@fsi22 and you have said all along.
I wanted to summarise here again my conclusions because I have learnt a lot from this thread and perhaps this can be useful for others. I really want to thank again everybody who took the time to share their views and help me and you among them
@faunagraphy for drawing my attention to many new ideas such as the dot sight for instance. And thank you as well for pointing me in the direction of this video… he also has a very interesting one on red grouse in flight… with the A1 by the way:
MEDIA=youtube]fbjgU_l-RxM[/MEDIA]
I have concluded that for my photography, the OM-1 is worth a try (I have already tested the A1).
My hope is that in my case I will capture the very difficult initial take-off or bird in close range more often than with the A1, while I will lose other shots because of worse tracking and not being able to crop to the same degree. The idea is to gain more keepers with the former than you lose with the latter!
For me weight and handheld maneuverability were also important factors, and there the OM-1 is also strong (but this might not matter for many other types of photography). Another aspect that I liked (again for my needs) is the EE-1 dot sight which would seem to work better with the OM-1 and might not even work at all with big primes (?).