Cheers for the info,The 50-200 f2.8-4 is £1500 in the UK and second hand about £1000.The 100-300 is about £300 second hand but thats a MK1,I will carry on looking as I am not in a great hurry as the motor racing and airshow season is coming to a close
Thank you all for your advice.
David
You definitely want the 100-300mmii (mk2) much faster AF, dual is2, DFD, WR. optics are the same but the video adaptation is better in AF and less noisy OIS.
If you in a hurry the 45-200mmii is cheap new, kit leftovers, 269,- euro so probably cheaper second hand. (i think you don't like the results comparing to your PL but it beats cropping a bit.

almost wide open f6.3 high iso 3200 200mm.

inside wide open 3200 iso
and my 100-300mmii

f7.1

45-200mm aimed at his head and green boxed it.

200mm 200iso f5.6 looked ok to me.

14-140mm at 88mm

f7.1 iso3200 1/125sec best Aperture for the 45-200mmii
nasty f11 against the sky:

you see the fly's at the bottom at 280mm even above diffraction limits (7.1-f8) f9 can but near end, f11 well is dropdown in IQ charts.
So the 100-300mmii is much more lens to enjoy need less work to get it right.
it's not only the endresult, because it isn't fair comparion , i place the 45-200mmii 3200iso and wide open, against f7.1 and good shutter time with the 100-300mmii, but i throw away my initial test shots of the 45-200mm can't find any low iso high contrast one's i did in the garden as test shots. (i am sure some people have good clean shots with the lens and are working around the problems) it's the overall difference in feel you got from the 45-200mmii and its bigger brother 100-300mmii
1 Aperture did make a strange sound at M-mode.
2 AF did hunt alot in less contrast light. lots of "mishits" when i used AF.
lens felt "cheap" so after some test i brought it back and bought a new 100-300mmii.
which had no AF-hunt aim, lock, click. (ok too close it cant lock it's no "macroshooter")
lens felt as payed for. no lens creap,( which i think the 45-200mm could develop.)
200- vs 300mm is very much difference when you have a 14-140mm as mid lens.
I hope it helps you decide what to do.
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