A host of things were going on today, looking at the DA 55-300 PLM and DA*60-250 but ended up going to the Tamron 300 300 2.8 and F 1.7x.
First off, I used the 1.4 TC on both lenses, deciding it would be a better comparison if magnified.
The results, the DA 55-300 PLM produced a larger subject, even though I had to enlarge the 60-250 to match the extra reach, IMHO the 60-250 image was still better.
PLM+ 1.4 TC for 420mm
DA* 60-250 + 1.4 TC for 350mm
Answers the question 60-250 or DA 55-300 PLM for straight up image quality. Mind you for squirrel shots , do you really care? Also with a 9.5 minimum aperture there were some birds with finer feathers (like the White Breasted Nuthatch) the PLM simply would not lock focus on. Yet no problem for the 60-250. What a difference 1.5 stops makes.
I did however finally manage a PLM image at 420mm image of this bird.
A downy wood pecker visited fo a bit. Absolutely no problem for the PLM.
With the DA*60-250 and 1.4 = 350mm
After this I gave up on the testing thing, and got serious about our current migration guests, a flock of Redpolls. That meant hauling out the TAmron 300 2.8 with the 1.7 AF adapter.
A "snow squall" snow falling from neighbouring trees...the snow seriously affect the sharpness of the focus and contrast, but still I like the image.
---------- Post added 04-01-19 at 02:58 PM ----------
Originally posted by Des Some more recent parrots.
Yellow-tailed Black-cockatoos. K-3 + FA*300 f4.5
The fun squad. Rainbow Lorikeets. KP + 55-300 PLM
A wild Sulphur-crested Cockatoo (in someone else's yard). KP + 55-300 PLM.
At Bird Kingdom in Niagara falls, us Canadians can have a go at photographing similar birds, for a price....
Click on the image below for info. I'm not the only forum member who has been. It can be a great photographic day out, if you don't go with your kids (or an impatient wife) and have some 2.8 glass.