Amazing images, love those birds feeding off flowers! I could never get one in focus when I lugged my 300mm f/2.8 around, it's always a miss
Maybe I should try the 70-200mm FL + TC14E mk3 combo. Not as light weight as the 300mm f/4E PF... but should give me better results than an MF lens.
Thank you
Agreed. The only way I got crisp shots with my 300 f/2.8 was when mounted on a tripod, standing still, waiting for birds to come to me (in an area known to have them). This is the kind of situation for which I will be replacing my 300mm f/2.8 with a 600mm f/4 (which I am going to obtain, not the 400 f/2.8, ultimately for purely reach purposes).
However, for
hiking, the 300mm f/2.8 is much more difficult to deploy in a fast-reaction situation "that I have come into" (rather than "I have stood around waiting for").
Two different types of photography, both with their strong points.
The 300 f/4 PF is just so much more nimble, and able to be instantly deployed, to follow moving birds flitting through bushes and whatnot, they're not even in the same universe for quick-reaction situations.
Take hummingbirds, for example. It's one thing to point a tripod + super-telephoto at a particular flower, in a hummer-infested area (like a garden), knowing one will eventually stop at that flower ... to nail your shot. Superb images result from such planning and positioning, no doubt, but it's a lot different to come up on some flowers
on a hike, and see a hummer swoop-down 30' ahead of you, totally unexpected, and to have but a few seconds to react in a wildlife setting.
Different situations require different tools. The 300mm f/4 PF is just a great 'have at the ready' tool whilst hiking.
I had considered the 70-200mm FL ... great optic. However, for wildlife, 70mm is pretty useless and even 200mm is pretty short.
Even with a 300mm + 1.4TC + 1.5 crop camera, I almost never find a situation where my (effective) ~630mm is "too much" ... almost without exception, I still have to crop-in a bit, which would be exacerbated by having 100mm less in my lens.
So I guess it depends on what your primary targets are going to be.
Since you're into macro, the 70-200 FL ED is comparable to the 300mm PF for larger macro subjects (butterflies, hummers), but slightly disadvantaged.
Both have great AF with an 'E' electronic aperture (not a G manual one).
However, some points to consider (other than size/weight) is the fact the 70-200 has its worst stats at 200mm, while the 300mm is 300mm, its optimum length.
At its longest setting, 200mm, the 70-200 allows you 0.21x magnification (1:4.76) from 3.61 ft MFD away. (That is pretty darned good, for a non-macro, actually.)
However, the 300mm f/4 PF allows you .24x magnification (1:4.17) from 4.6' feet MFD away, which gives you slightly greater magnification from a step further back.
Compared both to the 300mm f/2.8, which only allows you 0.16x magnification (1:6.25) from 7.55 feet MFD away. (The 7.55 ft distance is nice, but the reproduction ratio/magnification is not.)
It's pretty hard to beat the size, quickness, and flexibility of the 300mm f/4E PF ED as an all-around nature lens