Yes the 300/2.8mk2 from canon looks very good in the MTF lab and Hasselblads measurements
and much more importantly it works well when you use it to take real photographs.
Had a good time with mine today.
Do you use it with the 2x converter at times?
Also im close to ordering the 500 lens foot to put on the 300 for comfort!, i hope that it will fit....
Since the 500 comes with both a small and big foot , and the small one looks identical to the 300 foot I am kinda anticipating it will!
Will provide a bit more comfort for handholding with my hands
I've used the 2x TC with the EF 300mm f/2.8 L II, and the IQ is phenomenal. Even with the 2x TC, it is still one of the sharpest lenses on earth. Sharper than my 100-400mm at is BEST, by a long shot. Background blur is also dependent upon the ENTRANCE pupil, so even with a 2x TC, your background blur is effectively the same as an f/2.8 lens...so it is a fantastic combination. You really couldn't go wrong with it.
Thank you for this posting! I really needed to hear this from someone using the EF 300mm f/2.8 L II together with the 2x TC.
I was reminded that Bryan C in TDP maybe for first time admitted that the 2x TC III from Canon together with this lens was useable.
Of course that is based in the top-notch optical quality from the lens itself because we all know that all flaws and weaknesses from the lens that is in front of the TC will be also magnified.
Thank you jrista for all your postings!
Wish you a very good weekend!
All the Best!
You are welcome. Glad to be of service.
To be clear, there is definitely a drop in sharpness when using either TC, however the 300/2.8 II with 2x was still sharper than my 100-400mm at f/7.1 or f/8 (the two ideal apertures). In my experience, ANY of the Canon great whites, at any aperture with or without any TC, are all sharper than pretty much any other lens in the Canon lineup, with perhaps the 70-200/2.8 II as an exception.
I had a long, hard debate about which lens to get next, between the 300/2.8 II and 600/4 II. In the end, I decided the 600/4 II offered me more for the kind of photography I do most (birds, wildlife, and some aerial stuff for model planes and air shows), than the 300mm with a teleconverter. I'll probably still pick up the 300/2.8 II, but it'll be a couple years, as I'll have to recover from the 600mm purchase this year. Regardless...whether you intend to use teleconverters or not, you really can't go wrong with any of the Great Whites.