W
Wu Jiaqiu
Guest
stick a 500mm/5.6 pf on a Z camera, you can use TCs as well if you want to actually compare the FF route, personally i use a Nikon 1 for telephoto as i get more "reach" out of a lensThis is totally apples to oranges though. With the 300mm/4 + 2x TC on the Nikon you get whopping one cross type AF point and a few line points even with the D6.For the Oly 300mm f/4 they could substitute the AF-S 300mm f/4 PF with a 2x TC and get a package that was fully equivalent but over a quarter of a kilo lighter.
Now, things are a bit different with mirrorless, but still a Z6 for example isn't going to AF too well at f/8. Nevertheless, Canon is releasing a RF 100-500mm/4.5-7.1, so we may start to see long FF glass that actually is comparable to the current MFT offerings in size and performance.

