Sony 100-400 FE lens would you buy?

I am giving some serious thought about making a purchase of the Sony f/4100-400. I would trade a 70-200 and a 70-300 since they would more than likely gather dust. Is this 100-400 lens a good buy at this time? 

It's by far the highest rated 100-400 or 80-400 on the market so it certainly would get a buy recommendation.  Here is the DXO comparison compared to the previous champ in this genre of lens.  It's important to note that even though the Canon lens was tested on a higher resolution camera than the Sony, the Sony still kills it in the sharpness metric resolving 50% more pixels...
https://www.dxomark.com/Lenses/Compare/Side-by-side/Sony-FE-100-400mm-F45-56-GM-OSS-on-Sony-A7R-II-versus-Canon-EF-100-400mm-F45-56L-IS-II-USM-on-Canon-EOS-5DS-R__1850_1035_1469_1009

Thanks for the info. I am trying to consolidate my lens selection and thus reduce weight and bulk for air travel and hiking. Every little bit helps for an aging body.

If you're trying to reduce weight, wouldn't the 70-300 be a better choice ?
I am also considering this focal length range, and the 70-300 seems like a worthy candidate, especially since it is much lighter then the 100-400.

lelouarn wrote:If you're trying to reduce weight, wouldn't the 70-300 be a better choice ?
I am also considering this focal length range, and the 70-300 seems like a worthy candidate, especially since it is much lighter then the 100-400.

That is exactly why I kept my 70-300 and have not purchased the 100-400.

I bought the Sony 100-400. I think it is fantastic. Great image quality. Matches up perfectly with the (smaller than Canon and Nikon) Sony 1.4x. Very quick to focus (two focusing motors). Very sharp. It is about the same size and weight as the Canon 100-400 mk2, so no weight saving. Lens foot is easy to remove and replace if you like to shoot without it. The image stabilization system is the best I have ever used. It's an expensive lens, but I'm sure you will not be disappointed by its performance.

Thanks for the comments-very helpful. My major concern is not the per lens weight but the fact that I am starting to accumulate to many lens. I also found that the 300 reach was not enough for me when I visited Alaska. However,I might keep the 70-200 lens for use when the 100-400 is not needed.

The 100-400 mated with the A9 is a great combo

I have been testing it also with both the 1.4 an 2x extenders. Tracks with both and the images are sharp.
I am very impressed
Mike

I just did my first serious bird shoot with ducks swimming on water this morning with this lens and I am blown away. The sharpness is better than any other zoom in this league that I have used and that is essentially all of them and having AF on the sensor eliminates any focus accuracy issues. The hit rate on subjects moving in water is unprecedented. The AF setting I am using is Lock-on AF: Flexible Spot S - this mode uses the smallest AF sensor size and whatever you initially focus on, no matter where in the frame it goes, the camera will continue to focus on that spot on your subject. So just hit the eye of the bird and the camera continues to stay on the eye even if it goes to a completely different part of the frame and since the AF is done on sensor there are no AF sensor to imaging sensor errors.

Depends on which camera you intend to use it on. I tried it with the A7RII and while it was razor sharp it didn’t focus well. The A7RIii is much faster.

Sounds like E.J. Is rather taken with it.

I used an a6300 this AM and for swimming things, it was fantastic. I can't wait to try it on an a7R III especially in crop mode where the entire frame has OSPDAF.

lelouarn wrote:If you're trying to reduce weight, wouldn't the 70-300 be a better choice ?
I am also considering this focal length range, and the 70-300 seems like a worthy candidate, especially since it is much lighter then the 100-400.

I traded up from the 70-300 G to the 100-400 GM and don't regret it at all. Those two lenses are a world apart as far as image quality and sharpness are concerned. I used both with the a6500 and the 100-400 is the one I recommend to everybody. I don't consider the lower weight of the 70-300 a valid argument since it's the image quality that sells pictures, not the convenience the photographer enjoys.

My 70-300 was very good but this 100-400 is next level!