A7RII with Canon 70-200F2.8 tracking a moving target ...

wallstreetoneil wrote in post #17672545
Don't think so - can't say 100% however, lets call it 98%.

I get the entire buffer thing - I'm a 7D2 user and also now a 5DSR user so I'm 100% clear that you have to wait when it is writing - in fact I've seen it 2 or 3 times on the A7R2 - this was not that - this was complete DOA.

As I said, camera on and off - and twice, did not fix it. I seriously thought I was headed back to the store. But, as I already know that the MB4 has done some strange things with the 70-200 F4, I knew that at minimum I would have to turn camera on & off to reset it - but this required a battery pull.

Yeah sounds like a communication error between the adapter and the lens.

This was an issue with the original a7r initially. A few firmware updates on both the adapter and camera side seemed to fix the issue. Mind you, the MBIV and the most recent firmware were built around the older a7 bodies and contrast detect. Phase detect with adapted lenses and the a7rII are not something that the MBIV was built around.

Here is a 8 shot sequence, Flexible Small, tried to point it on the licence plate - all would pass the in focus test of the licence plate.

(1/1000, F2.8, ISO 100, @70mm)

IMAGE LINK: https://flic.kr/p/xt5k​Mj

IMAGE LINK: https://flic.kr/p/wwTc​Mu

IMAGE LINK: https://flic.kr/p/xcoT​Ck

IMAGE LINK: https://flic.kr/p/xcoR​6B

IMAGE LINK: https://flic.kr/p/xrzg​S3

IMAGE LINK: https://flic.kr/p/xt5s​1G

IMAGE LINK: https://flic.kr/p/wwT1​DN

IMAGE LINK: https://flic.kr/p/xtTL​hR

definitely sounds like a glitch. When buffer is full, even after you turn off, it will continue to write. Probably an adapter issue, about the only time my camera has ever acted funky is either with LA-EA3 or EF-E adapter. Fixing is as simple as reseating the adapter.

Charlie wrote in post #17672556
definitely sounds like a glitch. When buffer is full, even after you turn off, it will continue to write. Probably an adapter issue, about the only time my camera has ever acted funky is either with LA-EA3 or EF-E adapter. Fixing is as simple as reseating the adapter.

This is my point - with an adapter it can and does act up. It is one of the reasons I am testing it - I want to see where and when it can be useful. So far, with the MBIV adapter it does act up - and it isn't predictable when it is going to happen. If you were at a wedding and you thought you were good because you had the 70-200 F2.8 II I can report that while it is pretty decent at tracking it also stopped working (not exactly what you want if you are shooting the bride coming down the aisle - ad if it can happen with the 70-200, it certainly can happen with the 24-70 F2.8 II - another lens I'm certain likely wedding shooters are going to want to use.

My guess is that I have put more shots on a 70-200 F2.8 II and until yesterday I thought it was not perfect but basically ok. Now I can report that: 1) it may hang the camera and 2) Flexible Large, which I thought was the best setup for tracking, failed completely while trying to track a car coming towards the camera in good light (which I didn't see coming).

wallstreetoneil wrote in post #17673273
This is my point - with an adapter it can and does act up. It is one of the reasons I am testing it - I want to see where and when it can be useful. So far, with the MBIV adapter it does act up - and it isn't predictable when it is going to happen. If you were at a wedding and you thought you were good because you had the 70-200 F2.8 II I can report that while it is pretty decent at tracking it also stopped working (not exactly what you want if you are shooting the bride coming down the aisle - ad if it can happen with the 70-200, it certainly can happen with the 24-70 F2.8 II - another lens I'm certain likely wedding shooters are going to want to use.

My guess is that I have put more shots on a 70-200 F2.8 II and until yesterday I thought it was not perfect but basically ok. Now I can report that: 1) it may hang the camera and 2) Flexible Large, which I thought was the best setup for tracking, failed completely while trying to track a car coming towards the camera in good light (which I didn't see coming).

I'm using the LA-EA3, Sony's official adapter, and even then, it can act up if the adapter isnt seated well. Fortunately, a quick disconnect, reconnect is a super fast fix. I disconnect, turn 5 degrees to loosen, then tighten again. I dont fully remove the adapter.

I described my efforts in tracking my child running to me in this thread

http://www.dpreview.co​m/forums/thread/389100​5

I thought my 17-40L also stopped tracking as my child got close, but people in thread suggested that it does not track at all period and I was simply benefited at first from large FOV further which stopped when my child was getting close. Here is a tread with reference to flickr sequence

http://www.dpreview.co​m/forums/thread/389100​5

wallstreetoneil wrote in post #17665032
Here is another picture from today. Again, I shoot hockey a lot, these are not how I would process them or the shots I would take - but an issue came up that I think is worth highlighting. In most hockey arenas now, there is a webbing that you may have to shoot through. About 2 years ago this started to go up in every arena around Toronto. At the time I was using my 5D3 and a 70-200 and 95% of the time everything was good. I decided to buy the 1.4X extended and it was just not usable because the extender reduced the number of autofocus points and all of a sudden it started catching the webbing all the time - so I quickly took it off. There was a 5D3 software upgrade shortly after that that helped things a lot but I never went back to using the extender in arenas.

When I tried to use either the 70-200II or the 24-70II on the A7Rii today, I had to manually focus past the webbing and then it would be ok unless action got closer to the end of the webbing and then the AF would catch the netting again. So, it isn't a big issue but it is an issue for sure if anyone is going to be heading out to hockey arenas. I suspect it won't matter if you are using native lenses or not.

In the picture below, taken with the 24-70II (no edited etc etc) you can see the webbing - even though the focus is past the webbing.

And if you want to know why Canada is the top hockey country on earth, this is what we do all summer long (unfortunately). As a side note, if you have never seen a hockey goalie school in action it is basically like the movie fight club - 'what happens in fight club stays in fight club'. The boys, and a few girls, basically get absolutely pelted in the chest and head over and over and over until it doesn't faze them taking a 90mph shot between the eyes. Crazy - I was a D and would never go in net but my son loves it.

That is my son is the 2nd goalie on the right in net with the white and yellow pads. I hadn't noticed he was actually in the air but he jumped up after taking one in the teeth to shake it off. All the shooters have either been drafted to the NHL or our currently playing OHL -they come to practice their shots on fresh meat. My son just finished grade 8.

IMAGE LINK: https://flic.kr/p/xevs​uv james_goalie_school by Paul O'Neil, on Flickr

I just love the story behind the shoot. Forget the camera (although it's amazing). Thank you for posting your finding I'm on the verge of letting go of my Nikon D750 to pick up another A7x camera or lens but I might end up waiting for the price of this guy to go down. Even though I only get 1 tax here in Alberta, I don't make enough (oil money) to purchase this bad boy haha.