7Dmkii + 1.4xii

CurtL5

Purchaser of a little, Admirer of a lot
Curious if anyone has experienced any focusing issues combining a 7Dmkii with a 1.4xii extender on a 70-200L 2.8ii lens? I've shot sports for years, something north of 500k images so I do have a little experience but yesterday was the first time I used my new 7dmkii in this combination and find a fairly high OOF rate. I'm often shooting bursts of 3-7 frames and in some cases, only -some- of the same burst images are OOF, and in other cases the entire burst is. In the past with a 1Dx or a 5Dmkiii, I will have some of course, but this almost feels like a setup issue or even more possibly, a conflict between the two pieces. The OOF rate is probably around 10-20% if I had to put a umber on it where if I use a different lens like say, a 100-400L v.2, it's more like 3-5%.

The 1.4xii + 70-200 combo on the markiii doesnt have the same issues - it's only the 7D that is seeing it happen so I think I can rule out the lens and extender.

Thoughts?
Experiences...?


~curt
 

johnf3f

Canon 1Dx
Oct 25, 2012
930
19
Wales
I use the 1.4 Mk3 extender with my 7D2 and 100-400 Mk2/300 F2.8 L IS and find the AF pretty good - though not as good as the bare lens as you would expect. On my 800 F5.6 L IS it is OK but, obviously, things get a bit critical with this lens and it is an F5.6 as well.

See if you can beg/borrow a 1.4 Mk3 extender - I believe it is designed to give improved AF with cameras like the 7D2, well mine seems to do a pretty good job anyway.
 

picturefan

EOS 80D
Dec 31, 2015
110
0
Mine got the same problem (7DII+70-200+1,4III). Many OOF, and, relatively offen, camera will not focus at all. I use the 1,4III, so it seems to be regardless, which conv you use.
In some situations with that combo the af will not move at all , sometimes its only hunting, many oof...
I dont know about the reasons whether how to solve the problem.

I think it has something to do with 7DII and the 70-200. They do not work well together, even with firmware 1.5. Heard about issues with older firmware, but they are still consistent with 1.5. Hopefully Canon will offer an update...
 

jmeyer

http://www.jmeyerphotography.net/
Dec 11, 2014
90
190
40
Wisconsin
www.jmeyerphotography.net
The AF system on the camera is terrible! It's always hunting even when locked on a subject. Even when the subject is over half the viewfinder, you can hear the AF of the lens working, when it should be locked on. If you take a burst of 10 or so pictures, you can see the focus shift from back to front or vice versa. That being said, when it does hit, the pictures are spectacular. I don't use the combo that you're using (7d mkii, 500f4, 1.4xiii), but I've never had a great success rate with the camera. My friend shoots the same combo as I do, but uses the series ii 500, and he says the same thing. I've tried fine tuning the AF settings, and I just live with it. I just take 30 more pictures and and then delete 28 of them, so I have 2 good. I've sent mine in with my lens and they did the yearly maintenance and said everything was fine. I've even posted about it on this forum before, after I rented one, a couple years ago.

Jeremy
 

johnf3f

Canon 1Dx
Oct 25, 2012
930
19
Wales
Bit baffled as to your problems.

My 7D2 focuses reasonably well with anything I throw at it so long as it is F8 or better, remember I am comparing to my 1DX "reasonably well" means pretty good to most people.
 

NancyP

EOS 6D MK II
Dec 17, 2013
1,297
14
Have the people with unstable AF tried adjusting the various focusing parameters? I am assuming that my AF problems stem from the fact that I am now dealing with a sensitive system with lots of options (vs. AI Servo center point on 60D), and I need to experiment.
 

Hector1970

EOS 6D MK II
Mar 22, 2012
1,079
256
Personally I've never found the 1.4 Convertor better than cropping in post.
I find there is perceptible slowing in focusing time as well.
For the extenders work better with the big whites.
 

jmeyer

http://www.jmeyerphotography.net/
Dec 11, 2014
90
190
40
Wisconsin
www.jmeyerphotography.net
I only use the center point, unless I'm trying for BIF, in which I use an expanded zone. For me, my old 50D never missed on the center point focus, so that's what I'm comparing to. It just seems like the AF system is so sensitive and won't stay locked on, at least for my camera. I knew it would be a learning curve on this camera, but after 20 months or so, I should know how to use it.

Jeremy
 

eosuser1234

EOS 80D
Jul 16, 2013
138
18
Japan.
I find the 7Dmkii focusing pretty darn good, once you get the AF focus parameters(settings) dialed to what you are shooting. I use the 1.4xii and 2x
by far the 1.4x is better image quality.
test, experiment, keep notes, and fine tune.
 

yungfat

EOS T7i
Feb 16, 2013
92
21
I also wish to know whether the hit rate or speed after attached 1.4xiii. This is always a option then carry an extra lens, and I do not yet purchase because of many uncertainty of the lens performance after attached it.

Thanks.
 

LSXPhotog

EOS RP
Apr 2, 2015
369
194
www.diossiphotography.com
Unfortunately, par for the course. I used this combination for a while on my 7D Mark II. Ultimately, I bought the 100-400 f/4.5-5.6L II USM after using it and it performing like a match made in heaven. I had the same problem with the 1.4XII with the 100-400 as well so I traded for the 1.4XIII and the issues went away except for tracking subjects coming toward the camera. In this case, I still notice an increase in OOF shots, which is to be expected.
 

Nat_WA

EOS 7D mk.II
Aug 15, 2017
676
269
Netherlands
In my experience, 7DmkII with 1.4x III on 70-200 f2.8L (no IS) is doing pretty well for AF, both accuracy and speed (and it will still allow usage of all focus points :) ). Combined with 100-400 f4.5-5.6L II the accuracy is still good enough, but it is taking its time and may need multiple tries depending on contrast / lightness of the subject. Also it will only allow center AF point (if needed with 4 point focus expansion). Not good for BiF / sports at faster speeds / turns...
At 560mm hand-holdability becomes a challenge unless there is a lot of light...

Wiebe.
 
Has anyone had experience comparing focus of 7D2 compared to 80D? I have heard similar complaints about focus problems on 7D2 from other forums and from my cousin, an experienced shooter who does NOT use extenders.

I just picked up a used 300 f2.8L IS at a fantastic price along with a used (but mint) 1.4xiii. I would like to buy another body to keep attached and am considering 80D or 7D2. (Currently I have two 5D4 so I am used to full frame, but crop would be nice for the telephoto). If 80D focus is as good or better, I will go that way for price (since I can't afford/justify a third 5D4).
 

johnf3f

Canon 1Dx
Oct 25, 2012
930
19
Wales
MrFotoFool said:
Has anyone had experience comparing focus of 7D2 compared to 80D? I have heard similar complaints about focus problems on 7D2 from other forums and from my cousin, an experienced shooter who does NOT use extenders.

I just picked up a used 300 f2.8L IS at a fantastic price along with a used (but mint) 1.4xiii. I would like to buy another body to keep attached and am considering 80D or 7D2. (Currently I have two 5D4 so I am used to full frame, but crop would be nice for the telephoto). If 80D focus is as good or better, I will go that way for price (since I can't afford/justify a third 5D4).
I have that exact combination and it works very well on my 7D2. Never used an 80D so I couldn't comment on it.
 

alvarow

I'm New Here
May 30, 2017
17
0
New Jersey
MrFotoFool said:
Has anyone had experience comparing focus of 7D2 compared to 80D?
When it comes to extenders, the 80D + 1.4III has better focus if you are using a f5.6 lens (turned into f8). It will keep 27 AF points active, 9 of which cross type.