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FORUMS Canon Cameras, Lenses & Accessories Canon EF and EF-S Lenses 
Thread started 17 Dec 2014 (Wednesday) 10:12
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EF 100-400mm f/4.5-5.6L IS II USM Review WOW!

 
bidkev
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Jan 25, 2018 03:41 |  #7396

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MatthewK
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Jan 25, 2018 05:09 |  #7397

Maureen Souza wrote in post #18548423 (external link)
Well I have come to the conclusion that I like this lens better on my 7D2 body than on my 5DMK4 body. Not that it does a bad job on the 5D but it feels better to me on the 7D. I have used it with & without the 1.4 teleconverter & I do miss the stops of light I get without the converter. That said, i will be very comfortable taking it on the 7D2 for my Yellowstone Photography trip and keep the 27-70mm lens on the 5D4. A couple of shots I took today.... I actually practiced on my grandsons all afternoon under part sun and all overcast lighting & am pretty happy with the outcome.

Both of these shots were taken in shade under overcast skies.

I'm in agreement. I like the results I get from the 100-400 II on the 5D4, but am absolutely thrilled with the shots I get with it on the 80D.

Maureen, I like the travel combination you've picked for Yellowstone; not much you won't be able to shoot with a 24-70 + 100-400. This will probably be my travel rig for future trips too.


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RodS57
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Jan 25, 2018 10:18 |  #7398

sploo wrote in post #18548229 (external link)
Hunt is maybe less appropriate than "anticipate". I liken it to when someone throws a ball for a dog (but actually keeps the ball in their hand); the dog starts to move, before realising the ball hasn't actually gone that way. There's a lot of logic related to predicted velocity; whereby if it looks like a target is starting to accelerate in one direction the AF will start to move on the assumption of where the target will be ready for the next frame *.

The camera's settings can make that behaviour sluggish, or extremely skittish. I saw that (skittish) somewhat with the original 7D, and (less so) with the 5D3. I've not used the 7D2, or seen it with the 5D4. Note that I don't mean really big movements (like a target clearly going out of focus); just the AF motor sounding like it was working a darn sight harder than it needed to for the static subject (like a dog twitching as it's waiting for the ball).

The 5D4 seems to push lenses noticeably harder than the 5D3 in AI Servo, but also seems to be more stable on a lock.

* I can't recall the Canon article where I read about this (perhaps a Chuck Westfall piece; and some years ago). I've done some camera development (not consumer) where we've used similar predictive (velocity based) logic for tracking objects moving towards or away from a camera.

my7D2 does that with my tamron 150-600. A persistent nervous twitch.

rod


>>> Pictures? What pictures? <<<<

  
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chris001
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Jan 25, 2018 12:55 |  #7399

this morning in the yard...

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Thanks!
Chris
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lazybones
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Jan 25, 2018 13:49 as a reply to  @ chris001's post |  #7400

Lovely photos Chris, Just love the photo of the woodpecker. Hopefully I will buy/get one (The Canon EF 100-400 is mark 2) sometime this year. :-)




  
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chris001
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Jan 25, 2018 14:53 |  #7401

lazybones wrote in post #18548752 (external link)
Lovely photos Chris, Just love the photo of the woodpecker. Hopefully I will buy/get one (The Canon EF 100-400 is mark 2) sometime this year. :-)

Thanks!
once you get past the cost, you will enjoy it! LOL I saved a long time for it.
I need lots of practice though.


Thanks!
Chris
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Pondrader
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Jan 25, 2018 19:06 |  #7402


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Jeff ........, 7D, 70-300L, 100-400LII
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lijoec
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Jan 25, 2018 19:38 |  #7403

ok, Frustration is setting in. How can I go from razor sharp to mushy ??? I bought a mono pod and here are some results. Straight out of camera.


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lijoec
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Jan 25, 2018 19:40 |  #7404

it almost seems like closer gets super sharp and infinety is mushy.


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Joe
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LJ3Jim
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Jan 25, 2018 20:11 |  #7405

lijoec wrote in post #18548981 (external link)
ok, Frustration is setting in. How can I go from razor sharp to mushy ??? I bought a mono pod and here are some results. Straight out of camera.

thumbnail
Hosted photo: posted by lijoec in
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forum: Canon EF and EF-S Lenses

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Hosted photo: posted by lijoec in
./showthread.php?p=185​48981&i=i20093025
forum: Canon EF and EF-S Lenses

I'm going to suggest atmosphere. It would be interesting to see what the far shore of the pond looks like if you focus on it. It will probably be much worse than the birds. If so, the softness is probably atmosphere related. At 560mm and the small-ish pixels on the 80D, atmosphere can have a huge affect on your images. I have some horrid images from my 1DX2 that were ruined by atmosphere.


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lijoec
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Jan 25, 2018 20:22 |  #7406

LJ3Jim wrote in post #18548999 (external link)
I'm going to suggest atmosphere. It would be interesting to see what the far shore of the pond looks like if you focus on it. It will probably be much worse than the birds. If so, the softness is probably atmosphere related. At 560mm and the small-ish pixels on the 80D, atmosphere can have a huge affect on your images. I have some horrid images from my 1DX2 that were ruined by atmosphere.

It was very cold, and very clear. 35% humidity. Could it have been the wind? Would wind have and effect on the distance?


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Joe
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Pondrader
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Jan 25, 2018 20:29 |  #7407

lijoec wrote in post #18549009 (external link)
It was very cold, and very clear. 35% humidity. Could it have been the wind? Would wind have and effect on the distance?

Joe I think I would have got the same image with my 7DII and the lenses.. its just very hard to see where focus landed. In the past I have found a camera reset was all that would set things ok again. even when I had not changed anything. maybe try shooting stuff that is within a reasonable distance so you can judge better what your seeing.


Jeff ........, 7D, 70-300L, 100-400LII
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lijoec
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Jan 25, 2018 20:50 |  #7408

Pondrader wrote in post #18549012 (external link)
Joe I think I would have got the same image with my 7DII and the lenses.. its just very hard to see where focus landed. In the past I have found a camera reset was all that would set things ok again. even when I had not changed anything. maybe try shooting stuff that is within a reasonable distance so you can judge better what your seeing.

Maybe I'm expecting to much. I guess I have to keep plugging away to find what I can reach and can't. Thanks for the help. Oh and what do you mean reset the camera?


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Joe
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Jan 25, 2018 20:51 |  #7409

lijoec wrote in post #18549023 (external link)
Maybe I'm expecting to much. I guess I have to keep plugging away to find what I can reach and can't. Thanks for the help. Oh and what do you mean reset the camera?

Set the camera back to default settings.


Jeff ........, 7D, 70-300L, 100-400LII
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LJ3Jim
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Jan 25, 2018 20:55 |  #7410

lijoec wrote in post #18549009 (external link)
It was very cold, and very clear. 35% humidity. Could it have been the wind? Would wind have and effect on the distance?

Atmospheric issues aren't usually caused by wind; they are more related to different temperatures. If "very cold" is 10 degrees, then you have quite a difference with the water because it's at least 33. The cold air is very dense. As it gets near the water, it warms and rises. This causes heat currents in the air (everyone has seen those coming off a road on a hot day). It's the heat currents that cause the atmospheric problems.

That said, I had a 7D2 for a while and it gave me fits. Great photos sometimes, and poor at other times. I could shoot a fence post 5 times in a row and get 1 or 2 bad ones. I went for the 1DX2 hoping to fix that, and it did. Now I have great consistency, but still have to cope with atmosphere.


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