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Author Topic: Autofocus of 50D/7D with 2x III TC and 70-200 2.8 IS II for sports  (Read 5792 times)

Nate

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Hi,

I shoot with a 5D mk III and I need a second body for sports.
Mainly what I need is to shoot powder skiers/snowboarders coming down on the hill, and I shoot them or from the bottom of the mountain or from helicopter.
I know the best results would be with a 600 lens but I dont have it.
I was thinking that maybe the 400mm is not enough (5D3 2x TC III 70-200) so to buy a second used body.

Among crop bodies with one has the best auto focus and pretty good fps?

Any experience with that setup ether sport or wildlife? (50D/7D 2x TC III and 70-200 IS II)
If someone has some samples with that setup, please post them.

Cheers!
5D3, 17-40 mm L, 24-70 mm L, 70-200 2.8 IS II, 50 mm 1.4, 2x 600EX-RT

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kaihp

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Re: Autofocus of 50D/7D with 2x III TC and 70-200 2.8 IS II for sports
« Reply #1 on: August 14, 2012, 07:23:42 AM »
Among crop bodies with one has the best auto focus and pretty good fps?

Any experience with that setup ether sport or wildlife? (50D/7D 2x TC III and 70-200 IS II)
If someone has some samples with that setup, please post them.
I have had rather disappointing experience with my 50D and 70-200mm IS MkI, when shooting motorcycle racing (ie fairly small focus areas, with erratic movement pattern).

The 7D has a vastly more advanced AF system where you can link neighboring AF points to the main AF point - something the 50D/60D cannot do. The 7D also have a deeper burst buffer and a 8fps vs 6fps on the 50D. The 7D feels much more responsive than the 50D.

In short: pick the 7D.

Peerke

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Re: Autofocus of 50D/7D with 2x III TC and 70-200 2.8 IS II for sports
« Reply #2 on: August 14, 2012, 07:45:52 AM »
Among crop bodies with one has the best auto focus and pretty good fps?

Any experience with that setup ether sport or wildlife? (50D/7D 2x TC III and 70-200 IS II)
If someone has some samples with that setup, please post them.
In short: pick the 7D.
+1

And while you're buying the 7D, pick up a 400 f/5.6 too. Same range as your combination, but fast, very fast AF.
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mws

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Re: Autofocus of 50D/7D with 2x III TC and 70-200 2.8 IS II for sports
« Reply #3 on: August 14, 2012, 08:31:26 AM »
The 7D has much better auto focus then the 50D, but depending on were you are budget wise, you can get a used 50D for cheap.

Nate

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Re: Autofocus of 50D/7D with 2x III TC and 70-200 2.8 IS II for sports
« Reply #4 on: August 14, 2012, 08:34:34 AM »

And while you're buying the 7D, pick up a 400 f/5.6 too. Same range as your combination, but fast, very fast AF.


Yes that looks good! I forgot about this option ;D
I might go with 5D3 2x TC and 400mm

I still wait for some samples, however this looks good! :)
5D3, 17-40 mm L, 24-70 mm L, 70-200 2.8 IS II, 50 mm 1.4, 2x 600EX-RT

tron

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Re: Autofocus of 50D/7D with 2x III TC and 70-200 2.8 IS II for sports
« Reply #5 on: August 14, 2012, 09:00:18 AM »

And while you're buying the 7D, pick up a 400 f/5.6 too. Same range as your combination, but fast, very fast AF.


Yes that looks good! I forgot about this option ;D
I might go with 5D3 2x TC and 400mm

I still wait for some samples, however this looks good! :)
You cannot add any TC to the 5D3 400mm f/5.6L combination to use for sports! It will simple not focus at all if it the TC is a Canon one and it will rather struggle with a 3rd party TC. Certainly not with a 2X 3rd  party TC!

And the f/8 (400mm f/5.6L + 1.4X) or f/11 (400mm f/5.6L + 2X) do not help for sports too...

Nate

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Re: Autofocus of 50D/7D with 2x III TC and 70-200 2.8 IS II for sports
« Reply #6 on: August 14, 2012, 09:15:56 AM »
:( so it still remains the first option...

Thanks for the information
5D3, 17-40 mm L, 24-70 mm L, 70-200 2.8 IS II, 50 mm 1.4, 2x 600EX-RT

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Re: Autofocus of 50D/7D with 2x III TC and 70-200 2.8 IS II for sports
« Reply #6 on: August 14, 2012, 09:15:56 AM »

kaihp

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Re: Autofocus of 50D/7D with 2x III TC and 70-200 2.8 IS II for sports
« Reply #7 on: August 14, 2012, 09:33:43 AM »
Remember that the 7D & 50D with a 400mm lens will effectively be 640mm FF.

Shooting with a 400mm on a crop body requires you often to look over the camera to first spot the skier, and then "dive in" to find the skier in the viewfinder. If you have too much sideway motion, you often have the subject to move past the viewfinder before you can react. Then you pan to "catch up".

But the 400mm/5.6L is very nice due to it's size and weight. The f/4.0 and f/2.8L are quite big and heavy. And costly.

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Re: Autofocus of 50D/7D with 2x III TC and 70-200 2.8 IS II for sports
« Reply #8 on: August 14, 2012, 09:55:11 AM »
The 1D Mark IV is actually the best choice here, but that may well be out of your budget.  The effective crop is much better on this than a 7D, despite being 1.3 vs. 1.6.  It focuses faster and has a much better AF system than either the 7D or 50D.  However, it's still running right around $4k, so probably wouldn't be practical.  In that case, you can win with a 7D.
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tomscott

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Re: Autofocus of 50D/7D with 2x III TC and 70-200 2.8 IS II for sports
« Reply #9 on: August 14, 2012, 10:26:22 AM »
What about a 100-400mm? Get a bit more flexibility.

What about a 300mm F4 with a 1.4x extender? on a 7D will be 672mm at 5.6 But the 400mm F5.6 will be faster focusing and at 640mm not gaining much and the 400mm will be cheaper than the 300mm combo.

I think the 100-400mm or 400mm F5.6 on you 5D MKIII will be most cost effective. You can always crop a little bit with the 5D MKIII anyway. But it is a nice option to have 2 bodies.

I would skip the 50D a good second hand one in the UK is about £500-550. A 7D is around £900 and is better in everyway. The 50D has worse IQ than the 40D because of the pixel density being a 3rd more but the same tech. Also noise is horrible too. The 9 point of the 40/50D is pretty old too for fast action. Im still using a 40D with a 5D MKIII coming soon. But if anything if you want a cheap alternative get a 40D they are about £350 now still produce great images. But 7D every time, but the 1D IV would be the ultimate.

You also have to remember that a 70-200mm with a 2x extender reduces the AF speed significantly so a 400mm F5.6 is always going to be better.
« Last Edit: August 14, 2012, 10:29:04 AM by tomscott »
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wallybarthman

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Re: Autofocus of 50D/7D with 2x III TC and 70-200 2.8 IS II for sports
« Reply #10 on: August 14, 2012, 11:55:32 AM »
Your other option is a 40D - it's even cheaper than the 50D and has the same AF system.  Obviously the 7D is a better all around camera but it's almost three times as much as a 40D.

I'd second the 300 f4L IS USM + 1.4x TC option.  It's a decently fast set up and gives you the wider option of 300 as well as the longer reach of the 420.

heptagon

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Re: Autofocus of 50D/7D with 2x III TC and 70-200 2.8 IS II for sports
« Reply #11 on: August 14, 2012, 12:31:41 PM »
The 70-200 L IS II with 2x III TC would certainly work but you will need to shoot at f/8 and need lots of light. AF performance also depends on the light level. I don't know of a direct comparison between this combination and the 400 F/5.6 and the 100-400L or the 300L F/4 + 1.4x TC. If you get a good sample of each one, the image quality at F/8 will be satisfying and the prices are in a comparable range.

But long focal lengths are very hard to master and due to light constraints you may not be able to shoot at F/8 anyways and need something faster. Then it might be considerable to start with the 1.4x TC for the 70-200 you already have. This combination is certainly very good at F/4 already.

Using a crop camera is always a better choice than a teleconverter or a mediocre lens.

Only if you can't get further with cropping you might consider getting a longer lens. Before you go for the 400L F/5.6 check if you can live without IS. The 300L F/4 and 100-400L also only have mediocre IS compared to the 70-200 you have.

Richard Lane

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Re: Autofocus of 50D/7D with 2x III TC and 70-200 2.8 IS II for sports
« Reply #12 on: August 14, 2012, 12:59:07 PM »
Hi,

I shoot with a 5D mk III and I need a second body for sports.
Mainly what I need is to shoot powder skiers/snowboarders coming down on the hill, and I shoot them or from the bottom of the mountain or from helicopter.
I know the best results would be with a 600 lens but I dont have it.
I was thinking that maybe the 400mm is not enough (5D3 2x TC III 70-200) so to buy a second used body.

Among crop bodies with one has the best auto focus and pretty good fps?

Any experience with that setup ether sport or wildlife? (50D/7D 2x TC III and 70-200 IS II)
If someone has some samples with that setup, please post them.

Cheers!


Nate, That Sounds Awesome!

The 7D would be a great 2nd body for what you want to do.  It has the reach, and a very good AF system. I've shot some skiers coming at me in the middle of the mountain, so I didn't need the reach that you're talking about, such as shooting form the bottom of the hill or helicopter.  But, one thing that I would add, is that when you're shooting from that far away, the AF system should have time to focus, as opposed to shooting "on the mountain" and having a ski racer busting by a gate.

With a zoom, you will have a greater oppurtunity to shoot the skiers for a longer period of time.  First you'll zoom in all the way and as the skiers approach you, you will zoom out to get more shots as you keep them in your viewfinder longer.

With a long fixed lens, you will have the skier in and out of your FOV fairly quickly, unless of course you're shooting for the purpose of a particular jump or drop-off.

Actually, the 200-400mm +1.4X@560mm would be perfect for this.  However, it's not out yet and I'm sure it will be very expensive.  The other choices I would consider would be the 100-400mm, or the 70-200mm with 2X as you mentioned.  The 70-200mm is better at the shorter end and the 100-400 is better at 400mm.
The AF is probably faster on the 100-400 since it doesn't have the extender. I don't own the 100-400, but I do own the 70-200 II and 2X. Like I mentioned above, if you're that far away from the skiers (bottom of hill or helicopter), then I don't think the slower AF with the 2X will matter.  I will add that IS may help in the helicopter, although I'm not sure, as I've never shot out of a helicopter before.

I probably wouldn't buy the 100-400 just for this if you already own the 70-200+2x (probably better weather-sealed), since they're fairly close enough.  I would consider a 100-400II if that ever comes out.

http://www.the-digital-picture.com/Reviews/ISO-12233-Sample-Crops.aspx?Lens=687&Camera=453&Sample=0&FLI=7&API=2&LensComp=113&CameraComp=453&SampleComp=0&FLIComp=7&APIComp=0

I'll see if I have any 70-200mm II +2X action shots when I get home tonight.

Rich

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Re: Autofocus of 50D/7D with 2x III TC and 70-200 2.8 IS II for sports
« Reply #12 on: August 14, 2012, 12:59:07 PM »

Skulker

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Re: Autofocus of 50D/7D with 2x III TC and 70-200 2.8 IS II for sports
« Reply #13 on: August 14, 2012, 01:26:29 PM »
I have the 7D and the 70-200mm Mk2, and a 2x MK111.

I would not normally use those three together. It wont be that fast focusing. In fact shooting bikes on the IoM at the TT I would prefocus and take the shot when the bike got there. For snowboarders I think the 7D and the 70-200 would be good. Its a pretty fast, bright, sharp combination.

I also have a 1Dx and understand the 5D111 is pretty good on auto focus etc. My first choice from your kit for snowboarders would be the 5D with the 70-200 and if you can't get close stick the 2X on as well. I find I can crop much harder on the FF and still get better results than I would with the 7D. Dont think the 7D is poor, but its not the same as the next generation.

Hope this helps.

Halfrack

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Re: Autofocus of 50D/7D with 2x III TC and 70-200 2.8 IS II for sports
« Reply #14 on: August 14, 2012, 02:53:08 PM »
:( so it still remains the first option...

Thanks for the information
Don't worry too much - helicopter time is more expensive.  If you can swing it, there is/will be a lot of the 400/500/600mm lenses for sale used.  Otherwise do what everyone else does, rent and build in the cost.

Besides, this winter is supposed to be crap on the pow... :(
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Re: Autofocus of 50D/7D with 2x III TC and 70-200 2.8 IS II for sports
« Reply #14 on: August 14, 2012, 02:53:08 PM »