September 19, 2014, 06:27:09 PM

Author Topic: Configuring your 5D Mark III AF for fast action  (Read 13866 times)

tron

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Re: Configuring your 5D Mark III AF for fast action
« Reply #60 on: April 04, 2014, 07:06:23 PM »
Keep in mind that a piece of advise from the article didn't work for me. At least at some non real shooting conditions.

More specifically:  I have tried my 1.4XIII on my 500mm 4L IS II.

Nothing happened apart from the noise of a failed  attempt to start focusing.
Something like a click and a very slight move of the focusing mechanism and then nothing.
Focusing distance was close and withing range (inside my house).

I turned "Lens drive when AF impossible" to ON and IT WORKED!

But to tell the truth I haven't tested the lens without a teleconverter and/or at the outside during day.
So I will repeat the test under more realistic conditions.

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Re: Configuring your 5D Mark III AF for fast action
« Reply #60 on: April 04, 2014, 07:06:23 PM »

cervantes

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Re: Configuring your 5D Mark III AF for fast action
« Reply #61 on: April 09, 2014, 06:55:13 AM »
Hi.

Tomorrow I'll shoot some action and I'd like to ask for some advice. Not BIF, but kayak competition (slalom). I suppose you imagine how does it look like.

I'd like to ask, if you recommend to shoot in single shot or continious mode? if the latter, then in which mode - high burst (6 fps) or low burst (3 fps).  BTW, I'm using 5D mkIII.

And what should be an appropriate shutter time to freeze the motion? OK, it depends if subject goes toward me or pass me. I think, I'll shoot them coming toward me. But OK, I can experiment and check what time is necessary to freeze it.

I'm more interested about burst mode. I don't want to have million pictures and half of them soft, because AF wasn't able to refocus between each shot in 6 fps mode.

Thanks

Hi,

I'm sorry I didn't check canonrumors for a couple of days so I'm too late now for your question but maybe you still want some info for next time.

I'm not quite sure how a kayak competition looks like but it sounds to be quite slow action. Burst will likely work fine but I wouldn't recommend the settings I described in my article because they are for very fast moving / erratic subjects.

The way I always do action photography is setting my drive mode to high burst (6fps) but then I always shoot single frames by briefly pressing the shutter. If a situation arises where the distance between me and the subject doesn't change much but something interesting is happening I always have the option to make shots in quick succession.

Shutter speed is quite easy to determine: Start at 1/1000 and look how it turns out. Use the fastest possible speed that lets you shoot at ISO 100-800 (the lower the better of course). To freeze the water droplets something shorter than 1/2000 would be desirable.

cervantes

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Re: Configuring your 5D Mark III AF for fast action
« Reply #62 on: April 09, 2014, 07:04:09 AM »
Keep in mind that a piece of advise from the article didn't work for me. At least at some non real shooting conditions.

More specifically:  I have tried my 1.4XIII on my 500mm 4L IS II.

Nothing happened apart from the noise of a failed  attempt to start focusing.
Something like a click and a very slight move of the focusing mechanism and then nothing.
Focusing distance was close and withing range (inside my house).

I turned "Lens drive when AF impossible" to ON and IT WORKED!

But to tell the truth I haven't tested the lens without a teleconverter and/or at the outside during day.
So I will repeat the test under more realistic conditions.

Are you sure you understand what "Lens drive when AF impossible" means? If the subject was vastly out of focus the AF is supposed to not do anything so that it doesn't throw off focus even further. You should at least be able to easily recognize the subject in the frame before you start attempting to focus (this is more or less also the cameras criterion for starting to focus - when it can immediately determine in which direction and how much it has to adjust focus). Also when you tested inside in dim light with a converter I'm not surprised that it did not work.

Yes, please repeat the test under sufficent light and be sure to pay attention to my remark above - I'm sure it will work just fine.

climber

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Re: Configuring your 5D Mark III AF for fast action
« Reply #63 on: April 09, 2014, 09:46:03 AM »
Cervantes, thank you for your reply. Here you can see three of my shots that day - http://www.canonrumors.com/forum/index.php?topic=20239.0  At the bottom.

It's not so slow movemnet, actually is quite fast. I shot this with 6 fps (of course not like a machine gun, maybe only 3-4 shots)

The setings were: f/2.8, 1/2500 s and ISO 160-250

cervantes

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Re: Configuring your 5D Mark III AF for fast action
« Reply #64 on: April 10, 2014, 01:33:59 AM »
Cervantes, thank you for your reply. Here you can see three of my shots that day - http://www.canonrumors.com/forum/index.php?topic=20239.0  At the bottom.

It's not so slow movemnet, actually is quite fast. I shot this with 6 fps (of course not like a machine gun, maybe only 3-4 shots)

The setings were: f/2.8, 1/2500 s and ISO 160-250

Congrats, they turned out great!

Quote
I shot this with 6 fps (of course not like a machine gun, maybe only 3-4 shots)

That's what I would do in this situation. 1/2500 was perfect to freeze the motion of the water.

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Re: Configuring your 5D Mark III AF for fast action
« Reply #64 on: April 10, 2014, 01:33:59 AM »