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Canon EOS Full Frame for HD
All about using the Canon 1D X, 6D, 5D Mk. IV / Mk. III / Mk. II D-SLR for 4K and HD video recording.


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Old March 21st, 2010, 01:19 PM   #16
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Originally Posted by Harry Simpson View Post
How? How do you keep such great focus while shooting at what looks to be wide apertures? Seems like with the glidecam it's be hard to keep the subject in focus. Heck on a tripod I have a tough time. What's the secret?
Basically wide angle lenses help a TON!! I'm almost always shooting on the glidecam with the 16-35 shooting somewhere between 16-24. I set the focus to infinity and then FLY AWAY ;)
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Old March 21st, 2010, 05:26 PM   #17
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Say with a 24-105 f4L at 24 setting focus to infinity is gonna make the whole band 5 feet away out of focus. I could see this working with landscape shots but close in even with wide angle I have problems.
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Old March 22nd, 2010, 02:44 AM   #18
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Originally Posted by Harry Simpson View Post
Say with a 24-105 f4L at 24 setting focus to infinity is gonna make the whole band 5 feet away out of focus. I could see this working with landscape shots but close in even with wide angle I have problems.
It all depends on your aperture. Stop down to F8 & at 24mm you are in focus from 4ft to infinity. Using the 16-35mm zoom as Michael is then you can have even greater depth of field. At 16mm even at F5.6 you are in focus from a tad over 3ft to infinity.

What get's much more difficult is when you want to work with a very narrow DOF e.g. at 24mm & F8 if focused on a subject at 3ft the DOF is between 2.2ft & 4.8ft i.e. 2.6ft (less than 1m). Charles Papert posted on here recently recommending that aspiring Steadicam operators consult DOF calculators when planning shots.
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Old March 22nd, 2010, 12:06 PM   #19
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I keep a set of general charts in our three camera bags based on our average prime FL 28mm, 50mm, 85mm, etc. I have print outs of DOF and hyperfocal for these lenses from their lowest aperture 1.2/1.8 through a range of these average stops - 2.8, 4, 5.6, 8, 11

It's a good reference for shallow DOF closeups, tracking moving subjects etc. on the fly.
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Old April 12th, 2010, 10:21 PM   #20
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Wonderful advice on the DOF charts which I've not visited in years.....now i really need them!! DoF Calculator for the iPhone has been super help.
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