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#1 |
Major Player
Join Date: Mar 2007
Location: Canada
Posts: 294
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A1 manual focus/IAF button technique
I'm wondering about best techniques for focusing on the fly.
I'm still struggling with this. With one hand on the monopod, that leaves the one hand free for all adjustments. I'm finding I'm relying more on the focus ring and using the IAF button far less as with my hand on the ring, I have to move it too unnaturally get to that button. But in situations where you're trying to capture bits of conversation or action in various parts of a large room in a documentary style setting there are always a few seconds lost adjusting the ring. (or at least for me as I tend to pull it out of focus a bit more before I move into the correct position) I'm thinking I may need to rethink my approach. I have a tendency to want it perfectly sharp - fine when you have time to set something up proper, not so good when you're on the fly. Wondering if anyone has hints, tips or approaches to how they deal with this. So far I've stayed away from Autofocus almost entirely (in fear of the dreaded focus hunting footage) but I'm not sure if this is too strict at the expense of getting the shot in unpredictable situations. Or should I just retrain to have one trigger finger ready on the IAF button at all times. any advice would be greatly appreciated. Trish |
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#2 | |
Inner Circle
Join Date: Sep 2006
Location: Sydney.
Posts: 2,896
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Quote:
Cheers. |
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#3 |
Major Player
Join Date: Jul 2007
Location: Gainesville, VA, USA
Posts: 327
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Trish,
Are you using a wide focal length? Or are you zommed in a bit? How far are you from the subjects? Are you a lefty?
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Canon XH-A1, Libec LS-55M, Letus Extreme, Steadicam Merlin, PPro CS3 |
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#4 |
Regular Crew
Join Date: Jun 2006
Location: Austin, TX
Posts: 122
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Trish, I feel your pain, I too am manual all the way, but for those quick shots its tough to quickly get HD for sure in focus. I have been trying to train my finger to find that IAF button but its kinda in a weird place. One solution I was thinking about was adding something to the button so it is more apparent to my fumbling hand.
It would be cool if the AIF button was on the manual focus ring. |
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#5 |
Major Player
Join Date: Dec 2006
Location: Los Angeles, CA
Posts: 959
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Just remember the IAF button is just above the shutter wheel, which obviously has a distinct feel. After studying & getting used to all the different textures & locations of the buttons, etc., I can pretty much locate all blindfolded quickly. Pretty much I said :)
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#6 |
Major Player
Join Date: Oct 2007
Location: London, UK
Posts: 795
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Same problem too when using with my fig rig but worse: it needs two hands.
I don't understand why Cannon dropped push autofocus via a lanc controller on the A1. My XL1 and Sony A1E did it. :-( |
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#7 | |
Trustee
Join Date: Dec 2006
Location: Central Coast - NSW, Australia
Posts: 1,606
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Quote:
I thought the ZR200 Lanc controller worked with the A1 - it's got push AF |
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#8 | |
Trustee
Join Date: Dec 2007
Location: Glasgow, Scotland
Posts: 1,546
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Quote:
If you go the wrong way first more often than not you could always try reversing the direction of the focusing ring. |
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#9 |
Go Cycle
Join Date: Dec 2001
Location: Huntington, NY
Posts: 815
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I use a LANC controller which has foucus controls. Since this camera allows a manual overide in AUTO, I have never had a problem tweaking any slightly off focus with my VARIZOOM.
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Lou Bruno |
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#10 | |
Major Player
Join Date: Mar 2007
Location: Canada
Posts: 294
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Quote:
Sounds like most people are sticking to manual and are utilizing the IAF button far more than I've been. At least the subject would gracefully come into focus with this approach - I'd better start working harder at locating it blind. The button would have been great on the ring indeed! Colin I am going to try practicing turning the ring opposite. Shiv Fully zoomed out it's not as much of a problem focusing - it's more if you are quicky zooming in to a med or more shot from say 5-10 feet away. Fig rig - is the ZR200 the best lanc control as of now? I didn't think any of them worked on the IAF button. thanks for all the tips and comments so far everyone. Very much appreciated. I'm finding the more I film, the more picky I get. : ) Originally it was enough just to hold it straight. trish |
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#11 |
Major Player
Join Date: Mar 2006
Location: Las Vegas, NV United States
Posts: 361
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Lou,
which Varizoom do you use? I have never used a zoom control, but intuitively they seem they would work well for ZOOMING in and out... However, I just haven't convinced myself that very fine gradations in focus, especially HD could be done using a LANC... would you please elaborate? (there just seems to be something so organic about grabbing a lens and smooth focusing - can you do this with a LANC - that smooth slow or ramp focus?) Thanks Lou, Lonnie
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Lonnie Bell mamas boy productions Las Vegas, NV |
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#12 |
Go Cycle
Join Date: Dec 2001
Location: Huntington, NY
Posts: 815
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Lonnie,
I am using the VZ STEALTH attached to my DV RIG. I can assure you that it works like a charm. We are lucky to have a camera that allows the AF to be overidden manually. All I do is slightly tap the focus control if I am a "little" out of focus and I can get a PERFECT focus. When using the peaking and magnifier it really helps....but I only use the peaking feature.
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Lou Bruno |
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#13 |
Major Player
Join Date: Mar 2007
Location: Canada
Posts: 294
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forgive if this is a dumb question - haven't used a controller yet - do you keep the camera on manual focus when the lanc is attached or does it disable all related functions anyway once connected?
Trish |
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#14 |
Major Player
Join Date: Dec 2007
Location: Pembrokeshire, Wales
Posts: 734
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Hi Trish
You can keep the camera set up just as you like it, the lanc doesn't interefere with existing settings, it is just used in addition. You can go back to using the on camera controls even with the lanc attached. The best thing with a lanc is that you don't get a judder when pressing the record button, the way you often do if you press the on-board record button with the camera on a tripod. My ultra-cheap lanc stopped working (after five years) and I can see immediately which shots were taken after it stopped working. Now I have to decide if I get another cheap one, or dig out some spare cash for a more sophisticated one.
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Canon XH A1; Canon XF100; Nikon D800 Last edited by Annie Haycock; March 22nd, 2008 at 04:02 PM. |
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#15 |
Major Player
Join Date: Jul 2007
Location: Gainesville, VA, USA
Posts: 327
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Right, that's was I was getting at :).
I think you should practice with both auto as well as manual. Most conditions indoors will allow manual focus to work just fine especially when wide or medium (I've found). It's when the iris is stopped down due to bright light that the auto focus has a hard time. Besides, you can still use the IAF button when autofocus is on. So you get the best of both worlds.
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Canon XH-A1, Libec LS-55M, Letus Extreme, Steadicam Merlin, PPro CS3 |
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