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Are there any Canon telephoto zoom lenses that have hard stop focus rings?
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The problem is you have no hard stops (Physical stops so the lens can’t turn). If you accidentally bump the focus ring or turn it, you are off.
Warren Eig
O (424) 293-1164email: info@babyboompictures.com
website: https://www.BabyBoomPictures.com
Vimeo: https://vimeo.com/babyboompicturesFor Camera Accessories – Monitors and Batteries
website: https://www.EigRig.com -
Okay thanks, but a follow focus only has two hard stops right? One at end of the follow focus, and one at the other, right? What if in order to focus on an actor, you had focus to a point on the follow focus where there is no hard stop? What difference does having hard stops make, if actors are at points on the follow focus where there are not hard stops, at, what then?
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Because you never used a follow focus. You use the hard stops to set the limit of the entire focus range: Closest and furthest the lens will focus so it won’t keep turning. (Canon EF lenses can turn forever)
Then the there is a white ring you can mark with a dry erase marker to mark your focus points. It is how we do it in Hollywood on big million dollar productions. They don’t use the hard stops to mark the actors.
On a real cine lens, the lens can’t turn past either extreme (close, far) Canon EF lenses have an infinite turning focus ring so you need to put a hard stop at both extreme points so it won’t turn beyond either point.
Warren Eig
O (424) 293-1164email: info@babyboompictures.com
website: https://www.BabyBoomPictures.com
Vimeo: https://vimeo.com/babyboompicturesFor Camera Accessories – Monitors and Batteries
website: https://www.EigRig.com -
Okay thanks, I’ve done that before, marking where the actors are to focus. But the problem is, is that the fly-by-wire lens is causing problems, when hitting the mark. When I hit the mark, the lens will choose to go from macro to infinity when I don’t want it to.
I was watching this video on it, and he says that is what is happening with a fly-by-wire lens:
https://www.youtube.com/watch?v=j9ZNHQNq0io&t=2s
In the video he says that when you try to pull the focus, it goes from macro to infinity when you do not want it to cause it’s a fly-by-wire focus ring on the lens. And since that is a problem with fly-by-wire rings, no follow focus with hard stops will correct that because the lens will still go from macro to infinity when you do not want it to, regardless, of whether or not the follow focus has hard stops or not it seems. So what I mean is, what do you about the lens going from macro to infinity, even with a follow focus?
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This is absolutely not true on Canon 5d MKIII there is no auto focus in video mode so the focus does not change until you change it. What camera are you using? does it have auto focus in video mode and do you have it turned on?
I’ve been doing this for years with my Canon EF lenses and it does not go to infinity automatically.
I’m signing off now. I’ve explained it to you. Try it or don’t but it works.
Warren Eig
O (424) 293-1164email: info@babyboompictures.com
website: https://www.BabyBoomPictures.com
Vimeo: https://vimeo.com/babyboompicturesFor Camera Accessories – Monitors and Batteries
website: https://www.EigRig.com -
I was testing it out on the Canon T2i, but will use a better Canon camera for actually shooting the actual project I want. Basically the focus points I make on the follow focus are not the same. Point A, is no longer A, but a little past point A when I rack focus for example. I was told it was because it’s a fly-by-wire lens, and fly-by-wires do not hold the exact same marks when you want to rack focus, if that’s the problem, which it seems to be.
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