Follow focusing still lenses... (the real scoop)

[Finner]

see, that's the tricky part. Look at the first image in this thread. Noticed the HUGE gaps between the close distance, and the relative space between 10 and 15 feet - i don't think a gear, unless maybe its ellipsoidal, won't help much.

All cine lenses have different throw distances for the closer distances as compared to the 10-15-20 feet range. None have equal distances of focus travel between feet. You are safe because of depth of field rules.

 

[chuck colburn]

see, that's the tricky part. Look at the first image in this thread. Noticed the HUGE gaps between the close distance, and the relative space between 10 and 15 feet - i don't think a gear, unless maybe its ellipsoidal, won't help much.

My general question is if cine lenses have even placed focus marks that don't ramp up in distance like these SLR lenses do?

It doesn't matter if it's a still camera or a cine lens. The spacing between the marks is a function of focale length. And the overall throw of the focus barrel.

 

[Jim Hoffman]

I guess I am not fully understanding your question so let me try this a different way.

In a cine application, you need to have the lens stopped down 'all the time'. It's not like a still SLR application where the lens is wide open unless exposing the frame or if the depth of field preview is used. The still application is a non-continuous use, cine is a continuous use. The exception, where both are effectively the same is when you set the lens to its minimum numeric f or t-stop (wide open).

Thanks - I know I'm not being very clear here - my question is more of a mechanical question (not aplication) about the Nikon adapter and older Nikon lenses - I am almost answering it myself because I can't see how the adapter would work with older lenses if somehow RED didn't allow for the non-activation of the switch on the mount... Sorry I kind of took this thread off topic.

 

[Steven Parker]

I have mentioned in the offtopic thread the solution I've been working on for a while now. It will have reversible directions, wireless add-on module, and you will be able to choose your own preferred rotation on the FF wheel for your own focus zones in the current shot. The optimal hand movement for the specific focus range.
Also, you won't need to draw lens markings, because you will be able to input them on the display for each individual lens. When changing lens you'll just recall your saved markings. These will not be all the features.

Omen, that sounds pretty slick... when's the demo?