Remote follow focus for £150/$300

hoarp001

Veteran
Hi,

I was frustrated with the remote follow focus systems available for us indie film makers, so I built myself a pretty run and gun, but none the less effective remote follow focus. Having used this system on a film I was steadicamming on, the focus puller, DOP, camera ops etc etc all thought my system was pretty good, and infact easier to use than the physical follow focus. My system has absolutely NO play what so ever.

I intend to sell these to the indie filmmaker and I would like to keep the cost to £150/$300, which includes the motor. The motor uses an RC servo, like the foveas system. This is actually a very smooth and reliable way of pulling focus, my system is reliable enough to repeat marks accurately. The servo i am using has been specially selected and modified by me to be as quiet as possible, it does however still whine a little bit when its going full pelt.

This system is fairly no frills. It dosnt have the programable positions like the foveas, but it is well built and it will last, reliable, and for 150 quid, I cant really build in the programable side of things.

The unit is in a rugged aluminum case, anodized black. It takes four AA batteries, which are housed in two tube style battery holders on the bottom. There is an on/off switch at the top and an indicator light. There will also be an illuminator for the marking ring.

Heres the downside. This is the reason why this system is £150 and not thousands.

Get ready:

THIS IS NOT A WIRELESS FOLLOW FOCUS SYSTEM

Yes, its a shame, and I wish I could make a wireless sytem, but for £150, its the only way to make it properly with proper materials and make it last. As a steadicam operator having used the prototype model, the fact that it is wired is not much of a problem, as the focus puller can follow along with me, judge distances and see my monitor. The wire also dosn't affect the steadicam much either.

I have tried to make the wired system as universal and painless as possible, and the controller and motor connect using a standard stereo jack cable, like the sort of thing you would connect the sound card to the speaker system on computers. These cables can be bought cheaply, so you can afford to have lots of differnt lengths, and they are easy to make your own. you can join them up with standard audio connectors.

So, in summary:

I am offering a reliable, repeatable remote follow focus in a durable aluminium case with motor including a 0.8mod gear for 35mm lenses and SLR lenses in a flightcase for £150.

Here is a photo of the prototype unit. Please note that the marking disk in this photo is actually a piece of paper, I am waiting for the CNC shop to cut the disk out of white acrylic. This photo also shows the follow focus without the cap on the top of the knob. It will have a matt finish domed knob over the top to hide the locking nut.
rff.jpg


If you are interested and would like to reserve one or something then let me know. I have three reserved so far.
 
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Yeah, bear in mind the one in the DIY section is very rudimentary. It will have a nice slick aluminum case, knobs and lights, proper plugs and the motor is quieter with a better drive gear and a proper mount.
 
Well its a possibility. There will be no electronic gizmos built in to do this, as I mentioned.

I am still debating over two knob systems, the first which is cheaper, easier to build and more robust is to have the marking disk static and the knob with a point moulded in. You then make your marks on the mark ring, then pull the knob to those marks, but the ring is always static. using this technique its quite possible to use a hard stop that the point on the knob stops up against.

The other system is to have the marking disk attached to the knob and have a reference point on the case. This is more true to the traditional follow focus, but since these knobs are not available off the shelf, making them would be costly, and would be no where near as durable as the alternate system mentioned above.

I will devote some time and thought and think out a viable way to do the hard stops for you, I think it is important.
 
You pretty much will have my money, just want to know a bit more about it and see it in action. Really good work. What ff rings do you suggest to go with the motor (I'm using zooms so might need largish ones)?
 
Any FF ring you have, its 0.8mod / 32pitch which is standard across all 35mm adapter rings for SLR lenses and also the gears built into PL mount lenses. The ones I use are the SGpro rings, but any of the others will work fine.

Im just doing some R&D and prototyping, I hope to have the unit looking finished within the next two days or so, its then just a case of sorting out the electronics and the motor drive.
 
Will this version be quieter than the youtube link in your diy section thread? If it is quieter, would it be quiet enough for on cam mic?
 
Interested if it performs relatively good. Better hurry before Redrock Remote is released for $500.

What kind of time frame are we looking at?
 
Im hoping to have it ready within a month.

The completed version will be much quieter than the one in the video....
 
Hi,

Heres some updated photos. There will be an indicator light on top, but the parts I need havnt come yet, so its just a hole with some wires hanging out of it. Obviously wont be when its done.

rff2.jpg

rff3.jpg

rff4.jpg
 
Wait a second... are you the neighbor from Home Improvement?

Anyway mate, I'm 99 % in.
 
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