Frage von Frank B.:
Hello Forum,
I would like to take time for the long winter evenings a little tinkering;). I would like to build a follow focus itself. A rig and a matte box I've already brought about. Please do not laugh and frown. I know my parts will be sure not just professional. However, I'm working very amateur and ask. Will try stop times, which goes like this.
So my problem: I've never been a part of (; follow focus) had in his hand does not know and in which over-or under-setting it to work. So if I follow the Wheel Focus rotate once on its axis, how far should then turn the focus ring of the lens. A turn or less, or better yet more? Have the professional parts actually a kind of gear, that is adjustable Über-/Untersetzung?
Am grateful for some tips.
Antwort von WoWu:
Hi Frank
It all einwenig of from the camera.
In a Chrosziel s.einem Funjinon Lens you've got something more than half a turn to cover the total area of focus. for the wheel is sufficiently large to achieve a fine adjustment.
Now you can reference to the teeth (number of teeth) s.Objektivs and figure out the translation.
Also you have to see if you still using an idler gear to reverse the direction of rotation of adjustment wheel, because it requires strong habituation to draw the focus to the movement direction of the object. An intermediate change this
Another tip: buy yourself at E-Bay any old lens, a motor control unit is s.dem. it is sometimes for 10 EUR, if the glasses are vergurkt or the Mount is exotic. In the drive you'll find lots of useful components (gears and bearings, etc) that have the right gear. This might help and if you sent it in place, it could even be a motor-powered FF, I do not know how long the winter evenings are :-))).
Antwort von Frank B.:
Thank Wowu to help me next time already! It may be that is larger or smaller with a different lens of travel?
... I do not know how long the winter evenings are :-))). At the moment not so long - today I had to do as much, came back home late and am only now coming to the answers.
A motor drive, there will be no good. Not out of lack of time, but rather for reasons of lack of know-how;) Bin Although a trained mechanic, but of electronics and electrics to have little idea about me s.solch to trust a drive. The whole thing has to start and stop so precisely synonymous. Ne too big for me.
It's going to be purely mechanical. The tip with the lens but is still great, would think about it.
My device, the rotation is likely not to transmit through the gears, but with a toothed belt directly to the lens ring. I've tested a few times and timing belt ever worried their grip on the lens ring my FX first It would work out. slipped a foot at the timing belt on the focus ring does not it. It is clear to me that the FX1 is not the ideal camcorder for a follow-focus system is because the lens is not directly mechanically runs, but by servo motors and synonymous has no stop. I am planning for the future but the purchase of a second GH 'm Currently holding the FX1, with the test I can. The with the direction I have to try it out, which is s.besten. I can build the angle drive account yet. So far, everything is still in the planning.
Antwort von WoWu:
Hi Frank ...
thanks for the message ... in any case I wish you a lot of fun. If I can help even more or you need more info ... anytime.
Antwort von Frank B.:
... in any case I wish you a lot of fun. If I can help even more or you need more info ... anytime. Super, thank you, we'll see how it goes then.
Antwort von Korbi:
In Conrad there is a bevel gear. Possibly, the so called "foundation" to be quite useful for your purposes.
Greetings,
Korbi #
Antwort von Rolf Hankel:
Only mal ne small suggestion, not the article but the pictures of my Eigenbaus
http://forum.slashcam.de/lanc-funktionen-bei-hf-s200-20-21-vt85799.html?highlight=follow+focus
Regards Rolf ...
http://www.youtube.com/user/sonnenscheinfilm#p/u
Antwort von Numquam:
have a bevel gear, the correct translation, so it is useful for the purposes of an FF.
The transmission of Conrad has a 1:1 ratio. This I've synonymous looked a long time ago and have refrained from.
I've built a gearless FF, this is done without any gear from his work and more than satisfactory.
Only the macro slider, I still have not received. They're probably gone by sea!
But a very nice setup you've developed there. It must just not a system of Chrosziel or other be for several hundred dollars.
DIY funzt synonymous very good, especially as a renowned Manufacturer's Gearbox synonymous with an electrical trade and purchased for the umpteenth time as FF resold.
Something is custo bruise in my eyes.
Better to build fürn Appel and n egg yourself and be happy.
Top FF Rolf! Thumbs up.
Antwort von Frank B.:
Well, here has done so again a lot. Thanks for all tips, suggestions and photos!
It's great that besides me are people who are concerned about how to get to specific, desired results without spending a fortune for it. It is already clear that with such a bricolage the professionals can not reach the water, but as an amateur you have indeed not always synonymous times 500 - to 1000, - ¬ left to be able to afford professional equipment. Especially in the field of accessories can an amateur always save money.
The argument of many people that someone who buys an expensive camera, synonymous Money must have accessories for appropriate, I share only with only with restrictions. I go with my cameras, I only every 5 - 10 years buying new financial s.die to pain threshold. When the camera I would not save as often happens s.der wrong place and I have to guarantee me a short time later, not angry about it, bought a better model. For me, a good quality and as much manual intervention are required. Also, I have resolved to buy a camera for more than 1 / 3 inch chips.
All in all, the camera then usually so expensive that there is not much money for accessories. As often creativity and craft skills are required. One has no video kit for 400, - ¬ Buy, padded case, a pilot from the hardware store with the material of an iso-mat from the camping supplies, do it for the amateur usually just as good. ;)
@ Numquam
Can you even explain briefly how you want to go without gear? A gearbox is still all that transmits force and movement. And what is a macro slider and what he has in FF for a job?
@ Rolf
Your FF seems to be gearless (zahnradlos), which is obviously a little easier to achieve (a compliment - it looks clean). I've like before with my belt. Your part seems to work on rubber-coated pressure wheels. Where did the parts come from?
@ Korbi
Yes, I'm synonymous with Conrad browsed already. The 1:1 ratio has disturbed me synonymous. Conrad, however, synonymous single bevel gears, because you can build other synonymous translations. I bought from model area two bevel gears, the 1:2 and - enable vice versa - depending on installation. Probably comes from a model car Tamiya TT1 and there is a differential in the original. The wheels have only cost a few euros. Since I have ordered my times, but still do not know if I'll use them eventually. Possibly. found so nochwas better.
In my FF to the rotation of the wheel through an angle drive to a pulley and out of da are transmitted via a timing belt on dan lens ring.
Antwort von Tuffy:
Hi,
I was once synonymous with the idea to build something like that, but will probably buy a DFocus times.
I wanted at that time synonymous with Conrad buy the gearbox, but was not available and I could not order to the view (I wanted the look and feel "test).
On Mercateo (think that is so) I once saw a gearbox that looked exactly like the ones you can buy individually of RedRock. Whether this is a 1:1 transmission (that is, turn right once again turn is it?) I do not know, would have to look.
The timing belt, etc with me synonymous interested s.der GH2 is certainly the heavier (Fitzelobjektive, or if you take what other changes in diameter, the kit you can not even need it)
Greetings
Antwort von Numquam:
You need about 60 ¬, NEN cordless screwdriver, a wooden wheel + rubber ring, lens cap ne, NEN angle, ne M6 screw with mother, epoxy glue, plastic washers and the macro slider. And voila, FF!
Greetz
Antwort von Frank B.:
@ Numquam
Since I will not out of it quite clever. First, the questions remain, what is a macro as you slide and then the whole zusammenbaust. A wooden wheel I did not really use - for aesthetic reasons;). With Lego gears of my guys but I have experimented synonymous times - I must confess. The rattle me, but too much (too much play).
Antwort von Numquam:
@ Numquam
Since I will not out of it quite clever. First, the questions remain, what is a macro as you slide and then the whole zusammenbaust. A wooden wheel I did not really use - for aesthetic reasons;). With Lego gears of my guys but I have experimented synonymous times - I must confess. The rattle me, but too much (too much play). Just send me a mail once s.meine address, you'll see in my profile. Then I'll send you a picture of my FF, as I said is not quite ready as a crucial component is missing.
This means you can use it already, but not for all the Lenses I own! ;-)
Greetz
Antwort von Frank B.:
Send me just a mail ... Already done.
Antwort von Numquam:
Have not got any mail of you! ;-)
Now she is there, but has taken a long time ;-)
Antwort von Rolf Hankel:
@ Rolf
Your FF seems to be gearless (zahnradlos), which is obviously a little easier to achieve (a compliment - it looks clean). I've like before with my belt. Your part seems to work on rubber-coated pressure wheels. Where did the parts come from?
Since I have a small lathe, I realized something very quickly.
The big wheel is rough on the pressure side and the intermediate gear is stuck with a neoprene strip
Let's see how your design looks like times, I hope you keep us informed
Regards Rolf ...
