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CINETAPE | Want an Affordable Option?

AC 1st AC focus pull focus cinetape

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#1 Davi Silveira

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Posted 14 October 2016 - 11:45 AM

Cinetape is one of those tools that is very helpful for focus pullers, but it's very expensive. Would anyone be interested in an affordable Cinetape solution? I'm curious to know because I'm developing one that measures FT-in or M-cm, will be using a 5v rechargeable battery, LCD Display, and mounting options. Future upgrades would integrate with your phone via App, Bluetooth, and VR headset. The idea is to also make it as accurate as possible, we all know ultrasonic sensors have their issues but for those who use Cinetape and know of its value I'm curious to know if you'd be interested in a more affordable option that doesn't compromise quality and accuracy?

 

Let me know in the comments below, thanks.


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#2 Adrian Sierkowski

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Posted 14 October 2016 - 04:53 PM

I think anyone who can bring a product to market for a lower price without sacrificing quality and accuracy will do very well. I certainly wouldn't mind seeing some kind of cheaper solution


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#3 Davi Silveira

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Posted 14 October 2016 - 05:11 PM

I think anyone who can bring a product to market for a lower price without sacrificing quality and accuracy will do very well. I certainly wouldn't mind seeing some kind of cheaper solution

 

Adrian,

 

Thanks for the response. That's good to know, gives me some comfort as I pursue forward. 


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#4 Phil Rhodes

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Posted 14 October 2016 - 05:40 PM

Just beware, lots of people will say it's a good idea, then not buy one when you've spent months writing code.

 

P


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#5 Miguel Angel

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Posted 14 October 2016 - 06:26 PM

I think that it is a good idea to bring new products to the market.

There is one thing that your product should do and is to show the distance in the Preston / Scorpio / WRC screen as the Cinetape does.

Might be a very silly thing to ask for but there are plenty of times where a focus puller doesn't have access to the Cinetape screen and you don't want to rely on your phone to see the distance because that's something that you have to hold too.. while holding the wireless follow focus and pulling focus!

Have a good day!
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#6 Davi Silveira

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Posted 15 October 2016 - 05:59 PM

I think that it is a good idea to bring new products to the market.

There is one thing that your product should do and is to show the distance in the Preston / Scorpio / WRC screen as the Cinetape does.

Might be a very silly thing to ask for but there are plenty of times where a focus puller doesn't have access to the Cinetape screen and you don't want to rely on your phone to see the distance because that's something that you have to hold too.. while holding the wireless follow focus and pulling focus!

Have a good day!


Thanks, I'll definitely take your comments into suggestions as we develop this product. Lots of new ideas and thoughts.
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#7 Davi Silveira

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Posted 15 October 2016 - 10:13 PM

Just beware, lots of people will say it's a good idea, then not buy one when you've spent months writing code.

 

P

I know what you mean! Can't really trust anything till your chickens hatch. :)


Edited by Davi Silveira, 15 October 2016 - 10:14 PM.

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#8 Gregory Irwin

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Posted 19 October 2016 - 05:00 PM

I've always found the discount options not able to compete with the more expensive professional equipment.  There's a reason for the gear that has the price tag.  This also reflects poorly on the AC who brings in the 2nd choice items when compared to the AC who has the Preston, Cinetape or Light Ranger.  Sad to say that there is judgement.  

 

G


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#9 Moe Hissi

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Posted 27 October 2016 - 05:54 AM

i researched all over for a long time, Cinetape seems to be the perfect system. But i cannot afford it anytime soon. i have my laser distance meter, it has a live mode that helps but of course the laser is visible on camera so i never use it. it would be great to see a new compact and simple yet affordable system.


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#10 David Steel

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Posted 29 December 2016 - 05:55 AM

Just thought id let you know there is a much cheaper option. It is the redrock micro tape. It is selling for $795usd on bhphoto

https://shop.redrock...ar-rangefinder/

I own a cinetape and it is flawless and always reliable. Tho it was not cheap.

I have worked with the redrock microtape before and it is not as good as a cinetape. But it does the same job, and for the price difference it is worth buying if you cant afford to spend $10,000.

The main issues i found with the microremote was that:
the sonar spread was a bit to wide so you would often get unwanted readings from objects you did not want. Even after panning the microremote away from the unwanted objects.

Also the readout screen can be hard to see in day light (reflections) and also you cant move it as it is based on the microtape it self

But for this being less than a 1/10th of the price you cant go wrong and 90% it will help you out. So just have it in your kit bag for the times you need it.
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#11 Jack OGara

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Posted 29 December 2016 - 08:42 AM

 

 

Are you still working on this? Have actually been working on something like this too for shits and giggles but would actually like to make it.

How far have you gotten with yours?

 

Mine is basically just reading out the distance atm but might put some time towards it this new year and get it to do a bit more.

That and I am looking to replace the cheap sonar with a decent one, this was just a concept piece I put together.

 

IMG_20160507_103558340.jpg


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#12 Phil Rhodes

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Posted 29 December 2016 - 10:19 AM

Arduino forever!

 

I'm fiddling about with LTC code on those.

 

You know there's reasonably inexpensive time-of-flight optical measuring devices, now?


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#13 Jack OGara

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Posted 29 December 2016 - 10:37 AM

Arduino forever!

 

I'm fiddling about with LTC code on those.

 

You know there's reasonably inexpensive time-of-flight optical measuring devices, now?

 

Wanted to look into LTC too for a clapper board project.

Got stuck on this project though and never really advanced from this prototype :/

 

Are the optical ones able to go far though? If I remember correctly they are mostly in the mm range of measuring.

TBH I never really looked at them though so I wouldn't know :P 


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#14 Phil Rhodes

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Posted 29 December 2016 - 11:10 AM

One of those Garmin LIDAR modules would be suitable I suspect. $149 US from Sparkfun, 40m range, +/- 25mm at >1000mm. Not pocket money, but not horrendous. Quite a bit of laser power, I'm not sure what the safety concerns are.

 

Decoding LTC is trivial. Generating it is also trivial, but the crystals on most AVR dev boards will not be adequately stable (and some aspects of the Arduino library, such as the timer interrupt that updates millis(), will need to be switched off). Personally I tend to treat Arduinos as AVR dev boards and disable all that stuff. It's relatively easy to replace the crystal with a temperature-compensated module, though be careful about setting the micro's clock source before you make the change. Jam sync is a bit of a pain and requires some lateral thinking and clever use of large integer variables in order to avoid having time-consuming floating point division screwing up your timing. My favourite solution would be to use one of those little Nordic RF radio modems, but that's subject to interference so you'd probably want it to be able to freewheel on loss of signal anyway - which is essentially the same problem as jam sync.

 

Boy, these things get complicated fast.

 

P


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#15 Jack OGara

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Posted 29 December 2016 - 11:20 AM

Hmmm lasers are cool but idk about people being in front of it :P

I do like that it is 40m with good accuracy though...

 

Ill leave you with that LTC stuff, way over my hobby level programming xD


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#16 Jack OGara

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Posted 01 January 2017 - 09:43 PM

Finally finished the code on this. Well the prototype anyway.

 

Waiting on a couple new sonars to come that are 20ft and 30ft sensitivity. 

Have the option to have a wider beam at 20' compared to the 30'. The 30' being near to a laser in terms of target xD

 

Going to work on a housing tonight and find someone with a 3D printer that I can steal xD

 

Made a little video showing off what I got. Sorry for the clicking, trying to talk without waking people up...#HEAVYBREATHING


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#17 Jack OGara

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Posted 06 January 2017 - 09:10 PM

New high precision sensor came today. 

Managed to get mixed up and only get the 21ft sensor and not the 35ft one. But they are technically the same other than distance they are able to measure and sensitivity to things width ways.

 

Works really well as a sensor though. Great results so far. This is basically all the electronics done, though there will be 2 displays. Pic bellow only shows one hocked up.

Will also add a wireless board in there too when I get some so I can create a remote display to go along with my wireless follow focus kit.

 

IMG_20170107_014036169.jpg

 

 

 

Also worked on a prototype housing. Made it just to hold the components atm but will add some style to it once I know everything fits.

Ordered a 3D printer, should be here Monday, maybe have this printed Wednesday...

 

 

Render_CAD_Case2a_withcomp_070117.jpg
 
Render_CAD_Case2a_withcomp_070117_b.jpg
 
 
Hole in bottom is for 1/4-20 thread, so perfect for a magic arm to mount it on the camera.
The other 4 are to keep the case together.
 
 
Software wise, got the basics down. It measures and displays it on the two displays.
Want to add 3 buttons to the design that will allow you to access a menu to set; datum line offset, display brightness, measuring units (would like metric as well as inches so need this), wireless channel and anything else I can think of adding.
Before I do that, building this prototype and going to use it a bit to check it it works well in the field. It should do...

Edited by Jack OGara, 06 January 2017 - 09:15 PM.

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#18 Phil Rhodes

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Posted 07 January 2017 - 06:26 AM

Great, now charge £5k for it.

 

And soon:

 

27c5fc84.jpg

 

And, edit: you know if you get several of those sensors, you can create a phased array and get better directional resolution.

 

Watch out for sidelobes.

 

P


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#19 Jack OGara

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Posted 07 January 2017 - 11:54 AM

Great, now charge £5k for it.

 

And soon:

 

 

 

And, edit: you know if you get several of those sensors, you can create a phased array and get better directional resolution.

 

Watch out for sidelobes.

 

P

 

LOL

 

Phased array might be a tad much for a cine tape clone, just saying :P


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#20 Jack OGara

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Posted 12 January 2017 - 05:23 PM

Case prototype #2.

Few improvements yet to make. But getting there. Really nice feeling actually printing out something you have been working on for a few weeks and to have it physically in your hands is awesome.

 

Obviously we will be printing in black eventually, transparent blue for now to make it easier to see inside the structure of the design.

And carbon black at that. Not just regular black... :P

 

 

IMG_0113.jpg

IMG_0118.jpg


Edited by Jack OGara, 12 January 2017 - 05:27 PM.

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