Movie autofocus experiments

Started by miyake, July 17, 2012, 03:53:50 AM

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Malcolm Debono

That test already looks pretty good. Good luck!
Wedding & event cinematographer
C100 & 6D shooter
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miyake

Anyway, It's really hard to shoot live-view from another camera.
My arm had a limit to hold those two cameras.

Please tell me how to shoot live view from another camera with valiangle(lol

a1ex

Maybe it's a good idea to just record a movie.

If you want the overlays, it is technically possible to burn them into the movie frame, though it's very hard to do so without flicker.

miyake

If we can record overlays. we can easy to debug .Because  the value is too fast to showing.
Slomo will help to understand , relation of the debug value and real live view display such as focus, expo, and so on.
One more thing, If the problem is not reproduce our side, but we can see real problems from recorded files.

Alia5

Wow thats awesome!
Very great work!

For the two Cameras: Use a piece of metal and connect it to both Tripod-mounts ;)

miyake

@Alice,

Screw is mm. not inch in my country. But the camera is inch....
So it's hard to find 1/4 inch screw and nat....

orz.. OTZ...

3pointedit

To shoot screen I bought a 7" magic arm and attached it to the flash bracket.  Then screwed in a my small camera to shoot the screen.
550D on ML-roids

miyake

OHhhhhhh! great idea. I already have it. But i didn't think it.
Thankyou!

nanomad

You can also attach the camera to a HDMI TV and use that as long as you shoot indoor  ;)
EOS 1100D | EOS 650 (No, I didn't forget the D) | Ye Olde Canon EF Lenses ('87): 50 f/1.8 - 28 f/2.8 - 70-210 f/4 | EF-S 18-55 f/3.5-5.6 | Metz 36 AF-5

miyake

Oh NO....
My sony NEX3 is need 45cm(18inch).
my magic arm is only 6inch...  orz...

@nanomaid
I'm thinking it. But HDMI cable is a little bit expensive. It's only for showing status of this debugging.


3pointedit

 :P Oh too bad, doesnt the camera do macro?
550D on ML-roids

Alia5

Quote from: miyake on July 25, 2012, 01:30:52 PM

@nanomaid
I'm thinking it. But HDMI cable is a little bit expensive. It's only for showing status of this debugging.

but you could also use the cinch cable (yellow red white) included with the 600D ;)

miyake

Quote from: 3pointedit on July 25, 2012, 01:32:42 PM
:P Oh too bad, doesnt the camera do macro?

I have only standard lens.  But Alia5 is good information to me!!

@Alia5
Thanks !!!!  I just forget the analog cable!
First, I need to find 600D paper box.

Oh,,, But how can I record SD video?(lol


It's like mebius.

miyake

It's just a time to buy Atomos Ninja ?


I need to pay the money for buying HDMI cable.
I think it's best for  me....

Alia5

Quote from: miyake on July 25, 2012, 04:27:50 PM
I have only standard lens.  But Alia5 is good information to me!!

@Alia5
Thanks !!!!  I just forget the analog cable!
First, I need to find 600D paper box.

Oh,,, But how can I record SD video?(lol


It's like mebius.


you could either set your second camera in front of your tv >.<
Or if you have a TV-Tuner in your pc with compisite video input (like me) you can record that^^

1%

TV capture card as said above with the SD/Headphone cable. 

HDMI cable to tv and 2nd camera pointed at TV. I think hdmi capture is $$$.

miyake

experiment movie

walk with current movie af


noisy!!!!!(lol
and current movie AF can't identify focus peek of infinity focus.

Alia5

i just compiled from your source and played a bit...

wichever values i choose, focusing never stops when it should in continous mode

also we could maybe tell the camera in wich direction to focus. so we could press a button to focus in or out when not in continous mode

sadly i dont have much time now to look at the code :(

listenpreis

Hehe, nice! Looks like Skynet's Terminator T1 (alpha)  8)

funkysound

Quote from: miyake on July 17, 2012, 06:33:15 PM
I need a lot of time for writing English(lol .
I got 2 reply during writing this document. First, I replay to Alex.

Miyake - your english seems to be much better than mine (hamburg germany) - anyway, I very much respect your work on the 600d audio and that´s what matters most - thanks!  :) :D
EOS 600d, Tamron 17-50mm 2,8 with stab., Tamron 70-300mm, Canon 50mm 1:1,8, Sigma 10-20mm 4-5,6, Sigma 30mm 1,4,  EOS M with 18-55mm, 22mm and EF adapter, tons of more glases incl. FD/FL, EOS 70D, Canon 18-135mm STM

miyake

@Alice5
Let's hack together!!

@listenpreis
T1 is 1984
T2 is 1994
So our MovieAF 2 will out at 2022. Yea! :D

@funkysound
C is more easy for me.  ;D

Alia5

Quote from: miyake on August 01, 2012, 05:49:02 PM
@Alice5
Let's hack together!!

If i had time to do so -.-
Also my coding is miserable

Oh and it's Alia5 not Alice5, but never mind ;)

miyake

@Alia5
We never use alphabet in Japanese life. sorry for it.
Anyway, You do not find free time. You should make a time. ;)  :D :D :D

Alia5

never mind ;)

you're probably right ;).
but lets get back to topic here

vBlack