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Messages - Matheus

#1
Well, today I finally got time to mess around with the FPS Override setting AND with the MLV video setting, by trying a timelapse.
It worked well (FPS Override only works in High-Jello mode, though), but strangely enough, my video started to show some weird noise bands after a few minutes of recording:

https://www.youtube.com/watch?v=7IOeJsSrWEg

And more strange yet, right after recording it, if I took a picture, the image would come out cleanly, as if nothing happened.
Any ideas?
#2
Press the DOF preview button then turn the lens like 45 degrees. It should disconnect the electronics and lock the aperture to what you set (just make sure the lens is still on camera)

Old trick, but works for STM
#3
Quote from: josepvm on April 21, 2015, 06:15:24 PM
During my test yesterday on 500D (nightly 2015 March 29th) expo override worked fine for my STM lenses, as I already posted.

But now I've tested it also on my recently purchased EOS M. And there is really a problem with STM lenses.

Lenses I have tested (EOS-M nightly 2015 April 14th)

- EF-M 18-55mm STM   Expo override does not work, exposure in FRSP does not change at all when changing aperture.
- EF-M 11-22mm STM   Same behaviour, expo override does not work
- EF-M 22mm STM  Exposure in FRSP does not change when going from F2.0 to F11, but there is some degree of exposure reduction at F16 and F22

Using the EF to EF-M adapter on EOS M I get:

- EF 50mm f1.8 and several EF-S USM lenses: expo override works Ok.
- EF-S 24mm STM:  same behaviour as EF-M 22mm STM prime, exposure only changes for F16 and F22
- EF-S 18-55mm STM and EF-S 55-250mm STM: same behaviour as EF-M zooms, expo override not working, exposure does not change at all.

Tonight I will repeat tests on 500D with a more recent nightly.







Add the 18-135mm STM to this list, I've tested it yesterday on my 70D (firmware 1.1.1B) and it wouldn't work even with Expo Override...
#4
Quote from: nikfreak on April 01, 2015, 10:34:35 PM
Yes, BSOD caught me as commented but still the pull request is no joke wether it might be declined or put on hold for weeks...

Just do as it suggests, enable peaking, take a photo of today's date on a calendar and everything should be fine. The magic button part may be a bit tricky to do, but worked fine for me...
#5
Tried on my camera yesterday. No success :(

October 2013 model...
#6
Quote from: mageye on January 19, 2014, 01:48:40 AM
The video still doesn't play in Google Chrome on Mavericks 10.9.1 >:(. I am thinking that it will probably need a Flash or Shockwave plugin update or something because I did manage to get it to play in Safari ;D (although that's not really my browser of choice).
Pretty weird, since I thought Chrome even had Flash pre-installed, but well, I've put it on YouTube, just for ease for those who can't really watch it on Flickr: http://www.youtube.com/watch?v=cnLWucqMPcY

Quote from: mageye on January 19, 2014, 01:48:40 AM
I like where it's going - the time lapse thing. It's a little hard to take it in, because I feel, the sequence is a little too short. This is what I mean about the time it takes! >:(

The bit with the thunder is good ;). I assume you had it set up somewhere close to home? I can see that it would work well if you had it set up as a more 'composed' shot ;). Also it's a shame that thunderstorms don't last longer! ;D Can't really change mother nature I suppose! :D
I have to agree on this, I'm still trying to get the hang of timelapse stuff. At first, my idea was just to let it run so I could test the program for the first time, not to make something really long (thinking better, I should have made a longer transition to night though).

The timelapse itself was made from my garage, if I really knew the size of the storm I'd gone to a better place, without houses and stuff...

Now, I can't change mother nature ;)

Quote from: mageye on January 19, 2014, 01:48:40 AM
Anyway keep at it :). I apologise for my criticism :-\. Maybe I should upload more of my stuff and I am pretty sure I would get plenty of criticism :-\. There is plenty that is not right about what I do! ;D
To be honest, I really enjoy getting *real* feedback on my works... Most of time people I show them will just say "cool" or something like that, but won't really point like "oh, this could have been a little longer" or something like that, maybe people think we are perfect people that never fail? :P
#7
*** UPDATE

Just added a download link along with instructions of how to use it.
It's pretty stable and should work perfectly, just don't forget to set into bulb exposure mode if you intend to use bulb ramping! :)
#8
Quote from: mageye on January 15, 2014, 02:49:31 AM
I appreciate that you share your program with us all. It looks interesting and I love everything to do with time-lapse (apart from the time it takes >:().

The link you put up there is a FLCKR link to a photo that doesn't seem to display :-\. I haven't looked through all the photos there but I like the lightning one :).

I am assuming that you meant to link us to a video that (at least) I would like to see!

So where's the video? :o ;) :D

Well, the link IS actually to the video itself (and it displayed fine here)... Have you tried refreshing the page or opening through my user's photos page? :)

But well, I'm working on refining it (and taking off the bugs from it), before I release some sort of application.. :)
#9
Hey guys from ML community!
Just felt like sharing my small "weekend project" with you guys... :)

In a nutshell, I've made a pretty simple program in C# to act as a intervalometer and bulb shooting program. Until now, the only difference is that it's capable also of ramping the exposure time (I think it's almost like ML does it too, but I looked for something I could do on stock firmware) and you can change the settings on-the-fly, in case you feel like you need to.

It's in a very raw form right now and it's a way too buggy for production use, but should improve over time (I also plan to share the binaries when it's in a good working state).

Here's a not-so-amazing video that I made this afternoon by using it: http://www.flickr.com/photos/matpratta/11955727684/ - Starting at the last 14 seconds (after a bright flash frame) you should be able to see it's exposure ramping working, ramping a exposure from 1/2s to 4s and then 7s during about 30 minutes (on a 10 second interval)...

Here's a screenshot of it working (and during the exposure ramp):



These two progress bars indicate the current exposure progress and the time until next exposure. The program also enforces a minimum 2 second interval between each exposure end/start to prevent errors.

Edit: The "MLU" button is just for when you have mirror lockup enabled on camera, so the program will activate it before each shot (this seems also to enable shooting bulb with faster speeds, like 1/60 and below).

What do you guys think? :D

** EDIT (2014-01-18):
After some work on it, I've managed to get it to a stable point and decided to release a version for people who want to test it. Currently, I've only tested it on Canon EOS 70D, but should work fine on all other Canon EOS cameras supported by Canon's EDSDK.

Here's the download link (v0.1): https://docs.google.com/file/d/0B89CpY3irum7aU1yTVlqM3QzQnc/edit?pli=1 * Requires .NET 2.0

Instructions:

The process should be very simple, just plug your camera on the USB port and open the program. Also, set your camera to the Bulb exposure mode (B).
When inside the program, you will have three main areas: Exposure, Intervalometer and Bulb Ramping.

Exposure
- "Single (in-camera settings)" will take a photo with the current settings (in case you are not in bulb).
- "Timed Bulb" will take a photo with the interval chosen on the "Bulb Seconds" field. I found out that while using bulb, you will need to enable Mirror Lockup if you want to have exposure times below around 1/30.
- "MLU" is only needed if you have Mirror Lockup enabled on-camera, so it can flip the mirror up before starting an exposure.
- "Review" will show you a full-size copy if the image after it has been taken.

Intervalometer
- "Method" is where you can select if you are using bulb mode (Timed Bulb) or any of other modes (Camera Settings).
- "Interval" is pretty obvious, the interval between each photo. Currently the lower limit is the bulb exposure time plus two seconds.

Bulb Ramping
- "Start" is where you set when you want the exposures to start ramping
- "End" is where you set when you want the exposures to start ramping
- "Smth" is where you can select some sort of "smoothing" of the exposure ramp, where 0 is linear and 100 is an S-curve.
- "End(t)" is where you can set how many seconds you want the exposure to be at end of ramping. It can be both more or less than the initial exposure time.

Note: you can change most settings after you started the intervalometer. Just remember that while bulb ramping, the "Bulb Settings" field under Exposure will change before every new shot.

Debug:

The debug panel is mostly intended for testing, and should not have many interesting things for users. There you have options like the about screen, reset camera, properties checker and also access to a small filesystem tab, where you can view the files inside the camera (and open them, by double-clicking). Again, this panel is intended just for testing.
#10
General Chat / Re: ETTR: Am I doing it wrong?
December 27, 2013, 06:50:58 PM
Quote from: dmilligan on December 27, 2013, 03:30:16 AM
Sounds like you ETTR'ed to far and clipped your highlights. Zebras are very helpful to prevent this. IMO zebras are actually more useful than the histogram when ETTRing. You can see what areas are getting clipped and move your exposure down just below the point that they don't clip, also you can easily ignore specular highlights. Some things you don't care if they clip (like bright lights or the sun), some things you do. Zebras show exactly what is clipping so you can clip the things that don't matter and not clip the things that do. Hard to do that with just a histogram. You can use raw zebras in both image review and LV.

Yeah, I'd love to have zebras for looking better at the exposure, but since they are only on ML and there's no working version of it for the 70D, then I had to mess only with the histogram...
Maybe I've just misunderstood what RAW/ETTL can and can't do and went too far on it.. I was trying to fix a xmas tree full of white lights, I knew it could become too overexposed, but thought it would only about +1EV then what I was exposing for, something recoverable..

Anyways, thanks for your help, dmilligan!
#11
General Chat / ETTR: Am I doing it wrong?
December 26, 2013, 10:08:50 PM
Hello guys from ML community, a few days ago I was shooting RAW on my 70D and decided to experiment with ETTL, to see if I could improve my noise performance on shadow parts of the image.

On my first attempts it worked amazingly, and I could get some very nice shadow detail in a high-contrast night scene I was shooting, but on my later attempts I've noticed that highlights were looking washed (instead of having detail, being just gray) even after about -1.0EV exposure compensation on ACR... So I guess I must be doing something wrong (either when selecting exposure, or during conversion) but I can't find out where, after all, I thought DSLR cameras had atleast some extra dynamic range, specially on highlights...
#12
Feature Requests / Re: [IMPOSSIBLE] dual ISO H.264
November 28, 2013, 08:07:57 PM
Quote from: a1ex on November 28, 2013, 11:56:06 AM
Here's a real-world test image (100/1600, exposed with ETTR):


If you are able to recover it, I'll give up on engineering and start growing mushrooms instead.

Hopefully this completes the proof for all the non-believers.

Well, I tried to... Maybe at some point someone manages to get a better quality...
https://drive.google.com/file/d/0B89CpY3irum7ZVEzZGlPQTFPeTg/edit?usp=sharing

Just as a suggestion, couldn't this interlacing be done like the ML HDR thing? We alternate which lines use high/low ISO every frame, and then compose on post?
#13
Feature Requests / Re: slower shutter speed in video mode
November 11, 2013, 05:13:09 PM
I know this may sound stupid, but what if we get the exposure and add it to the previous frame?

For example, we capture all frames in 1/30, in a "capture" buffer: [F1, F2, F3, F4, ...] and then, we add each of these frames exposures with the previous frames, into the buffer going to the card (output): [O1 = F1, O2 = F1 + F2, O3 = F2 + F3, O4 = F3 + F4, ...]

This way, we could lower down the shutter to a "virtual" 1/15, for example...

I'm not a ML developer, but this is my idea for what could be done (while keeping at 30fps)...
#14
Share Your Videos / Re: Canon Eos M RAW Video
September 19, 2013, 10:42:17 PM
Great!!!
#15
Raw Video / Re: Anyone try Raw with the 70D Yet??
September 18, 2013, 12:57:01 AM
Quote from: Sc0Bee on September 17, 2013, 04:26:20 AM
???
I'm certainly no expert, but something about that video doesn't look quite right.

Rather than an example of RAW on 70D using ML, it seems to be an advert for a grading product called CineVision RAW.  If you go to the CineVision website, the product is available for...wait...wait for it...10 bucks.  Or 20 bucks.  It's kinda hard to tell.   :o

I call BS, but I'd be glad to eat my words if the producer of the vid shows up and contributes his code.

Let me correct myself, before anyone else do like myself and interpret it wrong: it seems that by "RAW" the poster meant "flat"... Probably the same thing everybody already did before of setting the camera on a flat profile, for posterior color grading....
Sorry for any misinterpretion I may have caused...
#16
Raw Video / Re: Anyone try Raw with the 70D Yet??
September 17, 2013, 01:06:47 AM
Well, I don't know if this helps, but this guy seems to have managed to get ML doing RAW on his 70D...

[link removed]

Maybe he could make some contribution to the community?
#17
User Introduction / Re: Hello from Brazil
August 28, 2013, 11:55:56 PM
Quote from: arrinkiiii on August 28, 2013, 09:59:29 PM
Bemvindo Matheus

Talvez possas já começar a desenvolver o ML para a 70D. Tens uma?

Abraço
Tiago

Obrigado Tiago!
Estou no aguardo de alguma loja na minha região (interior de SP) começar a vender a 70D. Espero poder fazer alguma contribuição no desenvolvimento do ML, mas por enquanto vou apenas acompanhar o desenvolvimento...
#18
Olá amigos, sou Matheus e sou do interior de SP.

Sempre tive grande interesse no ML, mas até hoje não tive a oportunidade de usá-lo (planejo usar assim que estiver disponível para a 70D).
Espero poder aprender e também compartilhar meus conhecimentos com a comunidade.

Att,
- Matheus
#19
User Introduction / Hello from Brazil
August 28, 2013, 09:48:13 PM
Hello everybody, my name is Matheus and I'm from Brazil.

I'm a fan of ML and have been looking at it for some months (really excited to try it when it becomes available for the 70D).

I have some knowledge in programming with C# and PHP (mostly because of a hobby in creating programs :P), other than this, I'm a user of Adobe software (Premiere, Photoshop, Lightroom, AE, etc) and of some open-source software (like GIMP).
Like most people on this forum, I have some knowledge in photo/video...

Well, I hope to learn with and also contribute with the ML community in the future.

Thanks everybody!