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Messages - Kharak

#51
Scripting Corner / Re: MUlti Shot Image Capture script
January 11, 2021, 09:16:27 PM
QuoteFocus jiggling is a non proven way to do super resolution and based on the 'assumption' that moving the lens focus between images may (sic) create small image to image movements at the sensor pixel level, eg a few microns. As I say, this remains unproven. However, if you can't carry out 'normal', handheld super resolution bracketing, eg because of shutter speed, then focus jiggling may introduction enough image to image jitter to allow you to carry your super resolution processing. If it doesn't, at least you will be able to reduce the noise in your image, ie by sq.root(n); where n is the number of images taken

I think this sounds very interesting, but I am not getting my head around this "jiggling", to me, it's a guy gently kicking his tripod. Not sure if I am understanding this right, but do you shake the camera a little? As in artificially creating a Pixel-Shift image?

Can you link me to some article explaining this practice?
#52
Academic Corner / Re: Magic Lantern usage in academia
January 08, 2021, 02:12:24 PM
Also military, spoke to a Recon and he used a 5D3 with ML for his reconnaissance work.
#53
General Chat / Re: Raspberry Pi High Quality Camera
January 08, 2021, 02:10:32 PM
Thanks for clarifying.

I borrowed a Pi once from a friend, but it was only for watching films on the TV.
#54
General Chat / Re: Raspberry Pi High Quality Camera
January 07, 2021, 02:01:51 PM
Can someone correct me if I am wrong, but is this not the exact same concept as Axiom Camera? Open Source, all schematics on the table, if you got the skill you change any part you see fit? Or is there a fundamental difference, if so, what is it?

I must admit I personally only know rasperry pi as a TV computer.
#55
Can AVI contain the metadata for HDR/HLG?

I am surprised there is no support for prores on the Ipad, then again its a tablet, but I thought they unified the entire IOS, from phone to laptop?

Do you have a computer that you can test if the Prores or DNxHR work with the metadata?
#56
General Chat / Re: Applying for fiscal hosting
December 16, 2020, 11:12:42 AM
Congrats guys! You earned it a thousand times over!
#57
It depends on your shooting style, I personally don't like to hold the camera out in front of me, it creates too many shakes and with all the added gear it quickly becomes a heavy brick that shakes when I get tired.

If not shoulder mounted ofcourse, I usually keep the right hand on Top handle and left hand on focus wheel/lens barrel and shoot from the hip or chest. But the caveat is after a long day of staring down in to the monitor, the neck is gonna hurt.

You already have a side handle, I don't know about this wooden one, maybe it is better, but it looks like your rig will pull down on the left because of the center of gravity being placed where the camera sits, this will most likely cause more shakes for you as you battle the gravity pulling down to your left.
#58
General Development / Re: Cooled R5
November 28, 2020, 12:46:45 PM
Thanks for sharing, that was a joy to watch!

I'm keeping my eyes out on Ebay for a $10,000 Modified R5 now.
#59
Quote from: Walter Schulz on November 27, 2020, 09:31:37 PM
What about a process avoiding this: A new member will get a notification about mandatory user introduction (we have such a forum here). Notification includes a section about waiting for that post to become visible before posting in other areas.

Done, both problems adressed.

You write "Done", so is it done? or do you mean as in then it would be no problem?

A mandatory user introduction sounds like a no brainer, if so many posts are getting lost in threads.

And if the users can't figure it out, then they probably shouldn't be messing with ML anyways.

So here is to all the users forgotten in EOS M thread with a bricked camera and no Forum profile  ;)
#60
General Chat / Re: An era ends: PhotoKina is no more ...
November 28, 2020, 12:38:02 PM
Someone had to go sooner or later with so many conventions and so many moving to way cheaper online shows or presentations. Even more so now with corona.

I think it was last year that Canon decided not to attend Photokina, because Canon had attended another convention like a month before where they announced some new products, so attending Photokina a month later with nothing new was not in their interest.

Its a damn shame though. I much prefer the real thing than all this virtual bs. But pros will always prefer the physical thing, a pro wants to touch the product and feel it, releasing a spec sheet just isn't the same.
#61
General Chat / Re: Applying for fiscal hosting
November 28, 2020, 12:21:16 PM
Awesome, really hope it comes through!

And thanks for sharing.
#62
I use 8sinn cage with the (i think its called) scorpion top handle, got 4 hot shoe mounts in the handle plus screw mounts all over. With rails under the cage, i still have not managed to get a perfect balance. But with monitor placed on the back hotshoe on the handle, hip shooting is a breeze and very stable, but going one handed low is a tad too shaky for me.

I am currently looking for the classic Juicedlink RM333 (anyone know someone?), to be placed on the back end of the rails for a uniform front/back balance. Because adding a shotgun at the moment throws of the balance and having a zoom recorder under or on the side is just not working. (Plus they have the worst battery life and syncing is crap).
I am trying to increase the cameras "momentum" not sure if that is the right word, but the bigger the rig, the smaller the shakes, but too big and it becomes cumbersome, so its really about finding a balance between how heavy and balanced I want it.

I would just becareful about making your rig too wide, rather I would lenghten the rig for better movement.
#63
I am unable to log in when using duckduckgo browser on ios, I get this message:

"Your session timed out while posting. Please go back and try again."

It works with Safari. I suppose it has something to do with duckduckgo's privacy settings or no cookie policy. it used to work no problem. Could also be a bug on duckduckgo's behalf.
#64
Raw Video Postprocessing / Re: DaVinci Resolve and ML Raw
November 10, 2020, 05:08:08 PM
Exciting, i love Resolve, but it is sad to see the blatant rip offs from small Plugin and software developers.
#65
Btw, i believe MPV also requires a GPU to run properly.

Does it play other codecs? Like dnxhd, h264 and prores?
#66
Quote from: timbytheriver on October 25, 2020, 02:17:40 PM
Thanks @Danne @Kharak

Have installed MPV player. CF file rendered from MLVApp crashes it. The only app playing the file correctly is Resolve so far.

Can you render DNG - Cineform from Resolve and play it with MPV, just to make sure there is no OS issues causing this.

edit: https://www.softpedia.com/get/Multimedia/Video/Encoders-Converter-DIVX-Related/GoPro-CineForm-Decoder.shtml (win only) I have this, but I never felt this helped me. It did not seem like any difference having the decoder running or not running, my computer played the CF files no matter in MPV.

re-edit: The last ~20 posts should have its own thread. Will be hard looking this up via Vegas Pro thread in the future.
#67
sorry, I thought Cineform export was incorporated in Mlv app 1.11.

I never use ffmpeg, can you give me a ffmpeg command line for exporting cineform from MLV(if possible)?
#68
Quote from: timbytheriver on October 25, 2020, 01:46:06 PM
@Kharak Thanks. Which build should I use? (on Mac) https://mpv.io/installation/

I am on Windows, so i cant recommend a version for you, sorry. But I think they are all more or less the same at the core, some versions might have scripts or plugins enabled. But the player should play anything you throw at it and without the dreaded gammashifts from QT and VLC.
#69
Yes, i can. With mlv app 1.11?

@timby try MPV player.
#70
I have never rendered cineform to a lower res than HD. But i have rendered to every weird ratio and resolution above HD and it always played nicely (except the 8k ones).

Cineform should be resolution agnostic unlike DNxHD, but apparently it has quirks with < HD res.

As you know, Resolve gets its power from the Gpu and all the Decoding is done by the GPU.

How does a dng sequence play for you in resolve?
#71
Cineform always plays smooth for me in Resolve. be it 12 bit, 10 bit, highest or lowest. Btw Quality set at 'Highest' is total overkill or 'Film Scan 2' as it was originally called, GoPro themselves called Film Scan 2 total overkill. High being Quality: Film Scan 1. You really need to pixel peep the darkest pixels to see any difference between the two, Film Scan 2 being much higher bitrate than Film Scan 1. You notice more difference between High and Medium and so on, but High and Highest are basically indentical.

You should check your GPU settings under Preferences, not sure what you are running on, but Resolve might be set to OpenCL when it should be Cuda/Metal or vice versa?

Regarding Exposure change between 10 and 12 bit, I have not seen this personally. Are you converting MLV to Cineform in MLV App ?

If you render from Resolve, in the delivery page you can set Colorspace and Gamma tags for the rendered files which can be your best friend. I presume there is some sort of gamma shift. Try setting CS and Gamma to sRGB or Rec709, depending what you are watching on.
#72
General Help Q&A / Re: T4i playback issue
October 24, 2020, 09:04:54 PM
Light button does bring Overlays over images, but no RAW information. Only information from the generated JPEG. Still good for quick checking focus with the Focus Peaking.

Thanks a lot, I can't believe I didn't know this all this time.
#73
General Help Q&A / Re: T4i playback issue
October 24, 2020, 05:29:19 PM
Quote from: a1ex on October 24, 2020, 04:45:33 PM
This feature is triggered by a model-specific button (5D2: PicStyle, 5D3: Light, 100D: Menu etc - see the Help tab). The 650D/700D don't seem to have this feature enabled at all.

Light button  :o I gotta test this ASAP! I'll let you know.
#74
General Help Q&A / Re: T4i playback issue
October 24, 2020, 02:37:28 PM
I think ML overlay has mistakenly been "removed" from 'Play' a long time ago and was never fixed. I too thought I used to be able to use ML overlays when watching pictures taken on my 5d2 back in the day, but two 5d3's since and I dont think it ever worked for me on those.

There are not many new builds being released anymore or developers working on older models, you could check Danne's bleeding edge builds, not sure if he has one for 650D thiugh.

Do you know if Raw Zebras also worked when reviewing pictures or only the spot meter? Also was it the RAW spotmeter?
#75
Pulsing lights, exposure change when blocking/revealing light... sounds exactly like the issue with ACR flickering. because ACR processes one frame at a time and performs background adjustments to each frame depending on the light/exposure in the scene, you get flicker.

Only way to avoid it is by sticking to .DCP's and only adjusting exposure and WB parameters (which are not affecting the flicker).

Not saying you are using ACR, but a1ex already confirmed cr2hdr works on a frame by frame basis, so most likely the culprit regarding the flicker.