650D ISO Noise Sample + RAW TEST

[Edgar Matos]

I have been using the raw recording function with my T3i and 5D3 since the beginning of this odyssey. But this time I got stuck with a T4i. I forgot how awful the noise is. I wanted to shot raw for my next short film but the FREAKING-PINK-DOTS... Has anybody found a way to eliminate them on a mac with out using java? I frankly can't make it work.     

[Mehmet Kozal]

Enable chroma smooth [2*2] on whatever software you using to extract dngs.

[Edgar Matos]

I have never seen such option but I have read so much about it. Still, What batch, or converter, or WHATEVER would allow me to use such option on mac?

Looking for detailed information for hours is exasperating on a forum. You need to go to deep into the devil's cheeks. And yet I find nothing again.

[Edgar Matos]

Talking about the devil, I just found Mystic on google, I'll give it a try as it has CS 2x2 option for MLV

[dmilligan]

MLVFS has options for chroma smoothing

[Mehmet Kozal]

I'm currently using MLVFS. That thing is the future. However, sometimes it goes weird whenever there is an underexposed shot. In that case I also switch to Mystic. Both supports chroma smoothing.

Please share your work on this forum since there are not many 650D videos. Happy editing

[dmilligan]

However, sometimes it goes weird whenever there is an underexposed shot.

Care to submit a bug report and/or example files that show the issue?

[Mehmet Kozal]

Care to submit a bug report and/or example files that show the issue?

Sure. I am only having these starry dots on underexposed areas when I use MLVFS. Footage looks fine when I use Mystic.
Workflow doesn't matter in this case I get the same results. Doesn't matter if I enable any options on browser based GUI.
MLV > MLVFS > Davinci Resolve 10 | 11

I will try to answer if you have any questions as much as I can.

[dmilligan]

can you share an original DNG from Mystic and one from MLVFS and/or a short MLV file exhibiting the problem?

[Mehmet Kozal]

can you share an original DNG from Mystic and one from MLVFS and/or a short MLV file exhibiting the problem?

Link includes two folders for each software. https://www.dropbox.com/sh/l197yzmtjfgyc1o/AACRXhfIaJ2lvy9NYm9hcf2ta?dl=0

[dmilligan]

looks like artifacts from one of the processing options (perhaps chroma smoothing), what options did you have enabled?

[Mehmet Kozal]

looks like artifacts from one of the processing options (perhaps chroma smoothing), what options did you have enabled?

You are exactly right dmilligan. That's my bad that I said on my previous post that I get the same results no matter what. Sorry for wasting your time.

I just tried to turn off chroma smoothing and problem didn't occur.

[a1ex]

I remember fixing this back then in raw2dng. Can you upload a unprocessed DNG?

[Mehmet Kozal]

I remember fixing this back then in raw2dng. Can you upload a unprocessed DNG?

Hi a1ex. The DNG frames from both Mystic and MLVFS are still in this link https://www.dropbox.com/sh/l197yzmtjfgyc1o/AACRXhfIaJ2lvy9NYm9hcf2ta?dl=0
There is no processing been made on them.
Please let me know if I need to do something else.

[a1ex]

Chroma smoothing is a postprocessing operation. I'm looking for a DNG without it applied.

[Mehmet Kozal]

Chroma smoothing is a postprocessing operation. I'm looking for a DNG without it applied.

Silly me Sorry for that. I updated the link with the new unprocessed file. https://www.dropbox.com/sh/l197yzmtjfgyc1o/AACRXhfIaJ2lvy9NYm9hcf2ta?dl=0

[Edgar Matos]

I see MLVFS is very popular, sadly I'm unable to install it. So I used MYSTIC as RAWTherapee never worked for me (I don't like to work with it anyway). So Once again, it feels like the begging when the pink frames were haunting the low end cameras. I don't find it usable at all. I tried the 650D last year for RAw application but I'm no seeing the light for this one. 

[Mehmet Kozal]

I don't find it usable at all. I tried the 650D last year for RAw application but I'm no seeing the light for this one.

Hi Edgar. I use Mystic for my 650D raw videos and never had any problem. What kind kind of problems did you have with Mystic and 650d raw?

http://www.magiclantern.fm/forum/index.php?topic=14092.0

[Edgar Matos]

There is still some pink pigmentation after applying chroma smoothing. You can almost avoid it if the dead pixel zone is very bright... at least that is my case. And of course, the dead pixel zone is too big to begin with.

At 720 is not easy to see it. But is there. Especially when there is camera moment. I'll upload some pictures later.

[Edgar Matos]

This is what I found. I Mentioned earlier pink pigmentation, as you can see in the pictures below.

Photo #1
https://www.dropbox.com/sc/hrshgofp1xfnixk/AABjd2lR9VdyFZWw71u7J5yXa
https://www.dropbox.com/sc/qezvdcsmsu23vvs/AACY1RfqJ6h2rqJaDxI6SOw-a

I tried to reproduce the same problem but I didn't find any problem.

Photo#2
https://www.dropbox.com/sc/bq1dgja2dp4iago/AADTVL3rquLdQ2TM2sg9q1qOa

Yet again, I was looking other pictures, when I found an anomaly similar to the black sun of the black magic production camera back then when the first firmware was released.

Photo#3
https://www.dropbox.com/sc/14gasor18uac4c8/AAClTzEX0J-Q6T3EAVYWFkCGa
https://www.dropbox.com/sc/xa6llmp10mtvf0r/AABG1M_u4JqdZwzWbLQ3tfyJa

The Raw files were extracted using MYSTIC. Do you guys have any similar problems or any advise?

[Mehmet Kozal]

anomaly similar to the black sun of the black magic production camera back then

Thanks @Edgar.
Actually I remember getting the exact behavior whenever there are specular highlights in the scene. I don't have any video frames to support this right now but I can confirm that I got this before.

Will try to film some scenes this weekend and will let specular highlights and maybe overexpose the shot a little bit to see if the problem still exists.