..but since the vertical resolution is going to be resized anyway in 1x3 mode there should be no quality loss when using dual iso.
Checked out your samples, removed the aliasing in the 3x3 samples and rescaled the 1x3 samples and must conclude you're right, can't see much more detail, probably none, in the 1x3 samples.
I can confirm There is no quality loss when using Dual ISO in 1x3! (@Levas No much details in normal 1x3 but the details has been restored when using Dual ISO)
1x3 Binning made for Dual ISO! no price to pay when using dual iso in video now!
Price to pay
- Half resolution in highlights and shadows
- Aliasing and moire - of course, in highlights and shadows
- You can no longer check critical focus when zooming in
Magic Lantern Cinema Camera:
Link:
Original file in Google Drive:
DownloadDetails:
https://www.magiclantern.fm/forum/index.php?topic=22818.msg206134#msg206134By the way, this 1x3 method could, besides dual iso, also be good for low light shooting.
The final image is rescaled to 1/3 of it's original size, that should give about 1.33 stops of noise reduction. So shooting iso 3200 with iso 1250 results...
You are right there is improvement in the shadows:
ISO 100 3x3: (Pushed 4 stops)

ISO 100 1x3: (Pushed 4 stops)

Dual ISO 100/800 3x3: (Pushed 5 stops)

Dual ISO 100/800 1x3: (Pushed 5 stops)

@IDA_ML
..Bilal, could you please answer the following question for me: Would it be possible to achieve the following goal on the Rebel cameras (700D, 100D, EOS-M and maybe other Rebel models too)?
Resolution: 2560x1440 (this resolution would provide very good quality on Vimeo and Youtube)
Bit depth: 10-bit with lossless compression
Frame rate: 24 ps
Recording: Continuous or at least 10-12 sec. recording time
Preview: WySiWyG, even if it is slow
And what about D4 cameras (7D, 5D2)? If the answer to that question is YES, then this would be a real break through for these cameras and a revolutionary achievement for the ML community !!!
We already have more than 2560x1440! we can get up to
2700x1500 @ 23.976 fps without any corrupted frames! This thing has been done by using the
new method of crop_rec only for 700D for now but I think it's very soon for all D5 cams!
10 Bit-lossless is already working also when using Analog gain. Maybe @Danne have a build for 100D. (I noticed a vertical stripes appears in 700D when using Analog gain and maybe it's fixable but for now you can fix it in MLVApp).
Recording times: we have to figure out how to get full SD write speed, 10-bit lossless isn't enough for continuous recording in this resolutions! and maybe we are not sure if we can see effective 80MB/s write speed in small cameras.
Preview is working in 700D. and maybe in all other cameras if you have a problem you can ask the developers

.
Now 5D2 has reached two big things 10/12 bit depths working and 3K (2880x1080) RAW video recording. This is very good sign for D4 Cameras !