Sharpness Question

Really? id expect it to be higher considering the only light source is indoor lamps.
The light amount is nowhere near what it would be outdoors during the day. And denoise have been praised outdoors ๐Ÿ™

Even in the 60 fps mode it was way worse with denoise enabled.

Guessing they have never tested it with 1.2 then.

Anyway, as i cant see any difference with or without denoise 1024 ill just leave that in the autoexec.
 
Xermalk said:
So i did a bunch of tests with the modded 1.2 z22 firmware with default and denoise 4096. Recording at all framerates&high, and using mpc to grab uncompressed png images.
In every single one its much sharper without denoise then with it activated? and the denoise screengrabs end up being much smaller (3,0 instead of 4.2MB on 1080p24).

1080p24 is sharper then 1080p60. But i expected as much considering I'm indoors and the sun has gone down. Though this means the lighting conditions were exactly the same during the tests.

Pictures on my gdrive.
https://drive.google.com/open?id=0B9VXikUtJ95FSDVRZ0JwS1FGLVE

This is the firmware file im using.


And the autoexec

rm \DCIM\100MEDIA\*thm.mp4
#denoise 4096
t ia2 -adj tidx -1 4096 -1
Click to expand...
did you really applied 4096 denoise ? freak....

4096 it makes worse then default that camera applies, well on low iso is auto disabled and when its needed its applied like auto 4096, and you forced with script to apply it,
if you want sharper images go around 1024-1500 or even lower, or just 0.

on low iso no need denoise, on high iso you can put it in how much you want to be blurred so the noise isnt visable...more denoise = less noise, more blur

DENOISE = BLUR
DENOISE = 0 = noblur, visable iso noise if there is any if camera goes to high ISO(400+)
 
Xermalk said:
Really? id expect it to be higher considering the only light source is indoor lamps.
The light amount is nowhere near what it would be outdoors during the day. And denoise have been praised outdoors ๐Ÿ™

Even in the 60 fps mode it was way worse with denoise enabled.

Guessing they have never tested it with 1.2 then.

Anyway, as i cant see any difference with or without denoise 1024 ill just leave that in the autoexec.
Click to expand...
Look,
with script you just lower the denoise,
if there is no script on sd card, then denoise is activated with higher value.
and on low ISO like 100, there is denoise deactivated or very low like 256...
 
Last edited:
I used 4096 because that was what was mentioned in a rcgroups thread. I had no idea that that was the maximum value the standard firmware used.

With 1024 there was no/ perhaps slight degradation from not using it. In indoor led lighting with pitch dark outside.

So this is a bogus "fix" for the Yi not being nearly as sharp as i Gopro 3 then ? Guess ill eventually have to look into alternative lenses for it, if i want better sharpness (mine is focused over hdmi out).
 
Xermalk said:
(mine is focused over hdmi out).
Click to expand...
I noticed that HDMI delivers a full pin sharp HD picture only if the camera is on movie mode. On snapshot mode, and with the 16x9 still picture setting, the picture delivered by HDMI looks like upscaled standard PAL.
 
I had mine set to 1080p24 fps video mode. For maximum sharpness/resolution. And focused on a fresnel pattern at ~2.5m desitance.
 
No clue, never checked.
This is a 16MP 4:3 uncompressed photo.

fdhZuO.jpg
 
PistolPex said:
Well that quality kinda looks like my footage, IMO this is not as sharp as many other samples I saw... ๐Ÿ™
Click to expand...

Not sure if it can be a lens problem or not hummmm :/
 
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